Annotation of rpl/ChangeLog, revision 1.213

1.209     bertrand    1: * Mon Jan 5 2015 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.20 (RPL/2)
1.213   ! bertrand    2: - zlib is upgraded;
1.212     bertrand    3: - sqlite and openssl are upgraded;
1.211     bertrand    4: - new buffercached  allocator is added;
1.210     bertrand    5: - giac is upgraded to 1.1.4;
1.209     bertrand    6: - Gnuplot is upgraded to 5.0.0.
1.207     bertrand    7: * Mon Jan 5 2015 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.19 (RPL/2)
                      8: - EQV is added in algebraic input and output subroutines;
                      9: - ncurses and sqlite have been upgraded with last patches;
1.206     bertrand   10: - openssl is upgraded to 1.0.1j and Gnuplot is upgraded to 4.6.6;
                     11: - expression simplification subsystem is rewritten from scratch. Now, it does
                     12: not do anything. Only fonctions to convert algebraic expression to and from
                     13: q-tree have been written and successfuly tested;
1.205     bertrand   14: - EQV intrinsic is added;
1.208     bertrand   15: - major bug is fixed in XOR intrinsic (erroneous truth table with integer
                     16: or real arguments);
1.204     bertrand   17: - parser is upgraded. Now, it is possible to write <[[[3]]]> or {{5}} (without
                     18: space) and [[ 3 4 ]]4 catches error;
1.203     bertrand   19: - major regression is fixed in recherche_type() (complex type);
1.202     bertrand   20: - shebang paths are modified to be computed by configure script (NetBSD issue);
1.201     bertrand   21: - ncurses is upgraded.
1.199     bertrand   22: * Thu Jul 17 2014 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.18 (RPL/2)
1.198     bertrand   23: - major regression is fixed in SysV semaphore emulation subsystem (segfault);
1.197     bertrand   24: - gmp is upgraded;
1.196     bertrand   25: - ncurses is upgraded;
                     26: - empilement_pile_last() is modified to delete argument from current stack if
                     27: it cannot save all arguments (to few arguments error _before_ first call
                     28: to depilement() by parent routine).
1.194     bertrand   29: * Wed Apr 23 2014 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.17 (RPL/2)
                     30: - semaphores have been removed from s_signaux as POSIX doesn't assure that
                     31: semaphores are synchronized between address spaces without msync();
                     32: - sqlite is upgraded;
                     33: - OpenSSL is upgraded;
1.193     bertrand   34: - lapack is upgraded to 3.5.0;
1.192     bertrand   35: - use of uninitialized variables is avoided in FORALL;
                     36: - giac is upgraded;
                     37: - units is upgraded;
                     38: - OpenSSL, sqlite and gnuplot are upgraded;
1.191     bertrand   39: - major bug is fixed in both FOR and FORALL (segmentation fault if both
                     40: instructions are not followed by a name).
1.190     bertrand   41: * Fri Nov 28 2013 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.16 (RPL/2)
1.189     bertrand   42: - OpenMotif is patched to correctly detect fontconfig;
1.188     bertrand   43: - sqlite and ncurses are patched;
                     44: - rpl.inc is fixed;
                     45: - rpl() now sends arguments to RPL/2 subroutine;
1.187     bertrand   46: - rpl() prototype is fixed (rpl_home is an unsigned char * not an unsigned char
                     47: **);
1.186     bertrand   48: - GSL is upgraded;
                     49: - major bug is fixed in READ intrinsic (Unix device).
1.185     bertrand   50: * Fri Sep 6 2013 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.15 (RPL/2)
                     51: - RGDL and RGDR (ragged left and ragged right) are added;
1.184     bertrand   52: - major bug is fixed in initialization (segfault). It only occurs when RPL/2
1.183     bertrand   53: is built with a forced localization;
1.182     bertrand   54: - EXIT regression is fixed.
1.180     bertrand   55: * Fri Jun 21 2013 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.14 (RPL/2)
1.178     bertrand   56: - number of pipes between process is reduced;
1.177     bertrand   57: - gnuplot is upgraded;
1.176     bertrand   58: - libiconv is patched to be built with recent glibc (C11);
1.175     bertrand   59: - some race conditions have been fixed;
1.174     bertrand   60: - sqlite is upgraded;
1.173     bertrand   61: - Major regression is fixed in IFERR/END structure;
1.172     bertrand   62: - Major regression is fixed in evaluation(). Local variables were exported
                     63: to called definitions.
                     64: * Mon Apr 1 2013 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.13 (RPL/2)
1.169     bertrand   65: - integer overflows have been fixed (NEG, ABS, minus);
1.168     bertrand   66: - global variables can now be recalled from ATEXIT procedure;
1.167     bertrand   67: - ATEXIT registered procedure is now executed even if program is stopped by
                     68: SIGINT;
1.165     bertrand   69: - minor bug is fixed in TOKENIZE intrinsic instruction. TOKENIZE did not work on
                     70: a copy of input string;
1.164     bertrand   71: - major bug (segfault) is fixed in liste_variables(). It only occurs
                     72: when this function is called with shared variables;
1.163     bertrand   73: - all internal data are now stored in 64 bits wide integers (even is 32 bits
                     74: ABI is selected);
1.162     bertrand   75: - major bug is fixed in recherche_instruction_suivante(). In some
                     76: circumstances, this function can return a spurious error;
1.161     bertrand   77: - new NATIVE*(*) data format is added. By default, native*(*) is used
                     78: to write data without precision loss. It can also be used to write
                     79: complex objects like expressions, lists or tables;
1.160     bertrand   80: - major bug is fixed in formateur(). When INT64_MIN was pushed into stack,
                     81: internal value was good but RPL/2 was not able to correctly display
                     82: this value. This bug comes from ABS as ABS(INT64_MIN) cannot be represented
1.171     bertrand   83: in integer. All abs(), fabs() and labs() present in source code have been
                     84: checked to avoid this kind of bug;
1.159     bertrand   85: - unformatted sockets are now usable as unformatted files;
1.158     bertrand   86: - BACKSPACE now runs on unformatted file;
                     87: - major bug is fixed in BACKSPACE that didn't check if '"' characters were
                     88: escaped;
1.157     bertrand   89: - CHARACTER*(n) format now counts escaped characters;
1.155     bertrand   90: - transliteration is avoid in rpl-core file generation to authorize core
                     91: creation even if a transliteration error is caught;
                     92: - major bug is fixed in evaluation(). System stack was not correctly
                     93: destacked when execution error occurs;
1.154     bertrand   94: - major bug is fixed in READ (socket interface);
                     95: - minor bug is fixed in analyse_flux().
1.169     bertrand   96: * Wed Feb 27 2013 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.12 (RPL/2)
1.153     bertrand   97: - bug is fixed in recherche_type(). { "\"" } was not evaluated as expected
                     98: as inner quote was not escaped;
1.152     bertrand   99: - CIPHER new intrinsic is added to perform key generation, decryption and
                    100: encryption;
1.151     bertrand  101: - CBC-CMAC digest is added;
1.150     bertrand  102: - HMAC digest is added;
1.149     bertrand  103: - DIGEST intrinsic is added;
1.148     bertrand  104: - signal management is fixed to be usable on NetBSD;
1.147     bertrand  105: - RPL/CAS autoconfiguration is upgraded;
                    106: - sqlite, openssl, giac, gmp ave been upgraded;
1.146     bertrand  107: - SQLITE support is added in SQLQUERY, SQLCONNECT and SQLDISCONNECT.
1.145     bertrand  108: * Tue Dec 18 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.11 (RPL/2)
                    109: - shared variables are now stored in a tree;
                    110: - lapack is upgraded to 3.4.2;
1.142     bertrand  111: - only giac/src is built in rplcas (giac/Makefile.am is modified);
                    112: - gnuplot is upgraded to 4.6.1;
1.141     bertrand  113: - giac, units and ncurses are upgraded;
1.140     bertrand  114: - interprocess capabilities are removed when RPL/2 cannot run its initialization
                    115: routine to keep operating system as clean as possible;
1.139     bertrand  116: - sem_wait() has to catch EINTR in thread_surveillance_signaux();
1.138     bertrand  117: - signal management is rewritten to avoid a strange bug on NetBSD. On NetBSD,
                    118: a signal handler can be called within a special thread and not in the
                    119: calling thread;
1.144     bertrand  120: - static variables are now written in a variables tree;
1.136     bertrand  121: - major bug is fixed in STO intrinsic. STO returns an error when it has
                    122: to create a global variable if intrinsic none (default) is set.
1.134     bertrand  123: * Mon Oct 1 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.10 (RPL/2)
1.133     bertrand  124: - FORALL intrinsic is added;
1.132     bertrand  125: - major bug (deadlock) is fixed in CYCLE. Only occurs when CYCLE is called to
1.133     bertrand  126: interrupt a loop from a subroutine within a compiled programm;
1.131     bertrand  127: - workaround to avoid strange bug on slow network is written in READ
                    128: intrinsic;
                    129: - CRITICAL/END structure is added. When program enters in a critical
                    130: section, all other threads of the same process sleep until program leaves
                    131: critical section.
1.129     bertrand  132: * Wed Aug 22 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.9 (RPL/2)
                    133: - giac is upgraded to 0.9.8;
                    134: - ncurses is patched with last patches;
1.128     bertrand  135: - Sqlite is upgraded to 3.7.13;
                    136: - Units is upgraded to 1.89e;
                    137: - Lapack is upgraded to 3.4.1;
1.127     bertrand  138: - LENGTH*(...) format is fixed;
1.126     bertrand  139: - some patches have been added to build RPL/2 on NetBSD;
1.124     bertrand  140: - escaped characters are fixed in READ and WRITE operations;
1.123     bertrand  141: - major bug is fixed in READ intrinsic (on socket). End of file condition
                    142: was randomly caught on slow network;
1.122     bertrand  143: - stdin can now handle espaced characters strings in SYSEVAL;
1.121     bertrand  144: - --with-gcc-version is added to configure script to force gcc version as
                    145: gfortran 4.7 is broken and crashes with segmentation fault.
1.119     bertrand  146: * Mon May 21 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.8 (RPL/2)
                    147: - POLL now accepts more than one descriptor and returns informations
1.118     bertrand  148: about pollable descriptors;
                    149: - SMPHRTRYDECR now takes timeout value instead of returning when semaphore
                    150: cannot by decremented;
1.117     bertrand  151: - signal handlers are fixed to avoid spurious and very rare deadlocks;
1.116     bertrand  152: - pari is upgraded;
1.115     bertrand  153: - force CFLAGS for tools/file (-O2 -g) to avoid mmap() error;
1.114     bertrand  154: - giac, gmp and mpfr have been upgraded.
1.113     bertrand  155: * Fri Apr 13 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.7 (RPL/2)
1.112     bertrand  156: - double quote is escaped in INPUT and PROMPT intrinsic functions;
1.111     bertrand  157: - error is returned (instead of warning) when unavailable intrinsic function
                    158: is called;
1.110     bertrand  159: - lot of minor bugs have been fixed;
                    160: - ncurses and file are patched;
                    161: - RPL/2 can now be cross compiled (until .deb archive generation);
1.109     bertrand  162: - all table, vector and matrix dimensions are now treated as unsigned long;
1.108     bertrand  163: - recherche_type() function is modified to use cached memory;
                    164: - gnuplot is upgraded to 4.6.0.
1.107     bertrand  165: * Wed Feb 29 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.6 (RPL/2)
                    166: - serial line support is added to OPEN (STTY options);
1.106     bertrand  167: - multiline inputs are allowed:
                    168: schroedinger:[~/cvs/build/src] > rpl -is
                    169: +++RPL/2 (R) version 4.1.6 (Monday 01/30/12, 10:20:38 CET)
                    170: +++Copyright (C) 1989 ŗ 2011, 2012 BERTRAND JoŽl
                    171: 
                    172: +++Ce logiciel est un logiciel libre sans aucune garantie de fonctionnement.
                    173: +++Pour plus de dťtails, utilisez la commande 'warranty'.
                    174: 
                    175: RPL/2> [[ 1 2 3 ]
                    176: + 001> [ 4 5 6 ]
                    177: + 002> [ 7 8 9 ]]
                    178: 
                    179: 1: [[ 1 2 3 ]
                    180:     [ 4 5 6 ]
                    181:     [ 7 8 9 ]]
                    182: RPL/2> [[ 1 23 ]
                    183: + 001> [ 4 5 6 ]]
                    184: +++Erreur : Erreur de syntaxe [19267]
                    185: 
                    186: 1: [[ 1 2 3 ]
                    187:     [ 4 5 6 ]
                    188:     [ 7 8 9 ]]
                    189: RPL/2> [ 1 2 3
                    190: + 001> annulation
                    191: RPL/2> abort
                    192: 
                    193: 'annulation' is done by pressing CTRL+g, and abort by CTRL+d on empty line.
1.104     bertrand  194: * Tue Jan 17 2012 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.5 (RPL/2)
                    195: - ncurses, sqlite and openssl have been upgraded;
1.103     bertrand  196: - major bug is fixed in ** (integer integer **) when first argument is equal to
                    197: -1;
1.102     bertrand  198: - major bug is fixed in signal management. With new signal management, thread or
                    199: process were not signalized anymore by POSIX signals. If a thread or a process
                    200: was sleeping, it was not interrupted;
1.101     bertrand  201: - minor bug is fixed in OPEN intrinsic. Now, when a socket is open, its default
                    202: adress is set to 0.0.0.0;
1.105     bertrand  203: - new rule is added to main makefile (make debian) to build deb package;
1.100     bertrand  204: - new benchmark (Xeon W3520 @ 2.67GHz) :
                    205: schroedinger:[~/cvs/bench] > ./bench.rpl 
                    206: +++RPL/2 (R) version 4.1.5 (Friday 12/02/11, 12:18:23 CET)
                    207: +++Copyright (C) 1989 ŗ 2010, 2011 BERTRAND JoŽl
                    208: Number of scalar operations per second and per core : 3809121.83444626
                    209: schroedinger:[~/cvs/bench] > 
1.99      bertrand  210: - recherche_type() did not convert huge integer in real. Now,
                    211: 18446744072742037448 is converted into real as value cannot be stored in
                    212: RPL/2 integer type;
                    213: - WFSOCK is modified to handle unconnected sockets;
1.98      bertrand  214: - REGEX is added;
1.97      bertrand  215: - RESTART is added (execvp() on main RPL/2 process);
1.95      bertrand  216: - copie_objet() now returns same MTX (struct_mutex) even if caller wait for
                    217: a real copy. Now, struct_mutex contains locks owner. On Linux or Solaris (for
                    218: example), it is possible to lock mutex from a thread and unlock the same mutex
                    219: from another thread. On NetBSD, system crashes.
