File:  [local] / rpl / ChangeLog
Revision 1.307: download - view: text, annotated - select for diffs - revision graph
Tue Nov 5 15:37:50 2019 UTC (3 months, 2 weeks ago) by bertrand
Branches: MAIN
CVS tags: HEAD
Première version de simplification des expressions. Attention, seules
les additions sont implantées.

    1: * Thu Oct 31 2019 BERTRAND Jol <rpl@systella.fr> rpl-4.1.32 (RPL/2)
    2: - flag 46 is used to simplify expression. When F46 is set, EVAL,
    3: ->NUM automatically simplify expressions. DER always simplificates
    4: expressions;
    5: - giac is patched to be built with builtin CoCoALib.
    6: * Thu Oct 31 2019 BERTRAND Jol <rpl@systella.fr> rpl-4.1.31 (RPL/2)
    7: - RPL/CAS is modified to be built without error by gcc 9.2;
    8: - /tools are upgraded;
    9: - OpenSSL is upgraded to 1.1.1d;
   10: - SYSEVAL now sends signal to child process when RPL/2 catches SIGINT;
   11: - multithreading support is improved (and some bugs have been fixed);
   12: - SYSEVAL now sends data to stdin in a slave thread.
   13: * Sat Feb 2 2019 BERTRAND Jol <rpl@systella.fr> rpl-4.1.30 (RPL/2)
   14: - major bug is fixed in software interrupts subsystem that tried to
   15: lock a cleared mutex;
   16: - deadlock is fixed in SYSEVAL. This intrinsic function entered in
   17: deadlock if stdout/stderr of spawned subprocess was longer than pipe buffer
   18: size;
   19: - segmentation fault is fixed in NEG (on integer matrices);
   20: - CoCoALib is upgraded to avoid a compilaton failure on 32 bits systems;
   21: - SST does not enter anymore in called subroutine.
   22: * Mon Dec 24 2018 BERTRAND Jol <rpl@systella.fr> rpl-4.1.29 (RPL/2)
   23: - sqlite, openssl, ncurses, gsl and gnuplot are upgraded;
   24: - new record type is added. Record is a table extension. Data have been to be
   25: called by name and not by position:
   26: 
   27: RPL/2> <[ "key" "value" ]> record
   28: 
   29: 1: |[ <[ "key"
   30:          "value" ]>
   31:       <[ { }
   32:          { } ]> ]|
   33: 
   34: - records can be used with GET and PUT.
   35: * Thu May 29 2018 BERTRAND Jol <rpl@systella.fr> rpl-4.1.29 (RPL/2)
   36: - backslash can now be used in REGEX intrinsic;
   37: - LINE*(*) is added to format. Now, it is possible to read and write regular
   38: sequential files;
   39: - first table support is added to RPL/C;
   40: - unEscString() and escString() are added in RPL/C.
   41: * Thu May 29 2018 BERTRAND Jol <rpl@systella.fr> rpl-4.1.28 (RPL/2)
   42: - mise  jour de Lapack en 3.8.0;
   43: - mise  jour gnrale de RPL/CAS et des utilitaires dans le rpertoire tools;
   44: - memory corruption is fixed in SPLASH intrinsic;
   45: - remove multiple module rpl_complex from Fortran sources;
   46: - ncurses is upgraded;
   47: - NBRCPUS is added ;
   48: - splash screen is not centered on screen that contains pointer.
   49: * Thu Aug 03 2017 BERTRAND Jol <rpl@systella.fr> rpl-4.1.27 (RPL/2)
   50: - DETACH is fixed and now runs as expected;
   51: - motif$ is reborned;
   52: - '->' can now by used in external names;
   53: - sets$ library is done;
   54: - new types can be created in external libraries;
   55: - major bug is fixed in allocation(). When allocation size was null, there
   56: was a buffer overflow (8 bytes);
   57: - new types can be created and managed in modules (see modules/sets for
   58: example).
   59: * Wed Jun 28 2016 BERTRAND Jol <rpl@systella.fr> rpl-4.1.26 (RPL/2)
   60: - major bug is fixed in READ (FLOW sockets);
   61: - Lapack is upgraded to 3.7.0;
   62: - OpenSSL is upgraded;
   63: - GSL is upgraded to 2.4;
   64: - file is upgraded to 5.29;
   65: - some modifications are done to buld RPL/2 (and modules built with RPL/C) under
   66: Cygwin (Windows 10, 64 bits);
   67: - some symbols are removed from executable;
   68: - readline is upgraded to 7.0;
   69: - OpenSSL symbols are not exported anymore;
   70: - gnuplot is upgraded to 5.0.6.
   71: * Tue Sep 27 2016 BERTRAND Jol <rpl@systella.fr> rpl-4.1.25 (RPL/2)
   72: - ncurses, file, openssl and sqlite are upgraded;
   73: - major bug is fixed in DETACH (race condition and dead lock);
   74: - lot of minor bugs have been fixed in processus management;
   75: - (p)select() is replaced by poll() due to a strange bug in glibc. pselect()
   76: returns a erroneous number of readable devices when max file descriptor is
   77: greater than 1024;
   78: - tools/file-5.25.diff.gz is fixed (against file-5.25 and not 5.11);
   79: - OpenSSL is upgraded and new API is used.
   80: * Tue Mar 01 2016 BERTRAND Jol <rpl@systella.fr> rpl-4.1.24 (RPL/2)
   81: - tools are upgraded (xpm, openssl, ncurses, sqlite, file);
   82: - BSD sockets options are fixed;
   83: - RPL/2 splash screen is upgraded;
   84: - gmp is upgraded to 6.1.0;
   85: - sys_realloc() is added in library to allow reallocation  la C in RPL/C
   86: programs;
   87: - reallocate function is added to rplexternals.h;
   88: - GET, GETI, LIST-> and TABLE-> now evaluate symbolic constants instead of
   89: return associated fonctions in stack;
   90: - { e } 1 get now returns e and not E. Same fix with infinity and i symbolic
   91: constants ;
   92: - GET is fixed and now evaluates names when names are not protected:
   93: 4 'X' sto { X } 1 get returns 4 and not X. Same fix for tables;
   94: - --enable-native flag is added to configure script;
   95: - lapack is upgraded to 3.6.0.
   96: * Thu Nov 26 2015 BERTRAND Jol <rpl@systella.fr> rpl-4.1.23 (RPL/2)
   97: - Giac is upgraded to 1.2.2 and mpfi is added;
   98: - GSL is upgraded to 2.1;
   99: - major bug is fixed in interruption (mutexes failure);
  100: - minor bug is fixed in evaluation():
  101: << 1 'X' sto { X } 'Y' sto 'Y(1)' eval >> returns 1 and
  102: << 1 'X' sto { 'X' } 'Y' sto 'Y(1)' eval >> only returns 'X'.
  103: Same bugfix for tables;
  104: - 4 'X' sto <[ X ]> returns <[ X ]> in both interpreted and compiled mode.
  105: Before this bugfix, it returned <[ 4 ]> in interpreted mode and <[ X ]>
  106: in compiled mode.
  107: * Wed Sep 16 2015 BERTRAND Jol <rpl@systella.fr> rpl-4.1.22 (RPL/2)
  108: - socket options are now forced on socket created by WFSOCK to fix 'KEEP ALIVE'
  109: bug;
  110: - sqlite is upgraded;
  111: - major regressions are fixed in compiler;
  112: - gnuplot is upgraded from 5.0.0 to 5.0.1;
  113: - ncurses is upgraded from 5.9 to 6.0 ;
  114: - major bug is fixed in rpl_malloc(). rpl_malloc(0) crashed with segfault.
  115: * Mon Jun 08 2015 BERTRAND Jol <rpl@systella.fr> rpl-4.1.21 (RPL/2)
  116: - nested function options() is removed from instruction_open() as
  117: LLVM/CLANG does not support this kind of function;
  118: - sqlite and ncurses are upgraded;
  119: - all compilation errors are now printed;
  120: - escaped characters are allowed in LOGGER intrinsic;
  121: - 1 -> Y 'Z' now returns undefined implicit name error.