1.94      bertrand  220: * Mon Nov 21 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.4 (RPL/2)
                    221: - rplcas/@GIAC@/src/config.h is removed to avoid compilation bug. config.h
                    222: written by configure script was overloaded by src/config.h;
1.95      bertrand  223: - lot of compilation warnings have been fixed;
1.94      bertrand  224: - lapack and blas have been upgraded;
1.93      bertrand  225: - ncurses, sqlite and giac have been upgraded;
                    226: - LCASE, UCASE, POS and SUB now handle escape characters;
1.91      bertrand  227: - major bug is fixed in INT (numerical integration was unusable as type
                    228: checking condition was always false);
1.90      bertrand  229: - SIZE, CHR and NUM can handle strings with escape characters;
1.89      bertrand  230: - lot of patches for Android and OS/2;
                    231: - configure.ac is improved to remove operating systems special cases.
1.88      bertrand  232: - major bug is fixed in DRWS (SDAT was not used...);
                    233: - lists, and integer, real and complex numbers can now be written in
                    234: unformatted files;
                    235: - rplawk makefile is fixed to avoid build process bug. Warning, with these
                    236: modifications, sources tree has to be writable.
1.86      bertrand  237: * Wed Sep 21 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.3 (RPL/2)
1.85      bertrand  238: - Linux port, MacOS X port and xBSD ports are tested and fully fonctionnal;
1.84      bertrand  239: - libsigsegv is added;
                    240: - OpenMotif is added;
                    241: - all internal signal handlers are rewritten to avoid POSIX signal usage
                    242: and to be async signal safe;
1.83      bertrand  243: - SIGSEGV signal handler is rewritten;
1.80      bertrand  244: - SREV intrinsic is added.
1.79      bertrand  245: * Tue Aug 9 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.2 (RPL/2)
1.81      bertrand  246: - I have fixed a lot of bugs in gpp preprocessor (and sent gpp 3.0 to official
1.78      bertrand  247: gpp developer). Now, macros like
                    248: 
                    249:    #define foo foo bar
                    250: 
                    251: is evaluated without recursion. gpp 2.24 crashed on stack overflow.
1.77      bertrand  252: - LIMIT is added;
1.76      bertrand  253: - Now, undefined values like 'infinity/infinity' are computed. Result is
                    254: undef constant;
1.75      bertrand  255: - infinity constant is added.
1.73      bertrand  256: * Sun Jul 24 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.1 (RPL/2)
1.74      bertrand  257: - VERSION now returns OS type, architecture and ABI;
1.73      bertrand  258: - configure script is updated. New flags :
                    259:     --with-32bits-abi
1.88      bertrand  260:     --with-64bits-abi
                    261:     --with-rplcas
1.73      bertrand  262: Please not that RPL/CAS is not built by default;
1.72      bertrand  263: - Lapack is upgraded to 3.3.1.
1.71      bertrand  264: * Mon Jun 27 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0 (RPL/2)
                    265: - New stable release.
1.70      bertrand  266: * Fri Jun 22 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0.prerelease.4 (RPL/2)
1.71      bertrand  267: - some minor changes have been done in instruction_int() to accept new argument
                    268: types;
                    269: - interface_cas.cpp now catchs exceptions returned by giac.
1.70      bertrand  270: * Fri Jun 24 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0.prerelease.3 (RPL/2)
                    271: - INT intrinsic now uses RPLCAS to compute symbolic integration;
1.69      bertrand  272: - minor bug is fixed in INTRINSIC function. Now, this function gives same
                    273: result with ou without -p switch.
1.68      bertrand  274: * Wed Jun 22 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0.prerelease.2 (RPL/2)
1.67      bertrand  275: - memory caching is added to new variable tree.
1.66      bertrand  276: * Tue Jun 21 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0.prerelease.1 (RPL/2)
                    277: - SPAWN is now usable with new variable management;
1.65      bertrand  278: - MEM is rewritten;
                    279: - PRUSR is rewritten;
                    280: - merge 4_0 branch into HEAD;
                    281: - CLUSR is rewritten;
                    282: - -p flag is now usable;
                    283: - New benchmark:
                    284: cauchy:[~/rpl/bench] > ./bench.rpl 
                    285: +++RPL/2 (R) version 4.1.0.prerelease.1 (lundi 20/06/2011, 23:00:45 CEST)
                    286: +++Copyright (C) 1989 ŗ 2010, 2011 BERTRAND JoŽl
                    287: Number of scalar operations per second and per core : 2625369.22710792
1.64      bertrand  288: * Mon Jun 20 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.1.0.prerelease.0 (RPL/2)
                    289: - New variable management is written. Please note that -p flag does not work
                    290: and all multithread/multitask capabilities have been disabled until this
                    291: new subsystem shall be validated.
                    292: * Thu May 09 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.23 (RPL/2)
                    293: - major bug is fixed in STD format (1E7 sq prints 1);
                    294: - major bug is fixed in READ intrinsic (socket). This bug was introduced
                    295: by a new feature in glibc.
                    296: * Thu Apr 14 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.22 (RPL/2)
                    297: - by default, RPL/2 uses "NONE" IMPLICIT when it's started in batch mode and
                    298: "ALL" IMPLICIT when it runs in interactive mode;
                    299: - when "NONE" IMPLICIT is set, STO intrinsic raises an error when it is used
                    300: to create or modify a global variable. Now, with "NONE" IMPLICIT, you have
                    301: to use SAVE to manipulate global variables;
                    302: - replace erroneous TAB by TBL in evaluation() and formateur_fichier()
                    303: subroutines;
                    304: - fix major memory access violation in evaluation subroutine. Only occurs
                    305: when 'X(i,j)' is evaluated on a matrix and when (i,j) points out of bounds;
                    306: - fix major bug in evaluation subroutine. 'X(i)' returns execution error
                    307: when X was a vector or a table.
1.63      bertrand  308: * Sun Apr 04 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.21 (RPL/2)
                    309: - Gnuplot is upgraded;
1.62      bertrand  310: - flag 34 is now used to enable or disable control character evaluation;
                    311: - major bug is fixed in P->R intrinsic function when argument type is
                    312: complex and degree mode is set;
                    313: - L->T and T->L are added;
1.63      bertrand  314: - OLD filetype is fixed;
1.61      bertrand  315: - FLOW socket support is added;
                    316: - FLOW sequential files are added;
                    317: - new escape sequence is added to handle flow files (\x + hexadecimal code).
                    318: Known escape sequences are \", \b, \n, \t, \x?? and \\.
1.60      bertrand  319: * Sun Mar 06 2011 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.20 (RPL/2)
                    320: - Ncurses is upgraded to 5.8;
                    321: - ALARM is fixed by filling isdst field;
                    322: - catch ECONNRESET in write intrinsic to return an execution error instead of
                    323: system one;
                    324: - fix a typo in HELP intrinsic;
                    325: - Openssl is upgraded to 1.0.0d, sqlite to 3.7.5 and readline to 6.2;
1.57      bertrand  326: - Lapack is upgraded to 3.3.0;
1.58      bertrand  327: - libmtmalloc is now default Solaris allocator;
1.56      bertrand  328: - ncurses is upgraded;
1.60      bertrand  329: - regression introduced by 4.0.19 is fixed in signal management.
1.59      bertrand  330: Interruption1() could be called from itself and raises bus error (on sparc) or
1.55      bertrand  331: segmentation fault;
                    332: - sqlite is upgraded to 3.7.4;
1.54      bertrand  333: - OpenSSL is upgraded to 1.0.0c;
                    334: - syntax error is correctly checked ( (2+,0) does not crash RPL/2 anymore);
                    335: - characters are tested in recherche_type() to avoid names like '12+';
1.53      bertrand  336: - gnuplot is upgraded to 4.4.2 due to major bugs.
1.52      bertrand  337: * Thu Sep 23 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.19 (RPL/2)
                    338: - due to a very strange bug I've only seen on Solaris, ptmalloc3 is removed.
                    339: Solaris libresolv randomly uses ptmalloc3 and system allocator and makes heap
                    340: corruption. As internal memory management have been improved, a best fit
                    341: allocator like ptmalloc3 is not required anymore;
1.50      bertrand  342: - gnuplot is upgraded to 4.4.1;
                    343: - deadlock is fixed in signal handlers: same mutex was used in standard
                    344: subroutines (without protected sections by sigprocmask() or pthread_sigmask())
                    345: and signal handlers. A new signal handler specific mutex is added;
                    346: - minor bug is fixed in evaluation() subroutine. In { X 0 PI }, PI is a function
                    347: that has to be evaluated by ->NUM;
1.49      bertrand  348: - rplfile build process is modify to be sure that rplfile is not modified
                    349: after rpl build stage (to be sure that rplfile checksum is not modified after
                    350: rpl compilation);
1.51      bertrand  351: - AWK is replaced by rplawk. rplawk is original awk written by Brian Kernighan,
                    352: modified to remove yacc code and renamed;
1.47      bertrand  353: - some workarounds have been written to not use buggy klibc SystemV IPCS.
                    354: ABORT now works on eComStation;
                    355: - sqlite is upgraded to 3.7.2;
                    356: - bug is fixed in software interrupts. When both process have different PID,
                    357: parent process was not interrupted if it is not group master process. To fix
                    358: this bug, SIGINJECT signal is not sent by child process but by control thread
                    359: in parent process;
1.46      bertrand  360: - minor bug is fixed in data injection (POKE) that does not work as expected
                    361: when child process is protected by NRPROC.
1.44      bertrand  362: * Thu Aug 26 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.18 (RPL/2)
1.43      bertrand  363: - --enable-sysv-sems is added to configure script to use SystemV semaphores
                    364: functions instead of POSIX functions. This function is disabled or forced on
                    365: systems that does not provide correct POSIX or SysV semaphores subsystem;
                    366: - a dirty but not quick patch is written to workaround broken siginfo
                    367: structures. This patch has been successfully tested. It uses a segment of
1.50      bertrand  368: shared memory (Posix or SysV) and some semaphores (Posix or SysV) by process
1.43      bertrand  369: (Unix PID);
1.41      bertrand  370: - some OpenBSD's hacks are added;
                    371: - broken siginfo->si_pid field is now checked by configure script;
1.40      bertrand  372: - SWI now sends SIGCONT to interrupted process to start interrupt without delay;
                    373: - random generator is cloned by SPAWN;
                    374: - in transliteration subroutine : '\r' is added after all '\n' in OS/2 port;
1.39      bertrand  375: - getaddrinfo is hardcoded when host system does not provide getaddrinfo
1.40      bertrand  376: or freeaddrinfo;
1.39      bertrand  377: - RPL/2 can now use SystemV semaphores when POSIX semaphores are unavailable;
                    378: - major bug is fixed in CHR intrinsic when obtained character is not printable;
                    379: - Lapack is upgraded to 3.2.2;
1.37      bertrand  380: - OS/2 (eComStation 2.0 with EMX 0.9d) support is added;
1.36      bertrand  381: - TOKENIZE is now able to convert escape sequences;
                    382: - ATPOKE and CLRATPOKE new intrinsics are added;
                    383: - --enable-full-static configure flag is added. With this flag, mysql and
                    384: postgresql libraries are statically linked in rpl executable;
                    385: - units Makefile is modified to avoid readline and ncurses usages;
1.37      bertrand  386: - sqlite is upgraded to 3.7.0.1;
1.36      bertrand  387: - units is upgraded to 1.88;
                    388: - another major bug is fixed in the same variable creation subroutine.
                    389: Level 0 and 1 variables adresses were swapped when a global variable masked
                    390: a name of RPL/2 routine;
1.35      bertrand  391: - major bug is fixed in global variable creation subroutine. When a global
                    392: variable was created and when a local variable existed with the same name,
                    393: computed address of global variable was wrong;
                    394: - src/Makefile.am is modified to avoid a bug on several systems. libptmalloc3
                    395: is forced in front of all libraries.
1.34      bertrand  396: * Tue Jul 13 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.17 (RPL/2)
                    397: - BACKTRACE intrinsic is added;
                    398: - major bug is fixed in SELECT/DEFAULT/END conditional structure. Only occurs
                    399: when this structure is included in IFERR/THEN/END structure and when an error is
                    400: caught;
                    401: - major bug is fixed in analyse() subroutine. When evaluation() returned error
                    402: in a compiled program, analyse() caught this error twice and randomly aborted
                    403: with a segmentation error;
                    404: - TRIM and TOKENIZE replace both '\n' and '\t' by regular spaces;
                    405: - ATEXIT subroutine begins with an implicit CSTOP to avoid multiple stop
                    406: signals;
                    407: - memory leak is fixed in ROW+. It only occurs when a row is added to an empty
                    408: matrix.
1.33      bertrand  409: * Thu Jun 24 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.16 (RPL/2)
                    410: - minor bug is fixed in evaluation() subroutine. With this patch, same program
                    411: returns same result with or without -p flag;
                    412: - ncurses 5.7 is upgraded to 20100619;
                    413: - openssl is upgraded to 1.0.0a;
1.32      bertrand  414: - interrupt stacks are now FIFO instead of LIFO;
                    415: - debug memory allocation subroutines are improved to run in multithreaded
                    416: programs;
                    417: - some memory leaks are fixed in process management (SPAWN and DETACH);
                    418: - version verification is added to shared objects;
                    419: - -D_GNU_SOURCE is added to ptmalloc3 makefile to avoid a major bug on 64 bits
                    420: linux (false mremap() prototype);
                    421: - major bug is fixed in rpliconv. getc() returns an int, not a unsigned char.
1.30      bertrand  422: * Sun May 23 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.15 (RPL/2)
1.29      bertrand  423: - all '-' are replaced by '_' in random generator list;
1.28      bertrand  424: - minor memory leak is fixed in OPEN intrinsic (socket);
                    425: - major bug is fixed in IFERR structure. Only occurs in compiled program;
                    426: - major bug is fixed in copie_objet() and liberation(). Only concerns
                    427: format in FCH (file descriptor) and SCK (socket descriptor);
                    428: - debug routines are improved;
                    429: - PROCID is added;
                    430: - MEMLOCK and MEMUNLOCK are added. MEMLOCK forces a process to remain in memory
                    431: and to not use swap;
1.26      bertrand  432: - major bug is fixed in sql support. SQL connections were closed in all chield
                    433: process;
                    434: - standard allocator (malloc()/free()) is replaced by ptmalloc3 due to some bugs
                    435: discovered in Solaris thread safe allocators (libmalloc and libumem) that
                    436: are first fit class allocators. Solaris libmtmalloc works better and is
                    437: a best fit class allocator but its performance is poor than ptmalloc3
                    438: performance;
1.24      bertrand  439: - major bug is fixed in ROW+ intrinsic (new row was not added where it
                    440: should);
                    441: - minor bugs are fixed in interruptions.c (semaphores values when error is
                    442: caught);
                    443: - major bug is fixed in STOP intrinsic. STOP was unable to stop any process
                    444: created by SPAWN;
                    445: - SIGFABORT is added. When process receives SIGFSTOP, it tries to execute
                    446: ATEXIT. If it receives SIGFABORT, it does not;
1.23      bertrand  447: - ONEXIT is renamed in ATEXIT;
                    448: - ONEXIT new intrinsic is added.