  122: * Mon Feb 19 2015 BERTRAND Jol <rpl@systella.fr> rpl-4.1.20 (RPL/2)
  123: - minor bug is fixed in evaluation(). When analyse() is called from
  124: evaluation(), RPL/2 always evaluates compiled expression;
  125: - 1 -> X 'X' can be evaluated ('X' is a name and before last patch, only
  126: algebraic expressions were able to be directly evaluated);
  127: - major regression introduced in 4.1.19 is fixed in parser.
  128: << 1 -> X << exp >> >> returned syntax error;
  129: - compilation() now returns an error if a definition name contains invalid
  130: characters instead of BUG();
  131: - zlib is upgraded;
  132: - sqlite and openssl are upgraded;
  133: - new buffercached allocator is added;
  134: - giac is upgraded to 1.1.4;
  135: - Gnuplot is upgraded to 5.0.0.
  136: * Mon Jan 5 2015 BERTRAND Jol <rpl@systella.fr> rpl-4.1.19 (RPL/2)
  137: - EQV is added in algebraic input and output subroutines;
  138: - ncurses and sqlite have been upgraded with last patches;
  139: - openssl is upgraded to 1.0.1j and Gnuplot is upgraded to 4.6.6;
  140: - expression simplification subsystem is rewritten from scratch. Now, it does
  141: not do anything. Only fonctions to convert algebraic expression to and from
  142: q-tree have been written and successfuly tested;
  143: - EQV intrinsic is added;
  144: - major bug is fixed in XOR intrinsic (erroneous truth table with integer
  145: or real arguments);
  146: - parser is upgraded. Now, it is possible to write <[[[3]]]> or {{5}} (without
  147: space) and [[ 3 4 ]]4 catches error;
  148: - major regression is fixed in recherche_type() (complex type);
  149: - shebang paths are modified to be computed by configure script (NetBSD issue);
  150: - ncurses is upgraded.
  151: * Thu Jul 17 2014 BERTRAND Jol <rpl@systella.fr> rpl-4.1.18 (RPL/2)
  152: - major regression is fixed in SysV semaphore emulation subsystem (segfault);
  153: - gmp is upgraded;
  154: - ncurses is upgraded;
  155: - empilement_pile_last() is modified to delete argument from current stack if
  156: it cannot save all arguments (to few arguments error _before_ first call
  157: to depilement() by parent routine).
  158: * Wed Apr 23 2014 BERTRAND Jol <rpl@systella.fr> rpl-4.1.17 (RPL/2)
  159: - semaphores have been removed from s_signaux as POSIX doesn't assure that
  160: semaphores are synchronized between address spaces without msync();
  161: - sqlite is upgraded;
  162: - OpenSSL is upgraded;
  163: - lapack is upgraded to 3.5.0;
  164: - use of uninitialized variables is avoided in FORALL;
  165: - giac is upgraded;
  166: - units is upgraded;
  167: - OpenSSL, sqlite and gnuplot are upgraded;
  168: - major bug is fixed in both FOR and FORALL (segmentation fault if both
  169: instructions are not followed by a name).
  170: * Fri Nov 28 2013 BERTRAND Jol <rpl@systella.fr> rpl-4.1.16 (RPL/2)
  171: - OpenMotif is patched to correctly detect fontconfig;
  172: - sqlite and ncurses are patched;
  173: - rpl.inc is fixed;
  174: - rpl() now sends arguments to RPL/2 subroutine;
  175: - rpl() prototype is fixed (rpl_home is an unsigned char * not an unsigned char
  176: **);
  177: - GSL is upgraded;
  178: - major bug is fixed in READ intrinsic (Unix device).
  179: * Fri Sep 6 2013 BERTRAND Jol <rpl@systella.fr> rpl-4.1.15 (RPL/2)
  180: - RGDL and RGDR (ragged left and ragged right) are added;
  181: - major bug is fixed in initialization (segfault). It only occurs when RPL/2
  182: is built with a forced localization;
  183: - EXIT regression is fixed.
  184: * Fri Jun 21 2013 BERTRAND Jol <rpl@systella.fr> rpl-4.1.14 (RPL/2)
  185: - number of pipes between process is reduced;
  186: - gnuplot is upgraded;
  187: - libiconv is patched to be built with recent glibc (C11);
  188: - some race conditions have been fixed;
  189: - sqlite is upgraded;
  190: - Major regression is fixed in IFERR/END structure;
  191: - Major regression is fixed in evaluation(). Local variables were exported
  192: to called definitions.
  193: * Mon Apr 1 2013 BERTRAND Jol <rpl@systella.fr> rpl-4.1.13 (RPL/2)
  194: - integer overflows have been fixed (NEG, ABS, minus);
  195: - global variables can now be recalled from ATEXIT procedure;
  196: - ATEXIT registered procedure is now executed even if program is stopped by
  197: SIGINT;
  198: - minor bug is fixed in TOKENIZE intrinsic instruction. TOKENIZE did not work on
  199: a copy of input string;
  200: - major bug (segfault) is fixed in liste_variables(). It only occurs
  201: when this function is called with shared variables;
  202: - all internal data are now stored in 64 bits wide integers (even is 32 bits
  203: ABI is selected);
  204: - major bug is fixed in recherche_instruction_suivante(). In some
  205: circumstances, this function can return a spurious error;
  206: - new NATIVE*(*) data format is added. By default, native*(*) is used
  207: to write data without precision loss. It can also be used to write
  208: complex objects like expressions, lists or tables;
  209: - major bug is fixed in formateur(). When INT64_MIN was pushed into stack,
  210: internal value was good but RPL/2 was not able to correctly display
  211: this value. This bug comes from ABS as ABS(INT64_MIN) cannot be represented
  212: in integer. All abs(), fabs() and labs() present in source code have been
  213: checked to avoid this kind of bug;
  214: - unformatted sockets are now usable as unformatted files;
  215: - BACKSPACE now runs on unformatted file;
  216: - major bug is fixed in BACKSPACE that didn't check if '"' characters were
  217: escaped;
  218: - CHARACTER*(n) format now counts escaped characters;
  219: - transliteration is avoid in rpl-core file generation to authorize core
  220: creation even if a transliteration error is caught;
  221: - major bug is fixed in evaluation(). System stack was not correctly
  222: destacked when execution error occurs;
  223: - major bug is fixed in READ (socket interface);
  224: - minor bug is fixed in analyse_flux().
  225: * Wed Feb 27 2013 BERTRAND Jol <rpl@systella.fr> rpl-4.1.12 (RPL/2)
  226: - bug is fixed in recherche_type(). { "\"" } was not evaluated as expected
  227: as inner quote was not escaped;
  228: - CIPHER new intrinsic is added to perform key generation, decryption and
  229: encryption;
  230: - CBC-CMAC digest is added;
  231: - HMAC digest is added;
  232: - DIGEST intrinsic is added;
  233: - signal management is fixed to be usable on NetBSD;
  234: - RPL/CAS autoconfiguration is upgraded;
  235: - sqlite, openssl, giac, gmp ave been upgraded;
  236: - SQLITE support is added in SQLQUERY, SQLCONNECT and SQLDISCONNECT.
  237: * Tue Dec 18 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.11 (RPL/2)
  238: - shared variables are now stored in a tree;
  239: - lapack is upgraded to 3.4.2;
  240: - only giac/src is built in rplcas (giac/Makefile.am is modified);
  241: - gnuplot is upgraded to 4.6.1;
  242: - giac, units and ncurses are upgraded;
  243: - interprocess capabilities are removed when RPL/2 cannot run its initialization
  244: routine to keep operating system as clean as possible;
  245: - sem_wait() has to catch EINTR in thread_surveillance_signaux();
  246: - signal management is rewritten to avoid a strange bug on NetBSD. On NetBSD,
  247: a signal handler can be called within a special thread and not in the
  248: calling thread;
  249: - static variables are now written in a variables tree;
  250: - major bug is fixed in STO intrinsic. STO returns an error when it has
  251: to create a global variable if intrinsic none (default) is set.
  252: * Mon Oct 1 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.10 (RPL/2)
  253: - FORALL intrinsic is added;
  254: - major bug (deadlock) is fixed in CYCLE. Only occurs when CYCLE is called to
  255: interrupt a loop from a subroutine within a compiled programm;
  256: - workaround to avoid strange bug on slow network is written in READ
  257: intrinsic;
  258: - CRITICAL/END structure is added. When program enters in a critical
  259: section, all other threads of the same process sleep until program leaves
  260: critical section.
  261: * Wed Aug 22 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.9 (RPL/2)
  262: - giac is upgraded to 0.9.8;
  263: - ncurses is patched with last patches;
  264: - Sqlite is upgraded to 3.7.13;
  265: - Units is upgraded to 1.89e;
  266: - Lapack is upgraded to 3.4.1;
  267: - LENGTH*(...) format is fixed;
  268: - some patches have been added to build RPL/2 on NetBSD;
  269: - escaped characters are fixed in READ and WRITE operations;
  270: - major bug is fixed in READ intrinsic (on socket). End of file condition
  271: was randomly caught on slow network;
  272: - stdin can now handle espaced characters strings in SYSEVAL;
  273: - --with-gcc-version is added to configure script to force gcc version as
  274: gfortran 4.7 is broken and crashes with segmentation fault.
  275: * Mon May 21 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.8 (RPL/2)
  276: - POLL now accepts more than one descriptor and returns informations
  277: about pollable descriptors;
  278: - SMPHRTRYDECR now takes timeout value instead of returning when semaphore
  279: cannot by decremented;
  280: - signal handlers are fixed to avoid spurious and very rare deadlocks;
  281: - pari is upgraded;
  282: - force CFLAGS for tools/file (-O2 -g) to avoid mmap() error;
  283: - giac, gmp and mpfr have been upgraded.
  284: * Fri Apr 13 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.7 (RPL/2)
  285: - double quote is escaped in INPUT and PROMPT intrinsic functions;
  286: - error is returned (instead of warning) when unavailable intrinsic function
  287: is called;
  288: - lot of minor bugs have been fixed;
  289: - ncurses and file are patched;
  290: - RPL/2 can now be cross compiled (until .deb archive generation);
  291: - all table, vector and matrix dimensions are now treated as unsigned long;
  292: - recherche_type() function is modified to use cached memory;
  293: - gnuplot is upgraded to 4.6.0.
  294: * Wed Feb 29 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.6 (RPL/2)
  295: - serial line support is added to OPEN (STTY options);
  296: - multiline inputs are allowed:
  297: schroedinger:[~/cvs/build/src] > rpl -is
  298: +++RPL/2 (R) version 4.1.6 (Monday 01/30/12, 10:20:38 CET)
  299: +++Copyright (C) 1989  2011, 2012 BERTRAND Jol
  300: 
  301: +++Ce logiciel est un logiciel libre sans aucune garantie de fonctionnement.
  302: +++Pour plus de dtails, utilisez la commande 'warranty'.
  303: 
  304: RPL/2> [[ 1 2 3 ]
  305: + 001> [ 4 5 6 ]
  306: + 002> [ 7 8 9 ]]
  307: 
  308: 1: [[ 1 2 3 ]
  309:     [ 4 5 6 ]
  310:     [ 7 8 9 ]]
  311: RPL/2> [[ 1 23 ]
  312: + 001> [ 4 5 6 ]]
  313: +++Erreur : Erreur de syntaxe [19267]
  314: 
  315: 1: [[ 1 2 3 ]
  316:     [ 4 5 6 ]
  317:     [ 7 8 9 ]]
  318: RPL/2> [ 1 2 3
  319: + 001> annulation
  320: RPL/2> abort
  321: 
  322: 'annulation' is done by pressing CTRL+g, and abort by CTRL+d on empty line.
  323: * Tue Jan 17 2012 BERTRAND Jol <rpl@systella.fr> rpl-4.1.5 (RPL/2)
  324: - ncurses, sqlite and openssl have been upgraded;
  325: - major bug is fixed in ** (integer integer **) when first argument is equal to
  326: -1;
  327: - major bug is fixed in signal management. With new signal management, thread or
  328: process were not signalized anymore by POSIX signals. If a thread or a process
  329: was sleeping, it was not interrupted;
  330: - minor bug is fixed in OPEN intrinsic. Now, when a socket is open, its default
  331: adress is set to 0.0.0.0;
  332: - new rule is added to main makefile (make debian) to build deb package;
  333: - new benchmark (Xeon W3520 @ 2.67GHz) :
  334: schroedinger:[~/cvs/bench] > ./bench.rpl 
  335: +++RPL/2 (R) version 4.1.5 (Friday 12/02/11, 12:18:23 CET)
  336: +++Copyright (C) 1989  2010, 2011 BERTRAND Jol
  337: Number of scalar operations per second and per core : 3809121.83444626
  338: schroedinger:[~/cvs/bench] > 
  339: - recherche_type() did not convert huge integer in real. Now,
  340: 18446744072742037448 is converted into real as value cannot be stored in
  341: RPL/2 integer type;
  342: - WFSOCK is modified to handle unconnected sockets;
  343: - REGEX is added;
  344: - RESTART is added (execvp() on main RPL/2 process);
  345: - copie_objet() now returns same MTX (struct_mutex) even if caller wait for
  346: a real copy. Now, struct_mutex contains locks owner. On Linux or Solaris (for
  347: example), it is possible to lock mutex from a thread and unlock the same mutex
  348: from another thread. On NetBSD, system crashes.
  349: * Mon Nov 21 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.4 (RPL/2)
  350: - rplcas/@GIAC@/src/config.h is removed to avoid compilation bug. config.h
  351: written by configure script was overloaded by src/config.h;
  352: - lot of compilation warnings have been fixed;
  353: - lapack and blas have been upgraded;
  354: - ncurses, sqlite and giac have been upgraded;
  355: - LCASE, UCASE, POS and SUB now handle escape characters;
  356: - major bug is fixed in INT (numerical integration was unusable as type
  357: checking condition was always false);
  358: - SIZE, CHR and NUM can handle strings with escape characters;
  359: - lot of patches for Android and OS/2;
  360: - configure.ac is improved to remove operating systems special cases.
  361: - major bug is fixed in DRWS (SDAT was not used...);
  362: - lists, and integer, real and complex numbers can now be written in
  363: unformatted files;
  364: - rplawk makefile is fixed to avoid build process bug. Warning, with these
  365: modifications, sources tree has to be writable.
  366: * Wed Sep 21 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.3 (RPL/2)
  367: - Linux port, MacOS X port and xBSD ports are tested and fully fonctionnal;
  368: - libsigsegv is added;
  369: - OpenMotif is added;
  370: - all internal signal handlers are rewritten to avoid POSIX signal usage
  371: and to be async signal safe;
  372: - SIGSEGV signal handler is rewritten;
  373: - SREV intrinsic is added.
  374: * Tue Aug 9 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.2 (RPL/2)
  375: - I have fixed a lot of bugs in gpp preprocessor (and sent gpp 3.0 to official
  376: gpp developer). Now, macros like
  377: 
  378:     #define foo foo bar
  379: 
  380: is evaluated without recursion. gpp 2.24 crashed on stack overflow.
  381: - LIMIT is added;
  382: - Now, undefined values like 'infinity/infinity' are computed. Result is
  383: undef constant;
  384: - infinity constant is added.
  385: * Sun Jul 24 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.1 (RPL/2)
  386: - VERSION now returns OS type, architecture and ABI;
  387: - configure script is updated. New flags :
  388:     --with-32bits-abi
  389:     --with-64bits-abi
  390:     --with-rplcas
  391: Please not that RPL/CAS is not built by default;
  392: - Lapack is upgraded to 3.3.1.
  393: * Mon Jun 27 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0 (RPL/2)
  394: - New stable release.
  395: * Fri Jun 22 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0.prerelease.4 (RPL/2)
  396: - some minor changes have been done in instruction_int() to accept new argument
  397: types;
  398: - interface_cas.cpp now catchs exceptions returned by giac.
  399: * Fri Jun 24 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0.prerelease.3 (RPL/2)
  400: - INT intrinsic now uses RPLCAS to compute symbolic integration;
  401: - minor bug is fixed in INTRINSIC function. Now, this function gives same
  402: result with ou without -p switch.
  403: * Wed Jun 22 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0.prerelease.2 (RPL/2)
  404: - memory caching is added to new variable tree.