1.20      bertrand  449: * Wed Apr 21 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.14 (RPL/2)
                    450: - major bug is fixed in static and shared variables initialization subroutine.
                    451: This bug only occurs when RPL/2 tries to create a shared or static variable
                    452: from an expression;
                    453: - major bug is fixed in copie_etat_processus(). A field that contains
                    454: information about shared variable was not copied to new processus structure;
1.19      bertrand  455: - some little memory leaks are fixed in evaluation(), recherche_type() and
                    456: sequenceur(). They only occured when syntax error were caught;
                    457: - IMPLICIT causes execution error instead system error;
                    458: - Hurd support is improved but currently broken because Hurd does not support
                    459: SIG_INFO. Work in progress;
                    460: - OpenBSD specific support is removed from sources;
                    461: - support for Mac OS X and Windows/Cygwin is added.
1.17      bertrand  462: * Wed Apr 07 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.13 (RPL/2)
                    463: - implicit names can now be disabled by new IMPLICIT intrinsic:
                    464: cauchy:[~/cvs/test] > cat implicit.rpl
                    465: #!/usr/local/bin/rpl -sp
                    466: TEST
                    467: <<
                    468:     "none" implicit
                    469: 
                    470:     1 -> Z
                    471:     <<
                    472:         Z disp
                    473:         'Z' disp
                    474:     >>
                    475: 
                    476:     'Z' disp
                    477:     Z disp // Undefined
                    478: >>
                    479: 
                    480: cauchy:[~/cvs/test] > LANG=C ./implicit.rpl
                    481: +++RPL/2 (R) version 4.0.13 (Wednesday 04/07/10, 13:57:44 CEST)
                    482: +++Copyright (C) 1989 to 2009, 2010 BERTRAND Joel
                    483: 1
                    484: 'Z'
                    485: 'Z'
                    486: +++System : Invalid implicit name [6631]
                    487: cauchy:[~/cvs/test] > 
                    488: 
                    489: RPL/2 aborts because the last Z is undefined and not protected by ''.
                    490: By default, implicit is set to "ALL";
1.16      bertrand  491: - sqlite is upgraded to 3.6.23.1;
                    492: - openssl is upgraded to 1.0.0;
                    493: - major bug is fixed in RETURN intrinsic. It only occurs in evaluation
                    494: subroutine;
                    495: - table variable can now be sorted by SORT;
                    496: - some regressions between libtool 1.x and 2.x are fixed by workarouds in
                    497: Makefiles;
1.15      bertrand  498: - -a command line option analyzes program (structure and syntax) and
                    499: sends preprocessor output to standard output. This option is used by
                    500: rplc (RPL/2 compiler).
1.13      bertrand  501: * Tue Mar 09 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.12 (RPL/2)
                    502: - in formatted file, string format returned a variable length string even if
                    503: format was 'CHARACTER*(n)' (n characters string). Now, 'CHARACTER*(*)' returns
1.15      bertrand  504: a variable length string and 'CHARACTER*(n)' a fixed length string;
1.13      bertrand  505: - keyed access files support is added. Currently, only formatted files are
                    506: supported;
                    507: - direct access files support is added. Currenlty, these files can only be used
                    508: in formatted mode;
                    509: - virtual variables are now writte in UTF-8 and all special characters
                    510: in string are escaped;
1.12      bertrand  511: - all formatted files are now converted into UTF-8;
1.17      bertrand  512: - all file and unix socket names created by RPL/2 are now UTF-8 compliant;
1.12      bertrand  513: - RPL/2 tools (rpliconv, rplfile, rplpp and rplconvert) are now checked before
                    514: each execution (md5 and sha1 sums) to enhance security. If one of these tools
                    515: have been modified between RPL/2 compilation and current execution, RPL/2 aborts
                    516: on a non recoverable system error;
                    517: - openssl and sqlite3 libraries are added;
                    518: - RPL_HOME env variable is added. When RPL/2 is called from librpl, this
                    519: variable indicates RPL/2 root directory. If it is not set, root path
                    520: is given by configure script (d_exec_path);
1.11      bertrand  521: * Thu Mar 03 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.11 (RPL/2)
                    522: - configure.in and makefile.am's are modified to add Cygwin support. Interix
                    523: support is broken;
1.10      bertrand  524: - memory leak is fixed in recherche_type();
                    525: - TeX files are now written in UTF-8 even default locale differs;
                    526: - minor bug is fixed in ->STR (escaped characters);
1.9       bertrand  527: - minor bug is fixed in ->Q intrinsic. Resultat is returned as integer
                    528: fraction intead real one;
                    529: - SIGN now returns (0,0) instead (nan,nan) when complex argument is null;
1.8       bertrand  530: - Makefile.am are modified to authorize parallel builds;
1.7       bertrand  531: - minor bug is fixed in CR intrinsic. CR sends a carriage return to printer
                    532: and writes warning to standard output;
1.6       bertrand  533: * Wed Feb 10 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.10 (RPL/2)
1.5       bertrand  534: - escape codes are now converted in formateur(), not in recherche_type() to
                    535: avoid a minor bug in EDIT and VISIT intrinsics;
1.4       bertrand  536: - minor bug is fixed in formateur_reel();
1.7       bertrand  537: - file-5.03 is patched to avoid bus error on systems that require memory
1.3       bertrand  538: alignment;
1.2       bertrand  539: - minor bug is fixed in evaluation(). Error returned by RPL/C external functions
                    540: were able to be avoided by evaluation routine.
1.1       bertrand  541: * Tue Jan 26 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.9 (RPL/2)
                    542: - New benchmark on same hardware than old one :
                    543: cauchy:[~/rpl/bench] > ./bench.rpl 
                    544: +++RPL/2 (R) version 4.0.9 (samedi 23/01/2010, 18:06:08 CET)
                    545: +++Copyright (C) 1989 ŗ 2009, 2010 BERTRAND JoŽl
                    546: Number of scalar operations per second and per core : 2383016
                    547: 
                    548: - PULPRFL does not abort on BUG() but on execution error;
                    549: - TRIM, REPL and TOKENIZE are added;
                    550: - sockets options are now set before bind();
                    551: - shutdown() is added to all connected sockets;
                    552: - minor bug is fixed in SUB intrinsic (segfault when SUB is called with
                    553: list argument and inexistant elements).
                    554: * Fri Jan 08 2010 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.8 (RPL/2)
                    555: - minor bug is fixed in DAEMON intrinsic. When a program was daemonized, all
                    556: signals sent to main process were not caught because DAEMON did not replace
                    557: old pid by new one;
                    558: - major bug is fixed in IFERR/THEN/ELSE/END. Only occurs in expression
                    559: evaluation when an error is reported from a subroutine in another subroutine.
                    560: For example, error was not caught in following program when it is executed with
                    561: -p option :
                    562:    TEST << iferr TEST2 then end >>
                    563:    TEST2 << 0 inv >>
                    564: - major bug is fixed in variable management. Some local variables were
                    565: seen as global ones;
                    566: - major bug is fixed in rplcore. Rplcore entered in dead lock when
                    567: script file contains a multibyte character;
                    568: - IN intrinsic is added;
                    569: - major bug is fixed in SAME intrinsic : << 1 >> DUP SAME and 'E' DUP SAME
                    570: returned false ;
                    571: - major bug is fixed in RETURN intrinsic. It only occurs in compiled
                    572: programs;
                    573: - major bug is fixed in NEG intrinsic. NEG did not make a copy of its arguments;
                    574: - regression is fixed in compilation(). "\\" was analysed as '"' '\' '\"' and
                    575: strings were never closed;
                    576: - some bugs have been fixed in file management;
                    577: - RPL/2 can now be run on EBCDIC systems (OS/390);
                    578: - major bug is fixed in -A command line option (NULL character is missing);
                    579: - minor bug is fixed in rpliconv and RECODE intrinsic. All transliterations are
                    580: made by blocks (1024 bytes). When an incomplete multibyte sequence is
                    581: encountered at end of block, subroutine aborts with an execution error;
                    582: - major bug is fixed in OPEN (TCP/IPv4 sockets).
                    583: * Mon Nov 30 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.7 (RPL/2)
                    584: - DISP now locks stdout;
                    585: - rpliconv is added to replace standard iconv provided by operating system.
                    586: Indeed, conversion between different encodages requires transliteration
                    587: that is not offered by some iconv utility;
                    588: - CURRENC and RECODE intrinsics have been written to allow strings conversions;
                    589: - bug is fixed in SYSEVAL. When execvp() returns (for example when arg[0] can
                    590: not be found), SYSEVAL enters in a dead lock;
                    591: - fprintf is replaced by some functions that allow transliterations between
                    592: locales;
                    593: - '"' can now be used in strings ("\"");
                    594: - iconv is called with -c in preprocessor stage. It is done to write
                    595: CGI scripts with RPL/2 because locale charset is set to ANSI_X3.4-1968;
                    596: - double free is fixed in liberation() (type SQL, only occurs when locale is
                    597: set);
                    598: - LOCALIZATION, UCASE and LCASE are added;
                    599: - major bug is fixed in EXIT intrinsic that was able to return a false
                    600: execution error in compiled scripts (only in DO/UNTIL and REPEAT/WHILE loops);
                    601: - major bug is fixed in wrapper_instruction_intrinseque(). When intrinsic() was
                    602: used in onLoading from shared library, USE was pushed on stack as algebraic
                    603: expression;
                    604: - libiconv is upgraded to 1.13.1;
                    605: - gnuplot is upgraded to 4.2.6;
                    606: - gsl is upgraded to 1.13.
                    607: * Mon Sep 28 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.6 (RPL/2)
                    608: - pipe() is overwritten by a macro to avoid a system error. Communication
                    609: between process are done with pipes and these pipes are managed by a
                    610: specific asynchrone thread. If a script try to create more threads than
                    611: management thread can destroy, you can quickly achieve maximum number of
                    612: opened files and pipe() shall return a system error. This macro tries to create
                    613: pipes. If pipe() function returns an error, macro waits and retries. If
                    614: number of retries is greater than a hardcoded value, macro returns an error;
                    615: - major bug (deadlock) is fixed in process and thread management. I hope
                    616: this bug shall be the last one;
                    617: - major bug is fixed in DET intrinsic (determinant was computed without LU
                    618: diagonalization);
                    619: - SWAPCNTXT is added;
                    620: - minor bug is fixed in Makefile.am (licences rule).
                    621: * Wed Sep 09 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.5 (RPL/2)
                    622: - some bugfixes are added in process management;
                    623: - all process management is rewritten to avoid usage of defunct process
                    624: or thread number;
                    625: - new major bug is fixed in interruptions.c. Sometimes, when retrait_thread()
                    626: was called before a pending interruption5 (SIGFSTOP), signal handler uses
                    627: a freed semaphore and corrupts heap;
                    628: - CLRERR is added to erase previous errors;
                    629: - ERRN and ERRM return exception message and number;
                    630: - major bug is fixed in interruptions.c. All signal are now bufferised
                    631: when semaphore_liste_threads is null to avoid deadlock. This bug only
                    632: occured when STOP was sent to a dying thread or process (when this thread or
                    633: process was running retrait_thread());
                    634: - matrix rank is computed before matrix inversion;
                    635: - file locks are added to stdin and stdout. stderr is not locked because
                    636: all messages written by signal handlers are sent to stderr;
                    637: - configure.in script is modified to test gcc version and avoid a bug in
                    638: gcc older than 4.4;
                    639: - some benchmarks have been done :
                    640: 
                    641: cauchy:[~/rpl/bench] > ./bench.rpl 
                    642: +++RPL/2 (R) version 4.0.5 (mardi 04/08/2009, 18:23:07 CEST)
                    643: +++Copyright (C) 1989 ŗ 2008, 2009 BERTRAND JoŽl
                    644: Number of scalar operations per second and per core : 2109867
                    645: 
                    646: Workstation :
                    647: cauchy:[~/rpl/build] > uname -a
                    648: Linux cauchy 2.6.30.1 #1 SMP PREEMPT Thu Jul 16 09:49:46 2009 x86_64 GNU/Linux
                    649: cauchy:[~/rpl/build] > cat /proc/cpuinfo | grep "model name"
                    650: model name      : Intel(R) Core(TM)2 Duo CPU     T7500  @ 2.20GHz
                    651: model name      : Intel(R) Core(TM)2 Duo CPU     T7500  @ 2.20GHz
                    652: cauchy:[~/rpl/build] > gfortran -v 2>&1 | grep "gcc version"
                    653: gcc version 4.3.3 (Debian 4.3.3-14) 
                    654: cauchy:[~/rpl/build] >
                    655: 
                    656: - SVL and SVD are added;
                    657: - COND and RANK are added;
                    658: - DIAG-> and ->DIAG are added;
                    659: - major bug is fixed in DET intrinsic. DET is rewritten to avoid usage of
                    660: eigenvalues. In a first time, matrix rank is estimated to force determinant
                    661: to zero if matrix is rank deficient. If not, a PLU decomposition is done to
                    662: compute determinant;
                    663: - QR matrix decomposition is added;
                    664: - LQ matrix decomposition is added;
                    665: - Fortran90 files are rewritten to use Fortran2003 bind(C) statement and
                    666: Fortran preprocessor;
                    667: - default compilation options are now -Wall -Wextra -Wno-pointer-sign
                    668: -Wno-unused-parameter;
                    669: - all mathematical exceptions are now signaled by exceptions instead of
                    670: execution error;
                    671: - minor bug is fixed in both CSTOP and RSTOP intrinsics. Without this fix, you
                    672: can call twice CSTOP without RSTOP;
                    673: - named semaphore support is added (CRSMPHR, CLRSMPHR, SMHRDECR, SMPHRINCR,
                    674: SMPHRTRYDECR, SMPHGETV).
                    675: * Fri Jul 24 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.4 (RPL/2)
                    676: - semaphore is added in interruptions.c to avoid segmentation fault when STOP
                    677: signal is sent to a dying thread. Some mutexes are replaced by semaphores too
                    678: to be used in signal handlers;
                    679: - major bug (memory corruption) is fixed in COL- intrinsic;
                    680: - minor bug is fixed in ALARM and WAIT. These temporisations stopped when a
                    681: software interrupt was caught;
                    682: - rplpp man page is added.