  405: * Tue Jun 21 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0.prerelease.1 (RPL/2)
  406: - SPAWN is now usable with new variable management;
  407: - MEM is rewritten;
  408: - PRUSR is rewritten;
  409: - merge 4_0 branch into HEAD;
  410: - CLUSR is rewritten;
  411: - -p flag is now usable;
  412: - New benchmark:
  413: cauchy:[~/rpl/bench] > ./bench.rpl 
  414: +++RPL/2 (R) version 4.1.0.prerelease.1 (lundi 20/06/2011, 23:00:45 CEST)
  415: +++Copyright (C) 1989  2010, 2011 BERTRAND Jol
  416: Number of scalar operations per second and per core : 2625369.22710792
  417: * Mon Jun 20 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.1.0.prerelease.0 (RPL/2)
  418: - New variable management is written. Please note that -p flag does not work
  419: and all multithread/multitask capabilities have been disabled until this
  420: new subsystem shall be validated.
  421: * Thu May 09 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.0.23 (RPL/2)
  422: - major bug is fixed in STD format (1E7 sq prints 1);
  423: - major bug is fixed in READ intrinsic (socket). This bug was introduced
  424: by a new feature in glibc.
  425: * Thu Apr 14 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.0.22 (RPL/2)
  426: - by default, RPL/2 uses "NONE" IMPLICIT when it's started in batch mode and
  427: "ALL" IMPLICIT when it runs in interactive mode;
  428: - when "NONE" IMPLICIT is set, STO intrinsic raises an error when it is used
  429: to create or modify a global variable. Now, with "NONE" IMPLICIT, you have
  430: to use SAVE to manipulate global variables;
  431: - replace erroneous TAB by TBL in evaluation() and formateur_fichier()
  432: subroutines;
  433: - fix major memory access violation in evaluation subroutine. Only occurs
  434: when 'X(i,j)' is evaluated on a matrix and when (i,j) points out of bounds;
  435: - fix major bug in evaluation subroutine. 'X(i)' returns execution error
  436: when X was a vector or a table.
  437: * Sun Apr 04 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.0.21 (RPL/2)
  438: - Gnuplot is upgraded;
  439: - flag 34 is now used to enable or disable control character evaluation;
  440: - major bug is fixed in P->R intrinsic function when argument type is
  441: complex and degree mode is set;
  442: - L->T and T->L are added;
  443: - OLD filetype is fixed;
  444: - FLOW socket support is added;
  445: - FLOW sequential files are added;
  446: - new escape sequence is added to handle flow files (\x + hexadecimal code).
  447: Known escape sequences are \", \b, \n, \t, \x?? and \\.
  448: * Sun Mar 06 2011 BERTRAND Jol <rpl@systella.fr> rpl-4.0.20 (RPL/2)
  449: - Ncurses is upgraded to 5.8;
  450: - ALARM is fixed by filling isdst field;
  451: - catch ECONNRESET in write intrinsic to return an execution error instead of
  452: system one;
  453: - fix a typo in HELP intrinsic;
  454: - Openssl is upgraded to 1.0.0d, sqlite to 3.7.5 and readline to 6.2;
  455: - Lapack is upgraded to 3.3.0;
  456: - libmtmalloc is now default Solaris allocator;
  457: - ncurses is upgraded;
  458: - regression introduced by 4.0.19 is fixed in signal management.
  459: Interruption1() could be called from itself and raises bus error (on sparc) or
  460: segmentation fault;
  461: - sqlite is upgraded to 3.7.4;
  462: - OpenSSL is upgraded to 1.0.0c;
  463: - syntax error is correctly checked ( (2+,0) does not crash RPL/2 anymore);
  464: - characters are tested in recherche_type() to avoid names like '12+';
  465: - gnuplot is upgraded to 4.4.2 due to major bugs.
  466: * Thu Sep 23 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.19 (RPL/2)
  467: - due to a very strange bug I've only seen on Solaris, ptmalloc3 is removed.
  468: Solaris libresolv randomly uses ptmalloc3 and system allocator and makes heap
  469: corruption. As internal memory management have been improved, a best fit
  470: allocator like ptmalloc3 is not required anymore;
  471: - gnuplot is upgraded to 4.4.1;
  472: - deadlock is fixed in signal handlers: same mutex was used in standard
  473: subroutines (without protected sections by sigprocmask() or pthread_sigmask())
  474: and signal handlers. A new signal handler specific mutex is added;
  475: - minor bug is fixed in evaluation() subroutine. In { X 0 PI }, PI is a function
  476: that has to be evaluated by ->NUM;
  477: - rplfile build process is modify to be sure that rplfile is not modified
  478: after rpl build stage (to be sure that rplfile checksum is not modified after
  479: rpl compilation);
  480: - AWK is replaced by rplawk. rplawk is original awk written by Brian Kernighan,
  481: modified to remove yacc code and renamed;
  482: - some workarounds have been written to not use buggy klibc SystemV IPCS.
  483: ABORT now works on eComStation;
  484: - sqlite is upgraded to 3.7.2;
  485: - bug is fixed in software interrupts. When both process have different PID,
  486: parent process was not interrupted if it is not group master process. To fix
  487: this bug, SIGINJECT signal is not sent by child process but by control thread
  488: in parent process;
  489: - minor bug is fixed in data injection (POKE) that does not work as expected
  490: when child process is protected by NRPROC.
  491: * Thu Aug 26 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.18 (RPL/2)
  492: - --enable-sysv-sems is added to configure script to use SystemV semaphores
  493: functions instead of POSIX functions. This function is disabled or forced on
  494: systems that does not provide correct POSIX or SysV semaphores subsystem;
  495: - a dirty but not quick patch is written to workaround broken siginfo
  496: structures. This patch has been successfully tested. It uses a segment of
  497: shared memory (Posix or SysV) and some semaphores (Posix or SysV) by process
  498: (Unix PID);
  499: - some OpenBSD's hacks are added;
  500: - broken siginfo->si_pid field is now checked by configure script;
  501: - SWI now sends SIGCONT to interrupted process to start interrupt without delay;
  502: - random generator is cloned by SPAWN;
  503: - in transliteration subroutine : '\r' is added after all '\n' in OS/2 port;
  504: - getaddrinfo is hardcoded when host system does not provide getaddrinfo
  505: or freeaddrinfo;
  506: - RPL/2 can now use SystemV semaphores when POSIX semaphores are unavailable;
  507: - major bug is fixed in CHR intrinsic when obtained character is not printable;
  508: - Lapack is upgraded to 3.2.2;
  509: - OS/2 (eComStation 2.0 with EMX 0.9d) support is added;
  510: - TOKENIZE is now able to convert escape sequences;
  511: - ATPOKE and CLRATPOKE new intrinsics are added;
  512: - --enable-full-static configure flag is added. With this flag, mysql and
  513: postgresql libraries are statically linked in rpl executable;
  514: - units Makefile is modified to avoid readline and ncurses usages;
  515: - sqlite is upgraded to 3.7.0.1;
  516: - units is upgraded to 1.88;
  517: - another major bug is fixed in the same variable creation subroutine.
  518: Level 0 and 1 variables adresses were swapped when a global variable masked
  519: a name of RPL/2 routine;
  520: - major bug is fixed in global variable creation subroutine. When a global
  521: variable was created and when a local variable existed with the same name,
  522: computed address of global variable was wrong;
  523: - src/Makefile.am is modified to avoid a bug on several systems. libptmalloc3
  524: is forced in front of all libraries.
  525: * Tue Jul 13 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.17 (RPL/2)
  526: - BACKTRACE intrinsic is added;
  527: - major bug is fixed in SELECT/DEFAULT/END conditional structure. Only occurs
  528: when this structure is included in IFERR/THEN/END structure and when an error is
  529: caught;
  530: - major bug is fixed in analyse() subroutine. When evaluation() returned error
  531: in a compiled program, analyse() caught this error twice and randomly aborted
  532: with a segmentation error;
  533: - TRIM and TOKENIZE replace both '\n' and '\t' by regular spaces;
  534: - ATEXIT subroutine begins with an implicit CSTOP to avoid multiple stop
  535: signals;
  536: - memory leak is fixed in ROW+. It only occurs when a row is added to an empty
  537: matrix.
  538: * Thu Jun 24 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.16 (RPL/2)
  539: - minor bug is fixed in evaluation() subroutine. With this patch, same program
  540: returns same result with or without -p flag;
  541: - ncurses 5.7 is upgraded to 20100619;
  542: - openssl is upgraded to 1.0.0a;
  543: - interrupt stacks are now FIFO instead of LIFO;
  544: - debug memory allocation subroutines are improved to run in multithreaded
  545: programs;
  546: - some memory leaks are fixed in process management (SPAWN and DETACH);
  547: - version verification is added to shared objects;
  548: - -D_GNU_SOURCE is added to ptmalloc3 makefile to avoid a major bug on 64 bits
  549: linux (false mremap() prototype);
  550: - major bug is fixed in rpliconv. getc() returns an int, not a unsigned char.
  551: * Sun May 23 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.15 (RPL/2)
  552: - all '-' are replaced by '_' in random generator list;
  553: - minor memory leak is fixed in OPEN intrinsic (socket);
  554: - major bug is fixed in IFERR structure. Only occurs in compiled program;
  555: - major bug is fixed in copie_objet() and liberation(). Only concerns
  556: format in FCH (file descriptor) and SCK (socket descriptor);
  557: - debug routines are improved;
  558: - PROCID is added;
  559: - MEMLOCK and MEMUNLOCK are added. MEMLOCK forces a process to remain in memory
  560: and to not use swap;
  561: - major bug is fixed in sql support. SQL connections were closed in all chield
  562: process;
  563: - standard allocator (malloc()/free()) is replaced by ptmalloc3 due to some bugs
  564: discovered in Solaris thread safe allocators (libmalloc and libumem) that
  565: are first fit class allocators. Solaris libmtmalloc works better and is
  566: a best fit class allocator but its performance is poor than ptmalloc3
  567: performance;
  568: - major bug is fixed in ROW+ intrinsic (new row was not added where it
  569: should);
  570: - minor bugs are fixed in interruptions.c (semaphores values when error is
  571: caught);
  572: - major bug is fixed in STOP intrinsic. STOP was unable to stop any process
  573: created by SPAWN;
  574: - SIGFABORT is added. When process receives SIGFSTOP, it tries to execute
  575: ATEXIT. If it receives SIGFABORT, it does not;
  576: - ONEXIT is renamed in ATEXIT;
  577: - ONEXIT new intrinsic is added.
  578: * Wed Apr 21 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.14 (RPL/2)
  579: - major bug is fixed in static and shared variables initialization subroutine.
  580: This bug only occurs when RPL/2 tries to create a shared or static variable
  581: from an expression;
  582: - major bug is fixed in copie_etat_processus(). A field that contains
  583: information about shared variable was not copied to new processus structure;
  584: - some little memory leaks are fixed in evaluation(), recherche_type() and
  585: sequenceur(). They only occured when syntax error were caught;
  586: - IMPLICIT causes execution error instead system error;
  587: - Hurd support is improved but currently broken because Hurd does not support
  588: SIG_INFO. Work in progress;
  589: - OpenBSD specific support is removed from sources;
  590: - support for Mac OS X and Windows/Cygwin is added.
  591: * Wed Apr 07 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.13 (RPL/2)
  592: - implicit names can now be disabled by new IMPLICIT intrinsic:
  593: cauchy:[~/cvs/test] > cat implicit.rpl
  594: #!/usr/local/bin/rpl -sp
  595: TEST
  596: <<
  597:     "none" implicit
  598: 
  599:     1 -> Z
  600:     <<
  601:         Z disp
  602:         'Z' disp
  603:     >>
  604: 
  605:     'Z' disp
  606:     Z disp // Undefined
  607: >>
  608: 
  609: cauchy:[~/cvs/test] > LANG=C ./implicit.rpl
  610: +++RPL/2 (R) version 4.0.13 (Wednesday 04/07/10, 13:57:44 CEST)
  611: +++Copyright (C) 1989 to 2009, 2010 BERTRAND Joel
  612: 1
  613: 'Z'
  614: 'Z'
  615: +++System : Invalid implicit name [6631]
  616: cauchy:[~/cvs/test] > 
  617: 
  618: RPL/2 aborts because the last Z is undefined and not protected by ''.
  619: By default, implicit is set to "ALL";
  620: - sqlite is upgraded to 3.6.23.1;
  621: - openssl is upgraded to 1.0.0;
  622: - major bug is fixed in RETURN intrinsic. It only occurs in evaluation
  623: subroutine;
  624: - table variable can now be sorted by SORT;
  625: - some regressions between libtool 1.x and 2.x are fixed by workarouds in
  626: Makefiles;
  627: - -a command line option analyzes program (structure and syntax) and
  628: sends preprocessor output to standard output. This option is used by
  629: rplc (RPL/2 compiler).
  630: * Tue Mar 09 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.12 (RPL/2)
  631: - in formatted file, string format returned a variable length string even if
  632: format was 'CHARACTER*(n)' (n characters string). Now, 'CHARACTER*(*)' returns
  633: a variable length string and 'CHARACTER*(n)' a fixed length string;
  634: - keyed access files support is added. Currently, only formatted files are
  635: supported;
  636: - direct access files support is added. Currenlty, these files can only be used
  637: in formatted mode;
  638: - virtual variables are now writte in UTF-8 and all special characters
  639: in string are escaped;
  640: - all formatted files are now converted into UTF-8;
  641: - all file and unix socket names created by RPL/2 are now UTF-8 compliant;
  642: - RPL/2 tools (rpliconv, rplfile, rplpp and rplconvert) are now checked before
  643: each execution (md5 and sha1 sums) to enhance security. If one of these tools
  644: have been modified between RPL/2 compilation and current execution, RPL/2 aborts
  645: on a non recoverable system error;
  646: - openssl and sqlite3 libraries are added;
  647: - RPL_HOME env variable is added. When RPL/2 is called from librpl, this
  648: variable indicates RPL/2 root directory. If it is not set, root path
  649: is given by configure script (d_exec_path);
  650: * Thu Mar 03 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.11 (RPL/2)
  651: - configure.in and makefile.am's are modified to add Cygwin support. Interix
  652: support is broken;
  653: - memory leak is fixed in recherche_type();
  654: - TeX files are now written in UTF-8 even default locale differs;
  655: - minor bug is fixed in ->STR (escaped characters);
  656: - minor bug is fixed in ->Q intrinsic. Resultat is returned as integer
  657: fraction intead real one;
  658: - SIGN now returns (0,0) instead (nan,nan) when complex argument is null;
  659: - Makefile.am are modified to authorize parallel builds;
  660: - minor bug is fixed in CR intrinsic. CR sends a carriage return to printer
  661: and writes warning to standard output;
  662: * Wed Feb 10 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.10 (RPL/2)
  663: - escape codes are now converted in formateur(), not in recherche_type() to
  664: avoid a minor bug in EDIT and VISIT intrinsics;
  665: - minor bug is fixed in formateur_reel();
  666: - file-5.03 is patched to avoid bus error on systems that require memory
  667: alignment;
  668: - minor bug is fixed in evaluation(). Error returned by RPL/C external functions
  669: were able to be avoided by evaluation routine.
  670: * Tue Jan 26 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.9 (RPL/2)
  671: - New benchmark on same hardware than old one :
  672: cauchy:[~/rpl/bench] > ./bench.rpl 
  673: +++RPL/2 (R) version 4.0.9 (samedi 23/01/2010, 18:06:08 CET)
  674: +++Copyright (C) 1989  2009, 2010 BERTRAND Jol
  675: Number of scalar operations per second and per core : 2383016
  676: 
  677: - PULPRFL does not abort on BUG() but on execution error;
  678: - TRIM, REPL and TOKENIZE are added;
  679: - sockets options are now set before bind();
  680: - shutdown() is added to all connected sockets;
  681: - minor bug is fixed in SUB intrinsic (segfault when SUB is called with
  682: list argument and inexistant elements).
  683: * Fri Jan 08 2010 BERTRAND Jol <rpl@systella.fr> rpl-4.0.8 (RPL/2)
  684: - minor bug is fixed in DAEMON intrinsic. When a program was daemonized, all
  685: signals sent to main process were not caught because DAEMON did not replace
  686: old pid by new one;
  687: - major bug is fixed in IFERR/THEN/ELSE/END. Only occurs in expression
  688: evaluation when an error is reported from a subroutine in another subroutine.