                    683: * Fri Jul 17 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.3 (RPL/2)
                    684: - minor bug is fixed in WRITE (SIGPIPE is ignored to catch error without
                    685: process termination);
                    686: - major bug is fixed in FUSE intrinsic (FUSE kills itself and do not kill
                    687: its parent);
                    688: - a mutex to protect fork() syscall is added;
                    689: - all mutexes are unlocked after fork() in DETACH;
                    690: - minor bug (double free corruption) is fixed in CLOSE intrinsic;
                    691: - major bug is fixed in lecture_pipe when a nullified list is sent into a pipe;
                    692: - WORKDIR intrinsic is added;
                    693: - Level 0 variables are shared between all threads without copy. Indeed,
                    694: there variables are not modifiable and only contains static user definitions;
                    695: - branches prediction is added in THEN, ELSE, ELSEIF and REPEAT intrinsics;
                    696: - FORTRAN 77 file management subroutines are rewritten in pure C due to
                    697: FORTRAN string management. C/FORTRAN 77 string interfaces are broken
                    698: in some cases (gcc/gfortran/libc/OS and arch conjonction);
                    699: - a memory leak is fixed in REMOVE intrinsic;
                    700: - major bug is fixed in MySQL driver (segfault due to a bug in mysql_init()
                    701: and due to a libmysqlclient that is not thread safe).
                    702: * Wen Jun 10 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.2 (RPL/2)
                    703: - new enhanced allocator is written for regular variables, static variables and
                    704: shared variables;
                    705: - major bug is fixed in src/interruptions.c. This file did not compile
                    706: when SQL support was not enabled;
                    707: - new allocator is written for system stack and last stack;
                    708: - --enable-profile flag is added to configure script. When this flag is
                    709: enabled, rpl is built with -pg option;
                    710: - SIGFSTP (from Solaris'TERMIO) is caught. On Solaris 10, all process receive
                    711: SIGFSTP (with a nullified siginfo structure) instead of SIGHUP when control
                    712: process is killed;
                    713: - abs() macro is modified to avoid multiple evaluation. Your C compiler has to
                    714: know typeof() intrinsic function. This function is not standard but exists
                    715: under Sun Studio, gcc, and maybe some others compilers. If this function does
                    716: not exist on your compiler, you can change its definition by old one in
                    717: src/rpl.h;
                    718: - fflush() can now be interrupted by signal (SunOS);
                    719: - fflush(NULL) is called before all fork() occurrences;
                    720: - generators returned by RDGN help are sorted;
                    721: - Lapack is now 3.2.1.
                    722: * Mon May 18 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.1 (RPL/2)
                    723: - bug is fixed in src/generateurs_aleatoires.awk. It only occurs when RPL/2 is
                    724: built under Solaris.
                    725: * Wed May 5 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0 (RPL/2)
                    726: - major bug is fixed in matrix inversion (due to an inversion between pointer
                    727: and object copies);
                    728: - RDGN is added to use some different random number generators. See HELP RDGN;
                    729: - code analysis is rewritten from scratch to be more efficient and mode
                    730: expandable;
                    731: - minor bug (segfault in interruption1) is fixed. It only occurs on Solaris
                    732: that can returns a nullified siginfo pointer when SIGINT is sent by kernel
                    733: keyboard driver;
                    734: - gnuplot is now 4.2.5;
                    735: - readline is upgraded to 6.0;
                    736: - file is upgraded to 5.0;
                    737: - Signal handlers are rewritten to send signal to main thread when a signal
                    738: is send from an external process;
                    739: - configure.in is modified to avoid a libc bug on Solaris (free() can enter in
                    740: deadlock when a huge amount of threads is launched);
                    741: - minor bug is fixed in boath START and FOR intrinsic. Only occurs when
                    742: arguments types are unsupported;
                    743: - PLOT instrinsic is added (usage: LINE and MARK do not draw anything. All
                    744: data are buffered. PLOT is used to draw these objects.);
                    745: - MARK instrinsic is added;
                    746: - new allocator mechanism is written;
                    747: - some regression bugs have been fixed, some memory leaks too.
                    748: * Wed Jan 28 2009 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.9 (RPL/2)
                    749: - an estimation of future stack elements is added to avoid some costly memory
                    750: allocations. This function has a positive impact on execution speed;
                    751: - PSHPRFL and PULPRFL have been added;
                    752: - RPL/2 can be built on Solaris 64 bits with some minor scripts alterations.
                    753: See README for more explanations;
                    754: - MTXSTATUS intrinsic is added;
                    755: - YIELD intrinsic is added;
                    756: - ERRM is fixed. In some cases, ERRM uses some uninitialized pointers;
                    757: - SHARED and PRIVATE intrinsics have been added. A shared variable is a
                    758: static variable that is shared by multiple threads;
                    759: - '->' intrinsic is improved. All object copies have been avoided;
                    760: - -n flag is added to catch HUP signal. stderr and stdout are redirected
                    761: to a file, stdin is redirected to /dev/null when control process is killed;
                    762: - a mutex is added to each object (before this modification,
                    763: RPL/2 used a global mutex and performances in multithreaded programs were very
                    764: poor.);
                    765: - ALARM is now interruptible;
                    766: - both PUT and PUTI intrinsics are improved and do not copy list and table
                    767: when nombre_occurrences == 1;
                    768: - COPY intrinsic is added. Argument (that can be pointed from some objects)
                    769: is replaced by a new copy of itself;
                    770: - memory leak is fixed in sequenceur(). It only occurs when an execution error
                    771: is caught from interactive mode;
                    772: - mutexes have been added (CRMTX, CLRMTX, MTXLOCK, MTXUNLOCK);
                    773: - new mutex type is added;
                    774: - profile statistics have been added. See -P option;
                    775: - major bug is fixed in analyse_syntaxique();
                    776: - new SQL type is added;
                    777: - due to a trouble in libpq in multithreaded context, SQL intrinsic is split
                    778: in three new intrinsics : SQLCONNECT, SQLQUERY and SQLDISCONNECT. Please note
                    779: that all programs that worked with old SQL intrinsic can now work with
                    780: SQLQUERY. With all new programs, you can open a real connection to databases;
                    781: - NRPROC is added. This new intrinsic is used to catch error from child
                    782: process. Without NRPROC, any errors returned by child process cause
                    783: main process to abort;
                    784: - SPAWN is added. This new intrinsic is used to launch a new thread (DETACH
                    785: starts a new process). There are no mutexes in RPL/2 because all spawned process
                    786: use specific context. Nevertheless, shared variables and associated mutexes
                    787: should be added;
                    788: - -D flag and DAEMONIZE intrinsic have been added;
                    789: - REPEAT, THEN, ELSE and ELSEIF intrinsics are rewritten to be more efficient;
                    790: - autoconf script is modified to handle mysql and postgresql on non standard
                    791: directories;
                    792: - -t flag is fixed ('\0' is missing...);
                    793: - SWI and SEND pipes have been modified to be more robust on systems where
                    794: getpid() can return (pid_t) -1 or (pid_t) -2 value;
                    795: - major bug is fixed in REPEAT intrinsic. Only occurs in compiled mode;
                    796: - all but jump variables are removed from source. All signal handlers now
                    797: use encapsulated variables and signals are caught by thread;
                    798: - major bug is discovered in ->LCD. Both LCD-> and ->LCD have been fixed;
                    799: - NEWPLANE is added;
                    800: - LINE is added;
                    801: - DGTIZ is added;
                    802: - major bug is fixed in ROW-> intrinsic (comes from new garbage collector);
                    803: - lot of multiprocessing related bugs have been fixed; That was a huge work but
                    804: it's done. Data integrity is now respected during transmission (POKE, SEND and
                    805: SWI);
                    806: - ITRACE is added. This intrinsic is only used to debug internal structures and
                    807: should not be used in regular programs;
                    808: - SWISTATUS is written;
                    809: - WFACK is written;
                    810: - rplcore files are now able to handle compilation errors;
                    811: - rplcore files are now able to handle evaluation and interruption errors;
                    812: - SORT can now be used on table;
                    813: - tables can now be sent by POKE and SEND instrinsics;
                    814: - software interrupts do not inherit IFERR controls;
                    815: - LOGGER intrinsic is added;
                    816: - All WF* intrinsics but WFSOCK are made interruptible;
                    817: - ISWI intrinsic is added. Current interrupt is marked as 'interruptible';
                    818: - tables can be used with SAME intrinsic;
                    819: - minor bug is fixed in recherche_variable(). Only occurs when an error
                    820: is caught;
                    821: - external functions can now be used in expressions;
                    822: - major bug (deadlock) is fixed in WFPOKE intrinsic;
                    823: - some mistakes have been fixed under Solaris;
                    824: - major bug is fixed in RETURN intrinsic (only occurs when evaluation and
                    825: program modes are mixed);
                    826: - major bug (dead lock) is fixed in gestion_processus.c;
                    827: - major bug is fixed in WFPROC;
                    828: - rplc, rpllink and mkrplso manpages are added;
                    829: - rpltags tool and manpage are added;
                    830: - WFLOCK is fixed;
                    831: - RPL/2 kills now all process on error;
                    832: - major bug (segfault) is fixed in REMOVE intrinsic.
                    833: * Mon Jul 28 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.8 (RPL/2)
                    834: - configure script is modified to check mysql and postgresql libraries
                    835: on all standard locations. Tested and works on FreeBSD, Solaris and Linux
                    836: Debian;
                    837: - Tables are allowed in eval ( <[ 1 ]> 't' sto 't(1)' eval );
                    838: - ->TABLE and TABLE-> intrinsics are added;
                    839: - major bug is fixed in recherche_type(). Only occurs when rpl executes
                    840: precompiled scripts;
                    841: - new type is added: table with <[ ]> delimiters:
                    842: RPL/2> { 2 3 2 } crtab
                    843: 
                    844: 1: <[ <[ <[ { }
                    845:             { } ]>
                    846:          <[ { }
                    847:             { } ]>
                    848:          <[ { }
                    849:             { } ]> ]>
                    850:       <[ <[ { }
                    851:             { } ]>
                    852:          <[ { }
                    853:             { } ]>
                    854:          <[ { }
                    855:             { } ]> ]> ]>
                    856: 
                    857: CRTAB new intrinsic creates a regular table. By default, all elements are
                    858: nullified lists;
                    859: - rplexternals.h is modified and improved;
                    860: - GNU File (renamed as rplfile) cannot be built due to a bug in libtoolize and
                    861: configure script.
                    862: * Mon Jun 23 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.7 (RPL/2)
                    863: - libiconv is added (iconv library exists on some systems but implemantations
                    864: differ and RPL/2 can crash);
                    865: - --enable-encoding is added to configure script to force system encoding.
                    866: Enconding detection does not work on OpenBSD;
                    867: - internal file utility is shipped and used to avoid xBSD file mistakes;
                    868: - GSL 1.11 and gnuplot 4.2.3 are now used;
                    869: - src/Makefile.am is modified to built RPL/2 ons Solaris 10/sparc;
                    870: - all but user's messages are written on stderr;
                    871: - DUPCNTXT and DROPCNTXT are added to handle more efficiently contexts;
                    872: - SCHED is added. Whit SCHED, you can limit CPU ressource by RPL/2 process;
                    873: - FUSE, RFUSE and CLRFUSE have been added;
                    874: - new bug discovered on NetBSD. sigpending() does not return any signal, thus
                    875: DETACH intrinsic enters in a definitive dead lock. I have no idea to write a
                    876: workaround for this major bug. Nevertheless, all others capabilities seems to
                    877: work fine;
                    878: - '->' is modified to return error when program tries to initialiaze two
                    879: variables with the same name like
                    880: 1 0 -> I I << ... >>;
                    881: - CSTOP and RSTOP have been added (catch and release stop signal);
                    882: - CONTINUE is added to continue a pending process halted by SUSPEND;
                    883: - SUSPEND is modified to be stopped by SIGFSTOP;
                    884: - src/Makefile.am is modified to avoid //TRANSLIT flag on systems that don't
                    885: support GNU iconv;
                    886: - configure.in script is modified to avoid bugs when --with-postgresql and
                    887: --with-mysql are specified;
                    888: - TRNC is written;
                    889: - minor bug is fixed in both IFT and IFTE. Returned expression has to be
                    890: evaluated.
                    891: * Fri Apr 11 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.6 (RPL/2)
                    892: - SIGPIPE signal handler is modified to avoid abort process when POKE tries
                    893: to write data into a pipe without reader;
                    894: - major bug is fixed in RETURN intrinsic. When RETURN was called from a detached
                    895: process without -p modifier, it can send an ABORT signal instead a KILL one;
                    896: - PEEK, POKE and WFPOKE new intrinsics are written;
                    897: - major bug due to new garbage collector is fixed in rplexternals.h (double free
                    898: corruption);
                    899: - CLRCNTXT is added (clear contexts);
                    900: - VERIFY intrinsic is written;
                    901: - PSHCNTXT and PULCNTXT are added (PSHCNTXT pushes context on an
                    902: internal contexts stack, PULCNTXT pulls contexts from this internal stack).
                    903: Main usages of these intrinsics are in conjonction with IFERR or with
                    904: software interrupts;
                    905: - HEAD, TAIL and REVLIST intrinsics are added;
                    906: - function pointers have been added to function description;
                    907: - new analyse() routine is written. All instrinsics are now in a N-tree;
                    908: - software interrupts have been fixed;
                    909: - multitasking capabilities have been modified to be usable on NetBSD. All real
                    910: time signals have been removed;
                    911: - major bugs are fixed in multitasking (mutex trouble _and_ segmentation fault);
                    912: - minor bug is fixed in STR->. STR-> could return a system error instead an
                    913: execution one;
                    914: - first bug due to new garbage collector is fixed in '+' ({ } { } +) and in
                    915: '-' intrinsics;
                    916: - PostgreSQL support is written.
                    917: * Mon Mar 17 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.5 (RPL/2)
                    918: - locale can now be specified in SQL intrinsic :
                    919: { "mysql:iso-8859-1" "server" "database" ... };
                    920: - major bug is fixed un analyse_algebrique(). When DISP printed an algebraic
                    921: object, 'DISP()' was pushed in stack;
                    922: - same major bug is fixed in <, >, <=, >= and <>;
                    923: - major bug fixed in formateur() (segfault when a symbol is used without "'");
                    924: - major bug is fixed in DUPN intrinsic;
                    925: - when software interrupt (SWI) is evaluated, SWI pushs process id on stack
                    926: before starting interrupt evaluation;
                    927: - -f parameter is added when iconv is called;
                    928: - as old file program was bugged, a new option is added to configure script.
                    929: When configure is called with --disable-encoding-autodetection, make does not
                    930: try to detect source encoding. Please, do not use if RPL/2 can be built
                    931: without this option !
                    932: - new garbage collector (and more efficient) is written;
                    933: - configure script is modified to be usable on NetBSD 4.0, but as NetBSD does
                    934: not support real time signals, RPL/2 cannot use multitasking functions;
                    935: - error returned by preprocessor are now catched by RPL/2;
                    936: - -p option is added. With this option, all scripts are compiled before
                    937: RPL/2 starts evaluation. HALT cannot be used with -p, but all programs run
                    938: 40% faster;
                    939: - read and write operations in pipe() are rewritten to be sure that such
                    940: operations are atomic;
                    941: - minor bug is fixed in LOGSCALE. With {} LOGSCALE, all scales have to be
                    942: linear;
                    943: - major bug is fixed in gestion_processus.c (some pipes were not closed).
                    944: * Sat Jan 5 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.4 (RPL/2)
                    945: - major bugs have been fixed in software interrupt management.
                    946: * Fri Jan 4 2008 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.3 (RPL/2)
                    947: - JDATE and RDATE are written;
                    948: - minor bug (segfault) is fixed in EXSUB. It only occurs when EXSUB is executed
                    949: with wrong arguments;
                    950: - KILL now kills current process, ABORT kills program;
                    951: - software interrupts support is added (SWI, WFSWI, SWILOCK, SWIUNLOCK,
                    952: SWIQUEUE, STOSWI, RCLSWI, CLRSWI);
                    953: - major bug is fixed in SQL intrinsic (argument types);
                    954: - system stack is now written in core file;
                    955: - ALARM is added;
                    956: - nanosleep() now replaces sleep() and usleep() system calls;
                    957: - _GNU_SOURCE is added to rpl.h.
                    958: * Fri Nov 30 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.2 (RPL/2)
                    959: - License is changed. Now RPL/2 license is CeCILL (GPL compliant);
                    960: - EXGET adn EXSUB are added;
                    961: - minor bug is fixed in recherche_type(). { <<†} has to return an error.
                    962: '<<' and '>>' are both functions _and_ delimiters. Thus { IF } is
                    963: acceptable, but {†>> } isn't;
                    964: - GSL is now 1.10, gnuplot 4.2.2 and units 1.87;
                    965: - OBGET and OBSUB intrinsics are added;
                    966: - src/Makefile.am minor bug is fixed (make clean deleted src/rpl.xpm);
                    967: - WAIT intrinsic is modified to use sleep() and usleep() if delay is
                    968: greater than one second. On some systems, usleep argument must be lower
                    969: than 1E6;
                    970: - numeric and character formats are now tested;
                    971: - -A flag is added. -A is used to give command line parameters to main
                    972: routine. Example:
                    973: rayleigh:[~/rpl-4.0.0.prerelease.2/examples] > ./test3.rpl -A "<< X sin >>"
                    974: +++RPL/2 version 4.0.0.prerelease.2 (vendredi 05.10.2007, 19:03:01 CEST)
                    975: +++Copyright (C) 1989 ŗ 2006, 2007 BERTRAND JoŽl
                    976: << 'X' SIN >>
                    977: rayleigh:[~/rpl-4.0.0.prerelease.2/examples] > cat test3.rpl 
                    978: #!/usr/local/bin/rpl -s
                    979: 
                    980: TEST
                    981: <<
                    982:     disp
                    983: >>
                    984: - minor bug (segfault) is fixed in encart() routine (splash screen). Child
                    985: process ended with segfault due to a mistake in Motif widget cleaning
                    986: process;
                    987: - major bug is fixed in DETACH intrinsic. Child process were locked when
                    988: they were started with a locked mutex that comes from its father;
                    989: - ctrl+C can now kill all child process;
                    990: - WFPROC and WFDATA are rewritten;
                    991: - RETURN is fixed to be usable in detached process;
                    992: - HALT is not exported to child process;
                    993: - FLOW filetype is added;
                    994: - Makefiles are modified to support gcc-4.2 and gfortran-4.2;
                    995: - socket support (Unix, IPv4, IPv6, STREAM, DATAGRAM, ROBUST DATAGRAM,
                    996: SEQUENTIAL DATAGRAM, RAW) is added. Warning: IPv6 sockets have not been tested
                    997: because I don't have any IPv6 compliant server, but they should work.
                    998: * Mon Sep 10 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.1 (RPL/2)
                    999: - library management is rewritten from scratch. EXTERNAL is removed and
                   1000: EXTERNALS is added. Now, all exported symbols are sent to RPL/2 when
                   1001: library is loaded;
                   1002: - OPEN arguments are changed;
                   1003: - EXTERNAL now checks availability of external functions;
                   1004: - number of arguments is verified in analyse_algebrique().
                   1005: 'SIN(A+X,2)' is now refused because SIN requires only one argument;
                   1006: - all but lapack symbols are exported from librpl with librpl, f77 or f90
                   1007: prefix;
                   1008: - minor bug is fixed in formateur() (AND and OR requires parenthesis);
                   1009: - rplexternals.h header file is added; Now, it is very easy to write
                   1010: external functions;
                   1011: - memory leak is fixed in analyse_algebrique();
                   1012: - minor bug (symbole flag) is fixed in sequenceur.c and types.c;
                   1013: - temp file was not removed when an error occurs in EDIT or VISIT;
                   1014: - 'name' should not returned a function ("FCT" object);
                   1015: - -rdynamic is added to src/Makefile.am.
                   1016: * Mon Jul 23 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.0.0.prerelease.0 (RPL/2)
                   1017: - Major bug is fixed in interface_tex.c. When there are errors in latex
                   1018: file, latex command waits for input on its command line;
                   1019: - major bug is fixed in tex.h (multiline strings);
                   1020: - examples subdir is added;
                   1021: - major bug is fixed in recherche_variable(). When an expression is evaluated
                   1022: in a function, all variables set in this function must be visible in
                   1023: expression. Thus, << I -> 3 << << I >> eval >> must return 3, not 'I';
                   1024: - LAST stack is saved in rplcore;
                   1025: - major bug is fixed in ->HMS. It only occurs when argument type is not
                   1026: integer or real;
                   1027: - major bug (segfault) is fixed when rpl is called with empty file;
                   1028: - libtool support is removed. Two new scripts (rplc and rpllink) are provided
                   1029: to use librpl.a;
                   1030: - automake scripts are rewritten to avoid a misconfiguration of librpl.a
                   1031: when -j make option is used;
                   1032: - trace output now contains PID;
                   1033: - rpl-core is renamed in rpl-code-$PID;
                   1034: - rplc and rpllink scripts can now sompile and build C and Fortran
                   1035: executables with librpl.a;
                   1036: - New classification, only a working simplification() routine is
                   1037: required to announce 4.0.0.final;
                   1038: - librpl entry point is modified to return results as strings array;
                   1039: - -S option is added;
                   1040: - due to a major bug in libtool, libtool is removed from autoconf/automake
                   1041: scripts;
                   1042: - VERSION is modified to return a list.
                   1043: * Tue Jul 17 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8x (RPL/2)
                   1044: - major regression bug is fixed in PRINT due to mistake in latex pathes;
                   1045: - gnuplot does not have to be built if --disable-embedded-gnuplot is set;
                   1046: - new prompt ("RPL/2> ") is used for interactive mode;
                   1047: - ARCCOS, ARCSIN, ARCTG, ARGCH, ARGSH, ARGTH, CH, SH, TH and TG intrinsics
                   1048: are removed, because all of these intrinsics have two forms. ARCCOS is
                   1049: the same than ACOS, TAN=TG, COSH=CH. Please adapt your scripts;
                   1050: - gnuplot compilation does not have to be done when disable-gnuplot is set;
                   1051: - major bug is fixed in RECV that avoid usage of multitasking.
                   1052: * Tue Jul 10 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8w (RPL/2)
                   1053: - False error (system error) was reported by recherche_type();
                   1054: - recherche_type() returns syntax error if a list is included in
                   1055: an algebraic expression;
                   1056: - --enable-debug is modified. Now, return can be defined to print
                   1057: on stdout its position in source code (line and function);
                   1058: - minor bug is fixed in recherche_type(). Don't forget that space
                   1059: are not significant in algebraic expression:
                   1060: '12 3+ 12    X' is the same expression than '123+12X';
                   1061: - src/Makefile.am is modified to avoid double compilation process;
                   1062: - --enable-final-run-path is added to configure.in script;
                   1063: - STATIC is modified to declare static variables in expression. Warning: static
                   1064: variables used in expressions are deleted when evaluation of this expression
                   1065: ends;
                   1066: - MEM does not report static variable sizes;
                   1067: - minor bug is fixed in HELP intrinsic. When the last instruction was not
                   1068: known, HELP function was pushed in operational stack. HELP did not work
                   1069: when there were space on input line.
                   1070: * Mon May 28 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8v (RPL/2)
                   1071: - DATE is modified: reduced julian days is replaced by fraction part
                   1072: of julian days. Old field used by julian days is now integer part of julian
                   1073: days;
                   1074: - CONVERT intrinsic is rewritten to accept absolute path in popen;
                   1075: - automake scripts are modified to delete src/lock file if build process aborts;
                   1076: - rplargs.h directly includes rpl.h;
                   1077: - absolute pathes are added to all external program files (rplplot, rplpp...);
                   1078: - intrinsic functions are case sensitive. External functions are case
                   1079: unsensitive. A minor bug is fixed in recherche_type() because all external
                   1080: functions were case unsensitive when they were evaluated from RPN expressions;
                   1081: - HELP function is rewritten to be more friendly (a la OpenVMS);
                   1082: - external wrapper (rplplot) is written to force usage of gnuplot provided
                   1083: by RPL/2 if it is built during build process. If this build does not exist,
                   1084: it tries to launch regular gnuplot;
                   1085: - gnuplot is added to source tree to avoid some trouble between preinstalled
                   1086: gnuplot and release used by RPL/2. This addition to source tree is
                   1087: required by some incompatibility between gnuplot releases;
                   1088: - Lapack is upgraded to 3.1.1 release;
                   1089: - GSL is upgraded to 1.9 revision;
                   1090: - RPL_TMP_PATH env variable is added to specify the path of tempfiles. If
                   1091: it is not set, /tmp is used. If /tmp is not writable, /var/tmp is used. If
                   1092: not, ./ but RPL/2 can hang with a fatal error if this last location is
                   1093: not writable;
                   1094: - major regression is fixed in SYSEVAL intrinsic due to introduction of
                   1095: error scrutation.
                   1096: * Sat Mar 24 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8u (RPL/2)
                   1097: - SYSEVAL is modified to return an error when execvp() syscall cannot
                   1098: execute its arguments;
                   1099: - -hard-float sparc option is remove from mkrplso;
                   1100: - major bug is fixed in SQL intrinsic that hangs when query did not return
                   1101: any values (for exemple INSERT);
                   1102: - escape sequences can be used in SYSEVAL argument like "echo \"string\""
                   1103: SYSEVAL;
                   1104: - graphic and PostScript outputs are now cleared in child process;
                   1105: - locales are now used by preprocessor;
                   1106: - major bug is fixed in impression_tex(). PRINT did not work due to a bug
                   1107: introduced by multitasking code;
                   1108: - SORT can now use name as its argument.
                   1109: * Sun Jan 21 2007 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8t (RPL/2)
                   1110: - Variable management has been rewritten and some tests have been done. Now,
                   1111: it is possible to execute:
                   1112: 
                   1113: #!/usr/local/bin/rpl -sc
                   1114: 
                   1115: TEST
                   1116: <<
                   1117:     1 1000 start VAR_S VAR_S2 next
                   1118: >>
                   1119: 
                   1120: VAR_S
                   1121: <<
                   1122:     static 3 -> C << C disp 'C' incr if C 10 > then 'C' volatile end >>
                   1123: >>
                   1124: 
                   1125: VAR_S2
                   1126: <<
                   1127:     static 3 -> C << C disp 'C' decr >>
                   1128: >>
                   1129: 
                   1130: - configure.in script is added in lapack subtree;
                   1131: - VARS is modified to display variables status (LOCKED/UNLOCKED and
                   1132: STATIC/VOLATILE/PARAMETER/VARIABLE);
                   1133: - STATIC and VOLATILE intrinsics are added to specify static variables. A
                   1134: static variable can be transformed into volatile with VOLATILE.
                   1135: With STATIC, next variables created by '->' are static;
                   1136: - PROTECT and UNPROTECT are added to protect variables against write
                   1137: or purge actions. New PARAMETER and VARIABLE intrinsics are modified
                   1138: versions of PROTECT and UNPROTECT that only deal with global variables
                   1139: (see RCL/SAVE);
                   1140: - variable management routines have been rewritten. The new ones are
                   1141: uncompatible with the old ones. Before these changes, a local variable
                   1142: was exported to a child subroutine, but cannot be modified into this
                   1143: child subroutine. Now, a local variable is accessible only in its subroutine;
                   1144: - SAVE intrinsic is added to manipulate global variables;
                   1145: - SUSPEND is written. RPL/2 waits for a SIGCONT signal;
                   1146: - SORT, COL->, ->COL, ROW->, ROW-> intrinsics are written;
                   1147: - Makefile.am are improved;
                   1148: - minor bug is fixed in ->list and ->array. Without any argument, these
                   1149: intrinsic only send a SIGSEGV;
                   1150: - ncurses is updated to release 5.6;
                   1151: - lapack is updated to 3.1.0.
                   1152: * Sun Dec 31 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8s (RPL/2)
                   1153: - default CFLAGS/FFLAGS/FCFLAGS are modified due to a bug in gcc-sparc64
                   1154: that avoid a complete build;
                   1155: - CTRL+Z and CTRL+C signals only perform actions on main process;
                   1156: - major bugs are fixed in multitasking capabilities (some mistakes with
                   1157: mutexes and several terminated child process cannot be closed by the
                   1158: operating system);
                   1159: - minor bug fixed in SCLS (mistake between main and auxiliary axes);
                   1160: - variables are now written in rpl-core file;
                   1161: - NEG is modified to return 0 instead -0 when its argument is real or complex
                   1162: number;
                   1163: - ROW+ intrinsic can now be used on empty matrix without dimension error:
                   1164: [[]] 1 [[ 1 2 ]] row+;
                   1165: - major bug is fixed in SUB intrinsic. It only occurs with lists when
                   1166: it tries to returns invalid elements like { } 1 2 sub;
                   1167: - major bug is fixed in ROW- intrinsic;
                   1168: - major bug is fixed in ROW+ intrinsic.
                   1169: * Sat Dec 02 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8r (RPL/2)
                   1170: - creation_nom_fichier() is rewritten to force all process to create
                   1171: different file names;
                   1172: - RANLUX is removed to use GSL library and avoid a bug in gfortran-4.1;
                   1173: - readline-5.2 and units-1.86 are now used;
                   1174: - SEQUENCE statement is added in fonctions_speciales.f90 to fix a build
                   1175: failure.