  689: For example, error was not caught in following program when it is executed with
  690: -p option :
  691:     TEST << iferr TEST2 then end >>
  692:     TEST2 << 0 inv >>
  693: - major bug is fixed in variable management. Some local variables were
  694: seen as global ones;
  695: - major bug is fixed in rplcore. Rplcore entered in dead lock when
  696: script file contains a multibyte character;
  697: - IN intrinsic is added;
  698: - major bug is fixed in SAME intrinsic : << 1 >> DUP SAME and 'E' DUP SAME
  699: returned false ;
  700: - major bug is fixed in RETURN intrinsic. It only occurs in compiled
  701: programs;
  702: - major bug is fixed in NEG intrinsic. NEG did not make a copy of its arguments;
  703: - regression is fixed in compilation(). "\\" was analysed as '"' '\' '\"' and
  704: strings were never closed;
  705: - some bugs have been fixed in file management;
  706: - RPL/2 can now be run on EBCDIC systems (OS/390);
  707: - major bug is fixed in -A command line option (NULL character is missing);
  708: - minor bug is fixed in rpliconv and RECODE intrinsic. All transliterations are
  709: made by blocks (1024 bytes). When an incomplete multibyte sequence is
  710: encountered at end of block, subroutine aborts with an execution error;
  711: - major bug is fixed in OPEN (TCP/IPv4 sockets).
  712: * Mon Nov 30 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.7 (RPL/2)
  713: - DISP now locks stdout;
  714: - rpliconv is added to replace standard iconv provided by operating system.
  715: Indeed, conversion between different encodages requires transliteration
  716: that is not offered by some iconv utility;
  717: - CURRENC and RECODE intrinsics have been written to allow strings conversions;
  718: - bug is fixed in SYSEVAL. When execvp() returns (for example when arg[0] can
  719: not be found), SYSEVAL enters in a dead lock;
  720: - fprintf is replaced by some functions that allow transliterations between
  721: locales;
  722: - '"' can now be used in strings ("\"");
  723: - iconv is called with -c in preprocessor stage. It is done to write
  724: CGI scripts with RPL/2 because locale charset is set to ANSI_X3.4-1968;
  725: - double free is fixed in liberation() (type SQL, only occurs when locale is
  726: set);
  727: - LOCALIZATION, UCASE and LCASE are added;
  728: - major bug is fixed in EXIT intrinsic that was able to return a false
  729: execution error in compiled scripts (only in DO/UNTIL and REPEAT/WHILE loops);
  730: - major bug is fixed in wrapper_instruction_intrinseque(). When intrinsic() was
  731: used in onLoading from shared library, USE was pushed on stack as algebraic
  732: expression;
  733: - libiconv is upgraded to 1.13.1;
  734: - gnuplot is upgraded to 4.2.6;
  735: - gsl is upgraded to 1.13.
  736: * Mon Sep 28 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.6 (RPL/2)
  737: - pipe() is overwritten by a macro to avoid a system error. Communication
  738: between process are done with pipes and these pipes are managed by a
  739: specific asynchrone thread. If a script try to create more threads than
  740: management thread can destroy, you can quickly achieve maximum number of
  741: opened files and pipe() shall return a system error. This macro tries to create
  742: pipes. If pipe() function returns an error, macro waits and retries. If
  743: number of retries is greater than a hardcoded value, macro returns an error;
  744: - major bug (deadlock) is fixed in process and thread management. I hope
  745: this bug shall be the last one;
  746: - major bug is fixed in DET intrinsic (determinant was computed without LU
  747: diagonalization);
  748: - SWAPCNTXT is added;
  749: - minor bug is fixed in Makefile.am (licences rule).
  750: * Wed Sep 09 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.5 (RPL/2)
  751: - some bugfixes are added in process management;
  752: - all process management is rewritten to avoid usage of defunct process
  753: or thread number;
  754: - new major bug is fixed in interruptions.c. Sometimes, when retrait_thread()
  755: was called before a pending interruption5 (SIGFSTOP), signal handler uses
  756: a freed semaphore and corrupts heap;
  757: - CLRERR is added to erase previous errors;
  758: - ERRN and ERRM return exception message and number;
  759: - major bug is fixed in interruptions.c. All signal are now bufferised
  760: when semaphore_liste_threads is null to avoid deadlock. This bug only
  761: occured when STOP was sent to a dying thread or process (when this thread or
  762: process was running retrait_thread());
  763: - matrix rank is computed before matrix inversion;
  764: - file locks are added to stdin and stdout. stderr is not locked because
  765: all messages written by signal handlers are sent to stderr;
  766: - configure.in script is modified to test gcc version and avoid a bug in
  767: gcc older than 4.4;
  768: - some benchmarks have been done :
  769: 
  770: cauchy:[~/rpl/bench] > ./bench.rpl 
  771: +++RPL/2 (R) version 4.0.5 (mardi 04/08/2009, 18:23:07 CEST)
  772: +++Copyright (C) 1989  2008, 2009 BERTRAND Jol
  773: Number of scalar operations per second and per core : 2109867
  774: 
  775: Workstation :
  776: cauchy:[~/rpl/build] > uname -a
  777: Linux cauchy 2.6.30.1 #1 SMP PREEMPT Thu Jul 16 09:49:46 2009 x86_64 GNU/Linux
  778: cauchy:[~/rpl/build] > cat /proc/cpuinfo | grep "model name"
  779: model name      : Intel(R) Core(TM)2 Duo CPU     T7500  @ 2.20GHz
  780: model name      : Intel(R) Core(TM)2 Duo CPU     T7500  @ 2.20GHz
  781: cauchy:[~/rpl/build] > gfortran -v 2>&1 | grep "gcc version"
  782: gcc version 4.3.3 (Debian 4.3.3-14) 
  783: cauchy:[~/rpl/build] >
  784: 
  785: - SVL and SVD are added;
  786: - COND and RANK are added;
  787: - DIAG-> and ->DIAG are added;
  788: - major bug is fixed in DET intrinsic. DET is rewritten to avoid usage of
  789: eigenvalues. In a first time, matrix rank is estimated to force determinant
  790: to zero if matrix is rank deficient. If not, a PLU decomposition is done to
  791: compute determinant;
  792: - QR matrix decomposition is added;
  793: - LQ matrix decomposition is added;
  794: - Fortran90 files are rewritten to use Fortran2003 bind(C) statement and
  795: Fortran preprocessor;
  796: - default compilation options are now -Wall -Wextra -Wno-pointer-sign
  797: -Wno-unused-parameter;
  798: - all mathematical exceptions are now signaled by exceptions instead of
  799: execution error;
  800: - minor bug is fixed in both CSTOP and RSTOP intrinsics. Without this fix, you
  801: can call twice CSTOP without RSTOP;
  802: - named semaphore support is added (CRSMPHR, CLRSMPHR, SMHRDECR, SMPHRINCR,
  803: SMPHRTRYDECR, SMPHGETV).
  804: * Fri Jul 24 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.4 (RPL/2)
  805: - semaphore is added in interruptions.c to avoid segmentation fault when STOP
  806: signal is sent to a dying thread. Some mutexes are replaced by semaphores too
  807: to be used in signal handlers;
  808: - major bug (memory corruption) is fixed in COL- intrinsic;
  809: - minor bug is fixed in ALARM and WAIT. These temporisations stopped when a
  810: software interrupt was caught;
  811: - rplpp man page is added.
  812: * Fri Jul 17 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.3 (RPL/2)
  813: - minor bug is fixed in WRITE (SIGPIPE is ignored to catch error without
  814: process termination);
  815: - major bug is fixed in FUSE intrinsic (FUSE kills itself and do not kill
  816: its parent);
  817: - a mutex to protect fork() syscall is added;
  818: - all mutexes are unlocked after fork() in DETACH;
  819: - minor bug (double free corruption) is fixed in CLOSE intrinsic;
  820: - major bug is fixed in lecture_pipe when a nullified list is sent into a pipe;
  821: - WORKDIR intrinsic is added;
  822: - Level 0 variables are shared between all threads without copy. Indeed,
  823: there variables are not modifiable and only contains static user definitions;
  824: - branches prediction is added in THEN, ELSE, ELSEIF and REPEAT intrinsics;
  825: - FORTRAN 77 file management subroutines are rewritten in pure C due to
  826: FORTRAN string management. C/FORTRAN 77 string interfaces are broken
  827: in some cases (gcc/gfortran/libc/OS and arch conjonction);
  828: - a memory leak is fixed in REMOVE intrinsic;
  829: - major bug is fixed in MySQL driver (segfault due to a bug in mysql_init()
  830: and due to a libmysqlclient that is not thread safe).