                   1176: * Mon Oct 23 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8q (RPL/2)
                   1177: - wfproc is rewritten to avoid a dead lock;
                   1178: - major mistake is fixed in both sommation_vecteur_reel() and
                   1179: sommation_vecteur_complexe();
                   1180: - multitasking is rewritten from scratch to fix some mistakes with
                   1181: multithreading. DETACH, SEND and RECV now use four real time signals to
                   1182: perform a better task synchronization;
                   1183: - some bugs introduced by locales specific compilations are fixed;
                   1184: - major memory corruption is fixed in DEPND;
                   1185: - HELP intrinsic is modified to print a classified output.
                   1186: * Mon Aug 12 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8p (RPL/2)
                   1187: - major memory leak is fixed in DETACH intrinsic. Files were closed by
                   1188: both childs and parent;
                   1189: - bug that avoids usage of Motif is fixed in configure.in;
                   1190: - makefile's are modified to build RPL/2 with other locale than ISO-8859;
                   1191: - db is removed from source tree due to some compilation troubles (db's
                   1192: autoconf script is broken);
                   1193: - sdb is removed from source tree due to some memory leaks and some troubles
                   1194: with its configure script. New SQL routines are written, but only MYSQL
                   1195: subsystem is available. Now, SQL can be used without memory leak;
                   1196: - major bug is fixed in evaluation() subroutine. Value of error flag
                   1197: was not returned in some cases;
                   1198: - FACT intrinsic does not accept real arguments anymore due to the new intrinsic
                   1199: GAMMA;
                   1200: - GAMMA intrinsic is added (complex function) ;
                   1201: - autoconf/automake scripts are modified to compile F90 sources;
                   1202: - src/distributions.f is replaced by src/distributions.f90. All Numerical
                   1203: Recipes references are avoided to use GSL;
                   1204: - GSL is upgraded to 1.8 release;
                   1205: - -lz is added in src/Makefile.am to fix a mistake in sparc32.
                   1206: * Mon Apr 10 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8o (RPL/2)
                   1207: - fft.f is removed. Now FFT intrinsic uses dft subroutine;
                   1208: - Sparc64 optimizations are modified. Now gcc-4.0 can be used to build RPL/2 on
                   1209: Sparc64. Same modifications are done on sparc32;
                   1210: - major bug are fixed in both PLOTTER and HISTOGRAM intrinsics
                   1211: (interface with GNUplot).
                   1212: - major bugs are fixed in USE/REMOVE intrinsics (system stack corruption);
                   1213: - corruption of last stack is fixed in mclrin (only occurs when an error is
                   1214: caught);
                   1215: - major bug (in a malloc condition) is fixed in derivation().
                   1216: * Tue Jan 07 2006 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8n (RPL/2)
                   1217: - configure script and makefiles are modified to be usable with automake
                   1218: 1.9.6 (GNU), libtool 1.5.20 (GNU) and autoconf 2.59 (GNU).
                   1219: - gestion_fichiers() prototype is modified to be built by gfortran. Now,
                   1220: gfortran is the default compiler for FORTRAN code included in RPL/2;
                   1221: - libdb is added to perform indexed file access;
                   1222: - SQL interfaces are added (SQL intrinsic). Only mysql is supported;
                   1223: - minor bug is discovered and fixed in matrix multiplication (precision);
                   1224: - rpl.spec.in and debian directory are deleted due to some mistakes in the
                   1225: scripts required to build packages.
                   1226: * Tue Nov 15 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8m (RPL/2)
                   1227: - major bug is fixed in IFERR/THEN/(ELSE)/END structure. It occured when an
                   1228: error is caught before a regular IF/THEN/(ELSE)/END structure in
                   1229: IFERR/THEN/(ELSE)/END structure;
                   1230: - chmod 755 debian/rules is done by makefile;
                   1231: - major bug is fixed in recherche_instruction_suivante():
                   1232: +++"123 " str->
                   1233: +++Erreur : Argument invalide pour la commande << "123 " str-> >>
                   1234: Before this fix, it was impossible to use a command line that ends with spaces.
                   1235: * Sat Oct 29 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8l (RPL/2)
                   1236: - SELECT/CASE/DEFAULT/END is modified. Now, it is impossible to write:
                   1237: SELECT
                   1238:    <case>
                   1239:    CASE <test> THEN <expr> END
                   1240:    ...
                   1241:    DEFAULT
                   1242:    DEFAULT <- two DEFAULT's
                   1243: END
                   1244: 
                   1245: or
                   1246: 
                   1247: SELECT
                   1248:    <case>
                   1249:    CASE <test> THEN <expr> END
                   1250:    ...
                   1251:    DEFAULT
                   1252:    ...
                   1253:    CASE <test> THEN <expr> END <- CASE statement after DEFAULT
                   1254: END
                   1255: - major bug is fixed (in (unsigned char) getc()). It only occurs when RPL/2 is
                   1256: built with gcc-4.0.
                   1257: - configure.in is modified to be usable with gcc-4.0.
                   1258: * Mon Oct 3 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8k (RPL/2)
                   1259: - segmentation fault occurs in both PROMPT and INPUT when readline returns
                   1260: NULL (ctrl^D). This trouble is now fixed;
                   1261: - major bug is fixed in DATE intrinsic (julian days and reduced julian days);
                   1262: - stderr of rplpp is now caught;
                   1263: - SYSEVAL is modified to use stdin, stdout and stderr:
                   1264: ESSAI
                   1265: <<
                   1266:    // Only stdout and stderr
                   1267:     "ls" dup disp syseval
                   1268:     clmf
                   1269:    // Now with stdin ("zer\naze\n")
                   1270:     { "cat" "zer" "aze" } dup disp syseval
                   1271:     clmf
                   1272: >>
                   1273: - GSL is upgraded to 1.7.
                   1274: * Thu Sep 29 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8j (RPL/2)
                   1275: - SYSEVAL is modified. It now returns stdout and stderr in a list;
                   1276: - minor memory leak is fixed in recherche_instruction_suivante() subroutine.
                   1277: * Thu Aug 4 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8i (RPL/2)
                   1278: - internal file descriptors are modified to be usable with DUMP intrinsic;
                   1279: - VARS intrinsic is modified and now prints value of variables.
                   1280: * Thu Jul 21 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8h (RPL/2)
                   1281: - units is upgraded to 1.85 release;
                   1282: - -d flag is added in command line. Don't use this flag if you don't know
                   1283: what you do! It is only used to debug internal memory allocations;
                   1284: - internal pointers (ADR objects) are printed as 64 bits pointers to be usable
                   1285: on 64 bits wide architectures.
                   1286: * Sat apr 16 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8g (RPL/2)
                   1287: - DUMP is rewritten to be portable. It works, but without shared libraries,
                   1288: printer file, graphic files and last error. Support for this kind of objects
                   1289: shall be available as soon as possible. Warning: DUMP cannot be used in
                   1290: multiprocessing;
                   1291: - configure.in script is modified to return an error when g77 is not found;
                   1292: - a new internal type is used to handle shared libraries;
                   1293: - a major bug is discovered and fixed in recherche_type(). It only occurs
                   1294: in interactive mode ([[ 1 ]] returns a syntax error);
                   1295: - a major bug is found in simplification_arbre(). Subroutine is disabled.
                   1296: * Thu mar 17 2005 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8f (RPL/2)
                   1297: - option -r is added to restart a process from a dump file;
                   1298: - DUMP intrinsic is added. It performs synchronous checkpointing;
                   1299: - GSL is upgraded to release 1.6.
                   1300: * Wed dec 22 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8e (RPL/2)
                   1301: - Result types of PERM and COMB instrinsic are fixed;
                   1302: - RPL/2 now uses a new preprocessor due to a new 'feature' in gcc/cpp;
                   1303: - RPL/2 can now use all processors on multiprocessor workstations with
                   1304: DETACH, SEND, RECV and WFPROC new intrinsics. The first test program was:
                   1305: 
                   1306: #!/usr/local/bin/rpl -cs
                   1307: 
                   1308: MULTIPROCESSUS
                   1309: <<
                   1310:     'FONCTION' detach
                   1311:     do "B" disp until false end
                   1312: >>
                   1313: 
                   1314: FONCTION
                   1315: <<
                   1316:     do "A" disp until false end
                   1317: >>
                   1318: 
                   1319: * Sun dec 12 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8d (RPL/2)
                   1320: - major bug is discovered and fixed in analyse_notation_algebrique :
                   1321: +++'A-B-C' returned
                   1322: 1: 'A-(B-C)' instead of 1: 'A-B-C'. It is now fixed;
                   1323: - recherche_type() routine is improved to cast in name 1E5E-6 or 1.23.4.5.
                   1324: * Fri dec 7 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8c (RPL/2)
                   1325: - major bug is fixed in formateur_fichier(). Now, it is possible to use
                   1326: lists in a file record. Note that only sequential and formatted files
                   1327: are supported;
                   1328: - major bug is fixed in BACKSPACE intrinsic. It only occurs on large
                   1329: records.
                   1330: * Fri nov 26 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8b (RPL/2)
                   1331: - minor bug is fixed in IP intrinsic: when argument was real without
                   1332: fraction part, IP returned a real, not an integer;
                   1333: - minor bug is fixed in recherche_type(): it is now possible
                   1334: to enter +++<NB3 + return. RPL/2 returns a syntax error, not a acces
                   1335: violation;
                   1336: - MCLRIN (MacLaurin series) intrinsic is added;
                   1337: - TAYLR (Taylor series) instrinsic is added;
                   1338: - very minor bug is fixed in evaluation(). Sometimes, when evaluation()
                   1339: is stopped by ^C, EXIT intrinsic did not work due to a mistake in
                   1340: the internal system stack;
                   1341: - minor bug is fixed in encart.c. System error messages returned by
                   1342: this subroutine were only available in french;
                   1343: - internal RPL/2 system stack corruption is fixed. This bug only affects
                   1344: interactive and debug modes when evaluation routine returns an error;
                   1345: - symbolic derivation subroutine is now able to derivate functions;
                   1346: - minor bug is fixed in instruction_multiplication: now 'X' 1. * returns
                   1347: 'X' and not 'X*1'.
                   1348: * Thu nov 18 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8a (RPL/2)
                   1349: - ctags in src/Makefile.am is fixed;
                   1350: - first derivation subroutines are written;
                   1351: - major bug is fixed in analyse_algebrique() :
                   1352: before this patch, '3-5+4' was understand as '3-(5+4)' !
                   1353: - instruction_division() is improved and returns 0 when it evaluates
                   1354: '0/X';
                   1355: - instruction_moins() is improved and returns 'NEG(X)' when it evaluates
                   1356: '0-X'.
                   1357: * Fri nov 5 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre8 (RPL/2)
                   1358: - interface_gnuplot is modified and do not use any deprecated gnuplot
                   1359: commands. Warning, you must use gnuplot 4.0;
                   1360: - graphic output is improved. Now, it is possible to use two separated
                   1361: scales on the same 2D graph (with "main" and "auxiliary" option of SCALE
                   1362: intrinsic). For example:
                   1363: 
                   1364: #!/usr/local/bin/rpl -c
                   1365: 
                   1366: TEST
                   1367: <<
                   1368:    'X' indep
                   1369:    { X Y } autoscale
                   1370:    'SIN(X)' steq draw
                   1371:    { "auxiliary" } axes
                   1372:    { X Y } autoscale
                   1373:    'COS(X)+2' steq draw
                   1374:    { { "ticsonly" "automatic" } { "ticsonly" "automatic" } } axes
                   1375:    drax persist
                   1376: >>
                   1377: 
                   1378: - a major bug is fixed in encart.c;
                   1379: - ncurses is patched.
                   1380: * Mon nov 1 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre7o (RPL/2)
                   1381: - configure script is updated;
                   1382: - splash screen is added;
                   1383: - minor bug is fixed in SYSEVAL (only occurs with SIGINT signal).
                   1384: * Sun oct 24 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre7n (RPL/2)
                   1385: - stack overflows are caught.
                   1386: * Fri oct 8 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre7m (RPL/2)
                   1387: - minor bug is fixed in both << and >> intrinsics. It only occurs when
                   1388: "<<" HELP or ">>" help is called;
                   1389: - DFT and IDFT are added;
                   1390: - minor bug is fixed in FFT (explicit length has to be positive);
                   1391: - MOD can be used with vectors and matrices arguments;
                   1392: - major bugs are fixed in FFT and IFFT (trouble in the computation of the
                   1393: default length of FFT). Only occur with matrices.
                   1394: * Sat aug 14 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre7l (RPL/2)
                   1395: - readline is upgraded to 5.0;
                   1396: - gsl is upgraded to 1.5;
                   1397: - corrections in HELP functions.
                   1398: * Fri aug 7 2004 BERTRAND JoŽl <rpl@systella.fr> rpl-4.00pre7k (RPL/2)
                   1399: - HELP is added;
                   1400: - statistic matrix SIGMA is renamed as SDAT;
                   1401: - rpl.h is modified to workaround a bug in Cygwin environment
                   1402: (SA_NOMASK is not defined in include files);
                   1403: - overflows are tested in HMS+ and HMS-;
                   1404: - CEIL, FLOOR and IP are modified to return a correct result with huge
                   1405: arguments that cannot be stored as integers;
                   1406: - fix a minor bug in ->LIST. The LAST stack now contains all arguments
                   1407: of this intrinsic;
                   1408: - flag 32 is used with DISP;
                   1409: - major bug is fixed in ->Q intrinsic (type of argument and memory leak).
                   1410: * Fri may 21 2004 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7j (RPL/2)
                   1411: - major bug is fixed in analyse(). CHR intrinsic cannot be called because
                   1412: I have erased a 'break' in a case statement;
                   1413: - major bug is fixed in AXES intrinsic. It only occurs when AXES is used
                   1414: with "main" or "auxiliary" option;
                   1415: - major bug is fixed in recherche_types(). With this patch, 'sin(X)' is
                   1416: now well analysed as 'SIN(X)'.
                   1417: * Thu apr 22 2004 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7i (RPL/2)
                   1418: - major bug is discovered and fixed in formateur(). It only occurs when
                   1419: an algebraic expression is displayed with '='. In some cases, parenthesis
                   1420: are missing. Same fix in formateur_fichier();
                   1421: - a minor bug is fixed in evaluation.c that does not return any error when
                   1422: it tries to execute 'a=z' e = ;
                   1423: - new code is written in each intrinsic functions to return their required
                   1424: arguments.