  831: * Wen Jun 10 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.2 (RPL/2)
  832: - new enhanced allocator is written for regular variables, static variables and
  833: shared variables;
  834: - major bug is fixed in src/interruptions.c. This file did not compile
  835: when SQL support was not enabled;
  836: - new allocator is written for system stack and last stack;
  837: - --enable-profile flag is added to configure script. When this flag is
  838: enabled, rpl is built with -pg option;
  839: - SIGFSTP (from Solaris'TERMIO) is caught. On Solaris 10, all process receive
  840: SIGFSTP (with a nullified siginfo structure) instead of SIGHUP when control
  841: process is killed;
  842: - abs() macro is modified to avoid multiple evaluation. Your C compiler has to
  843: know typeof() intrinsic function. This function is not standard but exists
  844: under Sun Studio, gcc, and maybe some others compilers. If this function does
  845: not exist on your compiler, you can change its definition by old one in
  846: src/rpl.h;
  847: - fflush() can now be interrupted by signal (SunOS);
  848: - fflush(NULL) is called before all fork() occurrences;
  849: - generators returned by RDGN help are sorted;
  850: - Lapack is now 3.2.1.
  851: * Mon May 18 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.1 (RPL/2)
  852: - bug is fixed in src/generateurs_aleatoires.awk. It only occurs when RPL/2 is
  853: built under Solaris.
  854: * Wed May 5 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0 (RPL/2)
  855: - major bug is fixed in matrix inversion (due to an inversion between pointer
  856: and object copies);
  857: - RDGN is added to use some different random number generators. See HELP RDGN;
  858: - code analysis is rewritten from scratch to be more efficient and mode
  859: expandable;
  860: - minor bug (segfault in interruption1) is fixed. It only occurs on Solaris
  861: that can returns a nullified siginfo pointer when SIGINT is sent by kernel
  862: keyboard driver;
  863: - gnuplot is now 4.2.5;
  864: - readline is upgraded to 6.0;
  865: - file is upgraded to 5.0;
  866: - Signal handlers are rewritten to send signal to main thread when a signal
  867: is send from an external process;
  868: - configure.in is modified to avoid a libc bug on Solaris (free() can enter in
  869: deadlock when a huge amount of threads is launched);
  870: - minor bug is fixed in boath START and FOR intrinsic. Only occurs when
  871: arguments types are unsupported;
  872: - PLOT instrinsic is added (usage: LINE and MARK do not draw anything. All
  873: data are buffered. PLOT is used to draw these objects.);
  874: - MARK instrinsic is added;
  875: - new allocator mechanism is written;
  876: - some regression bugs have been fixed, some memory leaks too.
  877: * Wed Jan 28 2009 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.9 (RPL/2)
  878: - an estimation of future stack elements is added to avoid some costly memory
  879: allocations. This function has a positive impact on execution speed;
  880: - PSHPRFL and PULPRFL have been added;
  881: - RPL/2 can be built on Solaris 64 bits with some minor scripts alterations.
  882: See README for more explanations;
  883: - MTXSTATUS intrinsic is added;
  884: - YIELD intrinsic is added;
  885: - ERRM is fixed. In some cases, ERRM uses some uninitialized pointers;
  886: - SHARED and PRIVATE intrinsics have been added. A shared variable is a
  887: static variable that is shared by multiple threads;
  888: - '->' intrinsic is improved. All object copies have been avoided;
  889: - -n flag is added to catch HUP signal. stderr and stdout are redirected
  890: to a file, stdin is redirected to /dev/null when control process is killed;
  891: - a mutex is added to each object (before this modification,
  892: RPL/2 used a global mutex and performances in multithreaded programs were very
  893: poor.);
  894: - ALARM is now interruptible;
  895: - both PUT and PUTI intrinsics are improved and do not copy list and table
  896: when nombre_occurrences == 1;
  897: - COPY intrinsic is added. Argument (that can be pointed from some objects)
  898: is replaced by a new copy of itself;
  899: - memory leak is fixed in sequenceur(). It only occurs when an execution error
  900: is caught from interactive mode;
  901: - mutexes have been added (CRMTX, CLRMTX, MTXLOCK, MTXUNLOCK);
  902: - new mutex type is added;
  903: - profile statistics have been added. See -P option;
  904: - major bug is fixed in analyse_syntaxique();
  905: - new SQL type is added;
  906: - due to a trouble in libpq in multithreaded context, SQL intrinsic is split
  907: in three new intrinsics : SQLCONNECT, SQLQUERY and SQLDISCONNECT. Please note
  908: that all programs that worked with old SQL intrinsic can now work with
  909: SQLQUERY. With all new programs, you can open a real connection to databases;
  910: - NRPROC is added. This new intrinsic is used to catch error from child
  911: process. Without NRPROC, any errors returned by child process cause
  912: main process to abort;
  913: - SPAWN is added. This new intrinsic is used to launch a new thread (DETACH
  914: starts a new process). There are no mutexes in RPL/2 because all spawned process
  915: use specific context. Nevertheless, shared variables and associated mutexes
  916: should be added;
  917: - -D flag and DAEMONIZE intrinsic have been added;
  918: - REPEAT, THEN, ELSE and ELSEIF intrinsics are rewritten to be more efficient;
  919: - autoconf script is modified to handle mysql and postgresql on non standard
  920: directories;
  921: - -t flag is fixed ('\0' is missing...);
  922: - SWI and SEND pipes have been modified to be more robust on systems where
  923: getpid() can return (pid_t) -1 or (pid_t) -2 value;
  924: - major bug is fixed in REPEAT intrinsic. Only occurs in compiled mode;
  925: - all but jump variables are removed from source. All signal handlers now
  926: use encapsulated variables and signals are caught by thread;
  927: - major bug is discovered in ->LCD. Both LCD-> and ->LCD have been fixed;
  928: - NEWPLANE is added;
  929: - LINE is added;
  930: - DGTIZ is added;
  931: - major bug is fixed in ROW-> intrinsic (comes from new garbage collector);
  932: - lot of multiprocessing related bugs have been fixed; That was a huge work but
  933: it's done. Data integrity is now respected during transmission (POKE, SEND and
  934: SWI);
  935: - ITRACE is added. This intrinsic is only used to debug internal structures and
  936: should not be used in regular programs;
  937: - SWISTATUS is written;
  938: - WFACK is written;
  939: - rplcore files are now able to handle compilation errors;
  940: - rplcore files are now able to handle evaluation and interruption errors;
  941: - SORT can now be used on table;
  942: - tables can now be sent by POKE and SEND instrinsics;
  943: - software interrupts do not inherit IFERR controls;
  944: - LOGGER intrinsic is added;
  945: - All WF* intrinsics but WFSOCK are made interruptible;
  946: - ISWI intrinsic is added. Current interrupt is marked as 'interruptible';
  947: - tables can be used with SAME intrinsic;
  948: - minor bug is fixed in recherche_variable(). Only occurs when an error
  949: is caught;
  950: - external functions can now be used in expressions;
  951: - major bug (deadlock) is fixed in WFPOKE intrinsic;
  952: - some mistakes have been fixed under Solaris;
  953: - major bug is fixed in RETURN intrinsic (only occurs when evaluation and
  954: program modes are mixed);
  955: - major bug (dead lock) is fixed in gestion_processus.c;
  956: - major bug is fixed in WFPROC;
  957: - rplc, rpllink and mkrplso manpages are added;
  958: - rpltags tool and manpage are added;
  959: - WFLOCK is fixed;
  960: - RPL/2 kills now all process on error;
  961: - major bug (segfault) is fixed in REMOVE intrinsic.