                   1425: * Sun apr 14 2004 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7h (RPL/2)
                   1426: - a minor bug is fixed in recherche_type: 1.E90 is now a real;
                   1427: - minor bug is fixed in formateur_reel(). It only occurs in STD mode:
                   1428: 1E90 was printed as 1.00000000000000E90;
                   1429: - HELP is added;
                   1430: - formateur() is fixed to properly print matrices and lists;
                   1431: - a lot of warnings due to deprecated syntax are fixed;
                   1432: - DFT is modified but not usable;
                   1433: - cosmetic bug is fixed in formateur_tex.c;
                   1434: - minor bug is fixed in FFT intrinsic (segfault when FFT is called without
                   1435: any argument).
                   1436: * Sun Jan 25 2004 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7g (RPL/2)
                   1437: - included ncurses is updated to 5.4;
                   1438: - included units is updated to 1.83c;
                   1439: - major bug is fixed in recherche_type() function. With this bug, RPL/2
                   1440: prints 'A/INV(Z+E)+R' when you enter A Z E + inv R + /;
                   1441: - DFT intrinsic is added. It returns the discrete Fourier transform of an
                   1442: array. When the length of each line is 2**n, the result is the same as
                   1443: the result of FFT;
                   1444: - minor bug is discovered and fixed in PUT and PUTI intrinsics when these
                   1445: instructions verify arguments types. It does not affect the result when
                   1446: all arguments are correct.
                   1447: * Sun Oct 19 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7f (RPL/2)
                   1448: - major bug is fixed in evaluation of both EXIT and CYCLE intrinsics. Now,
                   1449: EXIT can be used (as ABORT and KILL) to quit interactive mode of RPL/2;
                   1450: - units is updated to 1.83a release;
                   1451: - formateur_fichier.c is modified to handle unformatted files. This task
                   1452: is not completed.
                   1453: * Mon Aug 25 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7e (RPL/2)
                   1454: - CLUSR is written. It purges all global variables;
                   1455: - BESSEL intrinsic is fixed to allow the use of expressions as arguments;
                   1456: - a major bug was introduced with rpl-4.00pre7d in formateur.c. It appears
                   1457: when an algebraic expression is displayed or printed but does not affect
                   1458: computations. It is now fixed;
                   1459: - gsl is upgraded to 1.4.
                   1460: * Mon Aug 18 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7d (RPL/2)
                   1461: - algebraic expressions are now more readable when they are displayed
                   1462: (less parenthesis);
                   1463: - rplpp is modified to workaround a mistake in 'which' function (seems to appear
                   1464: on Debian distribution, but since cpp is in the default path, RPL/2 works
                   1465: fine...);
                   1466: - NOT is not correctly formatted in formateur.c:
                   1467: Z NOT -> 'NOT Z' but 'A+Z' NOT -> 'NOT A+Z' and 'NOT Z+A' -> 'NOTZ+A'
                   1468: with a NOTZ function !
                   1469: * Sun Aug 10 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7c (RPL/2)
                   1470: - CYCLE is fixed. Now, it is possible to use CYCLE in an expression even
                   1471: if the main loop is in a program;
                   1472: - RPL/2 is tested with efence and valgrind;
                   1473: - configure.in script is modified;
                   1474: - units.c is modified to be built by gcc-3.3. I only have removed a #if 0/#endif
                   1475: structure. I don't know why this code was compiled by gcc-3.3... Maybe
                   1476: another gcc bug...
                   1477: * Fri Jul 25 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7b (RPL/2)
                   1478: - EXIT is fixed. Now, it is possible to use EXIT in an expression when the
                   1479: main loop is in a program;
                   1480: - RPL/2 can take its arguments (and command) on the standard input. Try
                   1481: echo "1 2 3 + *" | rpl -i | grep "^1:" | cut -d ':' -f2
                   1482: - a minor bug in vim syntax file is fixed (CYCLE and EXIT intrinsics);
                   1483: - a minor bug is discovered in analyse_algebrique(). Now, expression
                   1484: such as 'A+Z AND 2' or '(A+Z) AND 2' are correctly parsed.
                   1485: * Mon Jun 16 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7a (RPL/2)
                   1486: - Major bug is fixed in evaluation subroutine. This one only occurs
                   1487: when an error in a user definition called by an expression is caught
                   1488: by an IFERR structure;
                   1489: - EXIT intrinsic can now be used in DO/UNTIL/END or WHILE/REPEAT/END loops;
                   1490: - sequenceur() is now uninterruptible with STOP signal in recherche_type()
                   1491: subroutine;
                   1492: - major bug is fixed in types.c (# xxxxxb) and recherche_instruction_suivante();
                   1493: - GSL exception (underflow) is now caught;
                   1494: - tools/Makefile.am is fixed;
                   1495: - Debian buildpackage script is fixed.
                   1496: * Tue Jun 10 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre7 (RPL/2)
                   1497: All memory leaks issued from the pre6 beta releases seem to be fixed.
                   1498: Build process is improved and vim syntax file and manual pages are updated.
                   1499: * Mon Jun 9 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6l (RPL/2)
                   1500: - RCI and RCIJ intrinsic are added;
                   1501: - BESSEL intrinsic is added. Syntax:
                   1502: 3: type ("J", "K", "I", "Y", "j", "k", "i", "y")
                   1503: 2: order (integer or real)
                   1504: 1: x;
                   1505: - ->Q intrinsic is added;
                   1506: - major bug is fixed in C->R intrinsic;
                   1507: - ROW+ and ROW- are added and tested;
                   1508: - COL+ and COL- are added and tested. Syntax:
                   1509: 3: matrix
                   1510: 2: integer (number of column to be inserted)
                   1511: 1: column matrix to be inserted;
                   1512: - major bug was discovered in interface_gnuplot(). It only occurs when
                   1513: the subroutine reduces the graphical depth. It is now fixed;
                   1514: - Some mistakes are been fixed in vim syntax file;
                   1515: - SX2, SY2 and SXY are added;
                   1516: - SX and SY statistical intrinsics are added;
                   1517: - DEBIAN control file is fixed;
                   1518: - PAPER intrinsic is added. Supported paper formats are now : a4, a5, b5,
                   1519: letter, legal, executive;
                   1520: - PPAR is modified to include current graphic type.
                   1521: * Sun Jun 1 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6k (RPL/2)
                   1522: - SLICESCALE intrinsic is added. Its syntax is
                   1523: { "automatic" nb_of_levels }
                   1524: { "discrete" l1 l2 l3 ... }
                   1525: { "incremental" start incr }
                   1526: { "incremental" start incr end }
                   1527: { "automatic" } (default);
                   1528: - a minor bug (in last stack) is fixed in AXES intrinsic
                   1529: - flag 52 is used to automatically update graphics;
                   1530: - man pages are updated;
                   1531: - evaluation() is modified to perform evaluation of expressions that contain
                   1532: '=';
                   1533: - a minor bug is fixed in AXES intrinsic;
                   1534: - a minor bug is fixed in DRAW intrinsic (2D and 3D graphics were able to
                   1535: appear on the same figure). The same mistake is fixed in DRWS intrinsic;
                   1536: - LAST is disabled in evaluation subroutine (EVAL and ->NUM intrinsics).
                   1537: * Sun May 18 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6j (RPL/2)
                   1538: - SLICE intrinsic is added. It is used to draw 3D graphics as contour lines;
                   1539: - PLOTTER is added to draw statistical clouds with lines;
                   1540: - C and H source files now include vim parameters;
                   1541: - vim syntax file is modified to include new intrinsics;
                   1542: - static archive is modified to include all required libraries needed by
                   1543: RPL/2.
                   1544: * Sun May 4 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6i (RPL/2)
                   1545: - '=' is added and tested;
                   1546: - XCOL and YCOL are added;
                   1547: - a minor bug in analyse_syntaxique() is fixed;
                   1548: - THEN is modified to return an error when ELSE appears in a CASE/THEN/END
                   1549: structure. ELSE is modified to return an error when ELSE appears in
                   1550: an ELSE/END structure;
                   1551: - a major bug is fixed in CYCLE;
                   1552: - EXIT is written. When EXIT appears in a defined loop (FOR or START), the
                   1553: sequencer continues after the end of this loop;
                   1554: - SCLS is added;
                   1555: - DRWS now uses COLS to draw 2D graphics;
                   1556: - PPAR and SPAR are written. SPAR returns a list that contains the
                   1557: size of the statistical matrix (or "UNAVALAIBLE" if there is any
                   1558: statistical variable, or "DISABLED" if its type is not one of the type of
                   1559: a statistical matrix.) and XCOL and YCOL parameters. Warning: [[]] SIZE
                   1560: returns { 1 0 } and it is not a bug, because a null matrix contains _one_
                   1561: null line ! Thus, [[]] STOS SPAR returns { { 1 0 } 1 2 };
                   1562: - EXTERNAL intrinsic is added. Warning: by default, extern functions are
                   1563: disabled. Arguments of EXTERNAL are case sensitive because the external
                   1564: interface is written in C. { ext_sinus } EXTERNAL does not replace the list
                   1565: of known external functions but add the new list to the last. { "all" }
                   1566: EXTERNAL allows all external functions and { "none" } EXTERNAL removes all
                   1567: external names of the known functions;
                   1568: - mkrplso.in is modified.
                   1569: * Sun Apr 20 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6h (RPL/2)
                   1570: - vim syntax file is upgraded;
                   1571: - a minor mistake is fixed in recherche_instruction_suivante();
                   1572: - some minor memory leaks are fixed in recherche_type() function. They only
                   1573: occurs when a syntax error is detected;
                   1574: - #error and #warning preprocessor macros are added;
                   1575: - INCR and DECR are written (with integer or variable argument);
                   1576: - CSWP and RSWP are added and tested;
                   1577: - a minor bug is fixed in analyse.c;
                   1578: - DEBIAN/control is added to build debian package;
                   1579: - SCALE is fixed and improved ("automatic" keyword);
                   1580: - PUTC and PUTR new intrinsics are added.
                   1581: * Sun Apr 13 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6g (RPL/2)
                   1582: - a very minor bug is fixed in VISIT intrinsic. It only occurs when
                   1583: VISIT does not find a name in level 1;
                   1584: - configure.in script is modified to add a new test (--enable-debug
                   1585: flag). Configured with this fleg, RPL/2 will be built with electric-fences;
                   1586: - GETR (get row[s]) and GETC (get column[s]) are added. These new instructions
                   1587: extract a part of a matrix. Syntax: [[ 1 2 3 ][ 2 3 4 ]] { 1 } GETR or
                   1588: 'MATRIX' { 2 2 3 } GETR;
                   1589: - LOGSCALE intrinsic is improved and now, it can be used as
                   1590: { "main" "auxiliary" X Y } LOGSCALE;
                   1591: - SCALE intrinsic is used to fix the limits of a graphic. Its syntax is the
                   1592: same than AXES:
                   1593: { { 60 "ticsonly" 2 } { "automatic" "ticsonly" 10 } } axes
                   1594: { "auxiliary" { 60 "ticsonly" "default" } { "automatic" } } axes
                   1595: { { -10 10 } "automatic" } SCALE.
                   1596: Warning, it is not possible to ask a logarithmic scale with this intrinsic
                   1597: because it changes only the dimension of the screen. To have a logarithmic
                   1598: scale, you must use LOGSCALE intrinsic:
                   1599: { X } LOGSCALE gives a semi-log screen, { "auxiliary" X Y } gives a log-log
                   1600: screen on second scale;
                   1601: - { X X } autoscale and { Y Y } logscale are now invalid;
                   1602: - *D is added (depth multiplication, for 3D graphics);
                   1603: - a new intrinsic (*S) is added. It changes the scale of a graphic (X, Y
                   1604: and Z axes). The result of *S is the same than DUP DUP *H *W *D;
                   1605: - a major bug is fixed in GETI instrinsic when it is used with a name
                   1606: that contains a matrix or a vector (bad upper bounds conditions in
                   1607: incrementation);
                   1608: - DISP intrinsic now uses the 33-th flag. When it is not set
                   1609: (default), a final carriage return is sent to the terminal;
                   1610: - AXES intrinsic only takes a list that can contains the keywork
                   1611: "main" or "auxiliary". Before this modification, this keyword was in
                   1612: the first stack level;
                   1613: - vim syntax file is upgraded;
                   1614: - in appel_gnuplot(), stdin is closed when gnuplot is called with -raise
                   1615: option;
                   1616: - LAST is now disabled in the main loop of INT intrinsic;
                   1617: - expm1 and lnp1 are rewritten to use expm1 and log1p from math.h.
                   1618: * Sun Apr 6 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6f (RPL/2)
                   1619: - a major bug is fixed in evaluation() subroutine. It occurs with DRAW
                   1620: intrinsic when the equation cannot be evaluated (for example 'SIN(X)/X'
                   1621: in 0);
                   1622: - LAST is disabled in the main loop of DRAW intrinsic;
                   1623: - a major bug is fixed in DRAW intrinsic. When an error occurs in the
                   1624: evaluation of an equation, the system stack is returned corrupted to the
                   1625: sequencer;
                   1626: - the same minor bug is fixed in FOR and START. It only occurs when the limits
                   1627: of a loop are not integer or real.
                   1628: * Sun Mar 31 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6e (RPL/2)
                   1629: - the compilation stage aborts with an error message when two definitions
                   1630: have the same name. To improve the compilation() subroutine, I have to
                   1631: add some tests in gestion_variables.c;
                   1632: - recherche_type() subroutine ad some other connex subroutines are improved.
                   1633: Now, some syntax errors about object are caught and do not perform sequencer
                   1634: hangup;
                   1635: - readline is upgraded (minor compilation bug with recent gcc);
                   1636: - Makefile.am's and configure.in scripts are improved.
                   1637: * Fri Mar 14 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6d (RPL/2)
                   1638: - DRWS intrinsic is written. Two datastyles are associated: SCATTER (2D
                   1639: and 3D) and HISTOGRAM (only 2D, but 3 columns are accepted, the third shown
                   1640: the boxwidth, 1 by default);
                   1641: - recherche_type() is rewritten to be faster;
                   1642: - gsl is upgraded (release 1.3);
                   1643: - ncurses is upgraded and patched (release 5.3);
                   1644: - recherche_instruction_suivante() is fixed (string research with included
                   1645: '"') and rewritten to be faster;
                   1646: - appel_gnuplot() is fixed. When no graphic was available, it returned a
                   1647: segfault.
                   1648: * Sun Mar 9 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6c (RPL/2)
                   1649: - RPL/2 is compiled by gcc-3.2.2 and seems to work;
                   1650: - the same minor bug is fixed in REDRAW and DRAX functions;
                   1651: - a minor fix is written in DRAW function (2D and 3D);
                   1652: - AXES intrinsic is improved. Now { { pi "ticsonly" 4 } "automatic" } DRAX
                   1653: is accepted;
                   1654: - a minor bug is fixed in VISIT intrinsic.
                   1655: * Sun Jan 26 2003 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6b (RPL/2)
                   1656: - a minor bug is fixed in evaluation subroutine;
                   1657: - vim syntax file is improved;
                   1658: - DRAW (wireframe section) is fixed. When an error occurs in the evaluation
                   1659: of a 3D-graphic (for example 'SIN(R)/R' with 'R=SQRT(X**2+Y**2)' in X=0 and
                   1660: Y=0), no graph was procuced (it results from a bug in gnuplot, and this fix
                   1661: is a quick and dirty workaround...);
                   1662: - RETURN intrinsic is modified to fix a trouble in interactive mode;
                   1663: - rplconvert is improved.
                   1664: * Sun Dec 22 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6a (RPL/2)
                   1665: - a memory leak is fixed in formateur.c that only occurs when RPL/2 try
                   1666: to print a list that contains a name;
                   1667: - a major bug is fixed in -> intrinsic that only occurs in evaluation case with
                   1668: a algebraic expression (<< 1 -> X 'X+1' >> eval);
                   1669: - vim syntax file is improved;
                   1670: - RPL/2 can now be built by gcc 3.2.1;
                   1671: - "**" can be used in algebraic expression;
                   1672: - DRAW can now plot wireframe (3D) graphics.
                   1673: * Sun Dec 8 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre6 (RPL/2)
                   1674: - ncurses is patched to be compiled by gcc 3.2;
                   1675: - purification_chaine is rewritten to fix a major bug (when 'chaine' is empty);
                   1676: - a major bug is fixed in recherche_instruction_suivante();
                   1677: - minor bug is fixed in rpl-core file. The error message is now correctly
                   1678: written;
                   1679: - minor bug is fixed in analyse_notation_algebrique.c and types.c.
                   1680: Now, an expression such as 'A+' returns an error when it is analyzed;
                   1681: - VISIT intrinsic is added;
                   1682: - a major memory leak is fixed in evaluation.c. This bug rarely occurs in
                   1683: normal mode.
                   1684: * Sun Aug 25 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5e (RPL/2)
                   1685: - an EDIT intrinsic is added;
                   1686: - PRMD intrinsic returns french or english messages;
                   1687: - rpl-core now call LAST intrinsic if the last stack is avalaible. It
                   1688: contains the error message too;
                   1689: - new syntax, ftplugin and indent files are written for vim text editor;
                   1690: - major bug is found and fixed in RCL intrinsic;
                   1691: - major bug is found and fixed in OR intrinsic.
                   1692: * Mon Jul 29 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5d (RPL/2)
                   1693: - ncurses is updated;
                   1694: - minor bug is fixed on PURGE instruction (an error no caught was
                   1695: returned in interactive mode).
                   1696: * Mon Jul 21 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5c (RPL/2)
                   1697: - ASL (arithm. shift left) is added.
                   1698: * Thu Jul 11 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5b (RPL/2)
                   1699: - ncurses is patched;
                   1700: - gsl is added to perform arithmetic operations;
                   1701: - units is patched;
                   1702: - some very minor bugs have been fixed.
                   1703: * Wed May 15 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5a (RPL/2)
                   1704: - ncurses is patched;
                   1705: - RPL/2 can now be built by gcc 3.1;
                   1706: - RDZ is fixed (minor bug).
                   1707: * Sun Apr 21 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre5 (RPL/2)
                   1708: - RPL/2 can now be called from other languages (librpl libraries).
                   1709: * Sun Mar 24 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4h (RPL/2)
                   1710: - ERRN and ERRM can now be used with errors returned by external functions;
                   1711: - readline and ncurses have been updated;
                   1712: - no more bugs have been reported since the rpl-4.00pre4g release.
                   1713: * Wed Feb 20 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4g (RPL/2)
                   1714: - ERRN and ERRM intrinsic functions are written. They return the last
                   1715: error number or message even if errors are caught by an IFERR structure;
                   1716: - a minor bug is fixed in EPSILON intrinsic. Now, 'EPSILON(0)' returns
                   1717: a non null value;
                   1718: - Ncurses is updated.
                   1719: * Mon Feb 18 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4f (RPL/2)
                   1720: Arithmetic intrinsic instructions (- +, -, *, / and **) are improved :
                   1721: 'X' 0 + and 0 'X' + return 'X';
                   1722: 'X' 0 - returns 'X';
                   1723: 'X' 1 * and 1 'X' * return 'X';
                   1724: 'X' 0 * and 0 'X' * returns 0; 
                   1725: 'X' 1 / returns 'X';
                   1726: 'X' 1 ** returns 'X';
                   1727: 'NEG(X)' NEG returns 'X';
                   1728: - autoconf/automake scripts are improved: now, the size of the different types
                   1729: found by configure are used in rpltypes.h (rplconfig.h is written by configure);
                   1730: - rdynamic flag is added in src/Makefile.am. This flag is used in the first
                   1731: makefile, but forgotten in the new process;
                   1732: - Flag 31 is tested before saving any arguments in bibliotheques_externes.c;
                   1733: - POS can now be used on lists;
                   1734: - ELSILON is written. This function returns the smallest real e(x) such as
                   1735: e+abs(x) != abs(x).
                   1736: * Mon Feb 11 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4e (RPL/2)
                   1737: - now, INT intrinsic function can be interrupted;
                   1738: - precision of sommation_vecteur_xxx() subroutines is improved;
                   1739: - new vim syntax file written for vim 6.0.
                   1740: * Mon Feb 04 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4d (RPL/2)
                   1741: - explicit error messages are now printed when the RPL/2 is used in
                   1742: interactive mode;
                   1743: - major bug is fixed in OPEN intrinsic: with 'REPLACE' status, file lock was
                   1744: tested after the file is opened, thus, when the file was locked, it was
                   1745: deleted too!;
                   1746: - configure script is improved (and it seems to be good ;-) );
                   1747: - An --disable-experimental flag is added to the configure script. Thus, even
                   1748: if you compile a beta release, you can compile a stable RPL/2;
                   1749: - new syntax and ftplugin written for vim 6.0.
                   1750: * Wed Jan 30 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4c (RPL/2)
                   1751: - configure script is improved.
                   1752: * Sun Jan 27 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4b (RPL/2)
                   1753: - ncurses now replaces termcap;
                   1754: - CŰme DESPLATS has written a configure script.
                   1755: * Fri Jan 18 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4a (RPL/2)
                   1756: - KIND is added and returns the type of the numerical argument ;
                   1757: - history file is added.
                   1758: * Tue Jan 15 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre4 (RPL/2)
                   1759: - Stable release. Unformatted files are disabled in this release.
                   1760: * Mon Jan 14 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3h (RPL/2)
                   1761: - SIGTSTP (CTRL+Z) is added. In a script, a SIGTSTP signal signifies
                   1762: that the RPL/2 seqencer must stop and must give a prompt. This
                   1763: signal is an asynchonous "HALT" command;
                   1764: - SIGINT (CTRL+C) variables stack corruption is fixed;
                   1765: - IFERR seems to be fixed (in equation evaluation routine);
                   1766: - Memory leak is fixed (ADR object type);
                   1767: - DATE returns both date and hours;
                   1768: - TIME now returns user and system CPU times;
                   1769: - MEM is added.
                   1770: * Thu Jan 10 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3g (RPL/2)
                   1771: - Makefile is improved to support sparc v7 (sun4c), sparc v8 (sun4m) and
                   1772: sparc v9 (sun4u). Now, RPL/2 can be built on i386 (i486 is known as i386),
                   1773: i586, i686, K6, K7, alpha ev4, alpha ev5, alpha ev56, alpha ev6, sparc v7,
                   1774: sparc v8 and sparc v9. Compilation of RPL/2 on my Sun Sparc 2 (sun4c,
                   1775: CPU 4/75, 64 MB, 40 MHz with FPU) is a very great mission :
                   1776: 
                   1777: Newton:[~/rpl/rpl] > time make install
                   1778: ...
                   1779: real    338m39.623s
                   1780: user    324m32.290s
                   1781: sys     10m47.380s
                   1782: Newton:[~/rpl/rpl] >
                   1783: 
                   1784: I don't know if you will compile this language on old worstations, but
                   1785: it is usable ;-) ;
                   1786: - SYSEVAL is improved. An external program can be called without any shell.
                   1787: Thus, even if the sticky bit is set, RPL/2 can not give a shell root when
                   1788: a SYSEVAL command crashes;
                   1789: - minor bug is fixed in recherche_type() (# xxxxb parsing);
                   1790: - presence of bootstrap entry point is verified before launching the
                   1791: sequencer;
                   1792: - minor bug is fixed in formateur_tex() (underscore in mathematical
                   1793: expression);
                   1794: - Lapack is updated.
                   1795: * Thu Jan 3 2002 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3f (RPL/2)
                   1796: - IFERR is now known in an expression, but not usable.
                   1797: * Mon Dec 31 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3e (RPL/2)
                   1798: - several bugs are fixed.
                   1799: * Mon Dec 17 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3d (RPL/2)
                   1800: - major bugfix in file locking.
                   1801: * Fri Dec 14 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3c (RPL/2)
                   1802: - minor fixes is system() call.
                   1803: * Fri Nov 30 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3b (RPL/2)
                   1804: - automatic limitation of the graphical depth due to a limitation (bug ?)
                   1805: of gnuplot.
                   1806: * Mon Nov 19 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3a (RPL/2)
                   1807: - new file temp management.
                   1808: * Sun Nov 18 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre3 (RPL/2)
                   1809: - memory leak is fixed in STO instruction;
                   1810: - minor bug in file management is fixed;
                   1811: - BACKSPACE is added;
                   1812: - VARS is added;
                   1813: - file locks are improved.
                   1814: * Wed Nov 14 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2l (RPL/2)
                   1815: - major bug is fixed (on sparc architecture) and RPL/2 can now run
                   1816: on sparc stations;
                   1817: - INDEP and DEPND are improved;
                   1818: - AXES is added;
                   1819: - WRITE, APPEND and REWIND are added.
                   1820: * Sun Nov 11 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2k (RPL/2)
                   1821: - write is improved ;
                   1822: - major bug is found and fixed in copie_objet() with struct_fichier;
                   1823: - minor bug is fixed in OPEN function;
                   1824: - minor bug is fixed in analyse_syntaxique() subroutine. All commands
                   1825: are analysed before starting their executions.
                   1826: * Thu Nov 8 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2j (RPL/2)
                   1827: - minor bug is fixed in appel_gnuplot();
                   1828: - RPL/2 can work without LANG variable.
                   1829: * Wed Oct 31 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2i (RPL/2)
                   1830: - WAIT function is improved (removing the polling function);
                   1831: - LAST stack is not active (default) when rpl is called without the option -i.
                   1832: In all other cases, LAST stack is active;
                   1833: - Labels can be added on a gnuplot output (function LABEL);
                   1834: - LCD-> and ->LCD are added.
                   1835: * Sun Oct 21 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2h (RPL/2)
                   1836: - minor bug is fixed in TeX output (pi);
                   1837: - new english manual is added.
                   1838: * Wed Oct 16 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2g (RPL/2)
                   1839: - LOCK, WFLOCK and UNLOCK are added. A file is locked when it is opened;
                   1840: - VERSION function is added. It returns the version number of the interpreter;
                   1841: - minor bug is fixed in evaluation subroutine;
                   1842: - english error messages are been fixed.
                   1843: * Tue Oct 09 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2f (RPL/2)
                   1844: - interrupt subroutine is added;
                   1845: - formatted files support is continued.
                   1846: * Sun Sep 30 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2e (RPL/2)
                   1847: - formateur_fichier.c is added to perform formatted files write.
                   1848: * Thu Sep 27 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2d (RPL/2)
                   1849: - minors bugfixes in FIX format in formateur_reel() subroutine;
                   1850: - new manual page in english;
                   1851: - FORMAT intrinsic is added and can read any format for "formatted" file.
                   1852: * Sun Sep 23 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2c (RPL/2)
                   1853: - OPEN, CLOSE, SYNC, INQUIRE, CREATE and DELETE are tested;
                   1854: - a man page in the first manual section is written.
                   1855: * Thu Sep 20 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2b (RPL/2)
                   1856: - major bugfixes in recherche_type() subroutine: sometimes in interactive mode,
                   1857: this routine was be able to forget the last element of a list, a vector or
                   1858: a matrix.
                   1859: * Mon Sep 17 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2a (RPL/2)
                   1860: - OPEN, CLOSE and DELETE are known by the language but not very usable;
                   1861: - minor bugfixes in evaluation routine.
                   1862: * Sun Sep 16 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre2 (RPL/2)
                   1863: - major bugfixes in evaluation routine.
                   1864: * Sat Sep 15 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre1d (RPL/2)
                   1865: - conditional structures can be used in equations.
                   1866: * Fri Sep 14 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre1c (RPL/2)
                   1867: - Minor bugfixes in makefile.
                   1868: * Sat Sep  8 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre1b (RPL/2)
                   1869: - CONVERT is written;
                   1870: - CYCLE, FOR/NEXT, FOR/STEP, START/NEXT, START/STEP, DO/UNTIL/END and
                   1871: WHILE/REPEAT/END can now be used in an equation;
                   1872: - I fix some troubles with evaluation subroutine;
                   1873: - db3 library is added.
                   1874: * Thu Sep  6 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre1a (RPL/2)
                   1875: - add rplconvert and rplunits sources;
                   1876: - add CONVERT definition (but it does not work).
                   1877: * Mon Sep  3 2001 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre1 (RPL/2)
                   1878: - initial public release (GPL).
                   1879: * Thu Apr  2 1998 BERTRAND JoŽl <rpl2@systella.fr> rpl-4.00pre0 (RPL/2)
1.206     bertrand 1880: - RPL is rewritten from scratch and renamed RPL/2.
1.1       bertrand 1881: #* 1992 BERTRAND JoŽl rpl-3.02 (RPL-387)
                   1882: #- minor bugfixes.
                   1883: #* 1991 BERTRAND JoŽl rpl-3.01 (RPL-387)
                   1884: #- arithmetic processor support is added to improve global performances.
                   1885: #* 1991 BERTRAND JoŽl rpl-3.00 (RPL-386)
                   1886: #- idem... but on an i386DX...
                   1887: #* 1990 BERTRAND JoŽl rpl-2 (RPL-6809)
                   1888: #- a new release on a more powerfull processor and with new functions and an
                   1889: #built-in editor. It has been written on a SMT-Goupil G3-6809 running
                   1890: #Flex9 (320 KB of RAM and a graphic card used to draw 512*256 graphics in
                   1891: #8 colors)
                   1892: #* 1989 BERTRAND JoŽl rpl-1 (RPL-6502)
                   1893: #- initial release (only an historic interest) written on an ORIC Atmos 48K.
                   1894: #No graphic was provided.

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