  962: * Mon Jul 28 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.8 (RPL/2)
  963: - configure script is modified to check mysql and postgresql libraries
  964: on all standard locations. Tested and works on FreeBSD, Solaris and Linux
  965: Debian;
  966: - Tables are allowed in eval ( <[ 1 ]> 't' sto 't(1)' eval );
  967: - ->TABLE and TABLE-> intrinsics are added;
  968: - major bug is fixed in recherche_type(). Only occurs when rpl executes
  969: precompiled scripts;
  970: - new type is added: table with <[ ]> delimiters:
  971: RPL/2> { 2 3 2 } crtab
  972: 
  973: 1: <[ <[ <[ { }
  974:             { } ]>
  975:          <[ { }
  976:             { } ]>
  977:          <[ { }
  978:             { } ]> ]>
  979:       <[ <[ { }
  980:             { } ]>
  981:          <[ { }
  982:             { } ]>
  983:          <[ { }
  984:             { } ]> ]> ]>
  985: 
  986: CRTAB new intrinsic creates a regular table. By default, all elements are
  987: nullified lists;
  988: - rplexternals.h is modified and improved;
  989: - GNU File (renamed as rplfile) cannot be built due to a bug in libtoolize and
  990: configure script.
  991: * Mon Jun 23 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.7 (RPL/2)
  992: - libiconv is added (iconv library exists on some systems but implemantations
  993: differ and RPL/2 can crash);
  994: - --enable-encoding is added to configure script to force system encoding.
  995: Enconding detection does not work on OpenBSD;
  996: - internal file utility is shipped and used to avoid xBSD file mistakes;
  997: - GSL 1.11 and gnuplot 4.2.3 are now used;
  998: - src/Makefile.am is modified to built RPL/2 ons Solaris 10/sparc;
  999: - all but user's messages are written on stderr;
 1000: - DUPCNTXT and DROPCNTXT are added to handle more efficiently contexts;
 1001: - SCHED is added. Whit SCHED, you can limit CPU ressource by RPL/2 process;
 1002: - FUSE, RFUSE and CLRFUSE have been added;
 1003: - new bug discovered on NetBSD. sigpending() does not return any signal, thus
 1004: DETACH intrinsic enters in a definitive dead lock. I have no idea to write a
 1005: workaround for this major bug. Nevertheless, all others capabilities seems to
 1006: work fine;
 1007: - '->' is modified to return error when program tries to initialiaze two
 1008: variables with the same name like
 1009: 1 0 -> I I << ... >>;
 1010: - CSTOP and RSTOP have been added (catch and release stop signal);
 1011: - CONTINUE is added to continue a pending process halted by SUSPEND;
 1012: - SUSPEND is modified to be stopped by SIGFSTOP;
 1013: - src/Makefile.am is modified to avoid //TRANSLIT flag on systems that don't
 1014: support GNU iconv;
 1015: - configure.in script is modified to avoid bugs when --with-postgresql and
 1016: --with-mysql are specified;
 1017: - TRNC is written;
 1018: - minor bug is fixed in both IFT and IFTE. Returned expression has to be
 1019: evaluated.
 1020: * Fri Apr 11 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.6 (RPL/2)
 1021: - SIGPIPE signal handler is modified to avoid abort process when POKE tries
 1022: to write data into a pipe without reader;
 1023: - major bug is fixed in RETURN intrinsic. When RETURN was called from a detached
 1024: process without -p modifier, it can send an ABORT signal instead a KILL one;
 1025: - PEEK, POKE and WFPOKE new intrinsics are written;
 1026: - major bug due to new garbage collector is fixed in rplexternals.h (double free
 1027: corruption);
 1028: - CLRCNTXT is added (clear contexts);
 1029: - VERIFY intrinsic is written;
 1030: - PSHCNTXT and PULCNTXT are added (PSHCNTXT pushes context on an
 1031: internal contexts stack, PULCNTXT pulls contexts from this internal stack).
 1032: Main usages of these intrinsics are in conjonction with IFERR or with
 1033: software interrupts;
 1034: - HEAD, TAIL and REVLIST intrinsics are added;
 1035: - function pointers have been added to function description;
 1036: - new analyse() routine is written. All instrinsics are now in a N-tree;
 1037: - software interrupts have been fixed;
 1038: - multitasking capabilities have been modified to be usable on NetBSD. All real
 1039: time signals have been removed;
 1040: - major bugs are fixed in multitasking (mutex trouble _and_ segmentation fault);
 1041: - minor bug is fixed in STR->. STR-> could return a system error instead an
 1042: execution one;
 1043: - first bug due to new garbage collector is fixed in '+' ({ } { } +) and in
 1044: '-' intrinsics;
 1045: - PostgreSQL support is written.
 1046: * Mon Mar 17 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.5 (RPL/2)
 1047: - locale can now be specified in SQL intrinsic :
 1048: { "mysql:iso-8859-1" "server" "database" ... };
 1049: - major bug is fixed un analyse_algebrique(). When DISP printed an algebraic
 1050: object, 'DISP()' was pushed in stack;
 1051: - same major bug is fixed in <, >, <=, >= and <>;
 1052: - major bug fixed in formateur() (segfault when a symbol is used without "'");
 1053: - major bug is fixed in DUPN intrinsic;
 1054: - when software interrupt (SWI) is evaluated, SWI pushs process id on stack
 1055: before starting interrupt evaluation;
 1056: - -f parameter is added when iconv is called;
 1057: - as old file program was bugged, a new option is added to configure script.
 1058: When configure is called with --disable-encoding-autodetection, make does not
 1059: try to detect source encoding. Please, do not use if RPL/2 can be built
 1060: without this option !
 1061: - new garbage collector (and more efficient) is written;
 1062: - configure script is modified to be usable on NetBSD 4.0, but as NetBSD does
 1063: not support real time signals, RPL/2 cannot use multitasking functions;
 1064: - error returned by preprocessor are now catched by RPL/2;
 1065: - -p option is added. With this option, all scripts are compiled before
 1066: RPL/2 starts evaluation. HALT cannot be used with -p, but all programs run
 1067: 40% faster;
 1068: - read and write operations in pipe() are rewritten to be sure that such
 1069: operations are atomic;
 1070: - minor bug is fixed in LOGSCALE. With {} LOGSCALE, all scales have to be
 1071: linear;
 1072: - major bug is fixed in gestion_processus.c (some pipes were not closed).
 1073: * Sat Jan 5 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.4 (RPL/2)
 1074: - major bugs have been fixed in software interrupt management.
 1075: * Fri Jan 4 2008 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.3 (RPL/2)
 1076: - JDATE and RDATE are written;
 1077: - minor bug (segfault) is fixed in EXSUB. It only occurs when EXSUB is executed
 1078: with wrong arguments;
 1079: - KILL now kills current process, ABORT kills program;
 1080: - software interrupts support is added (SWI, WFSWI, SWILOCK, SWIUNLOCK,
 1081: SWIQUEUE, STOSWI, RCLSWI, CLRSWI);
 1082: - major bug is fixed in SQL intrinsic (argument types);
 1083: - system stack is now written in core file;
 1084: - ALARM is added;
 1085: - nanosleep() now replaces sleep() and usleep() system calls;
 1086: - _GNU_SOURCE is added to rpl.h.
 1087: * Fri Nov 30 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.2 (RPL/2)
 1088: - License is changed. Now RPL/2 license is CeCILL (GPL compliant);
 1089: - EXGET adn EXSUB are added;
 1090: - minor bug is fixed in recherche_type(). { <<} has to return an error.
 1091: '<<' and '>>' are both functions _and_ delimiters. Thus { IF } is
 1092: acceptable, but {>> } isn't;
 1093: - GSL is now 1.10, gnuplot 4.2.2 and units 1.87;
 1094: - OBGET and OBSUB intrinsics are added;
 1095: - src/Makefile.am minor bug is fixed (make clean deleted src/rpl.xpm);
 1096: - WAIT intrinsic is modified to use sleep() and usleep() if delay is
 1097: greater than one second. On some systems, usleep argument must be lower
 1098: than 1E6;
 1099: - numeric and character formats are now tested;
 1100: - -A flag is added. -A is used to give command line parameters to main
 1101: routine. Example:
 1102: rayleigh:[~/rpl-4.0.0.prerelease.2/examples] > ./test3.rpl -A "<< X sin >>"
 1103: +++RPL/2 version 4.0.0.prerelease.2 (vendredi 05.10.2007, 19:03:01 CEST)
 1104: +++Copyright (C) 1989  2006, 2007 BERTRAND Jol
 1105: << 'X' SIN >>
 1106: rayleigh:[~/rpl-4.0.0.prerelease.2/examples] > cat test3.rpl 
 1107: #!/usr/local/bin/rpl -s
 1108: 
 1109: TEST
 1110: <<
 1111:     disp
 1112: >>
 1113: - minor bug (segfault) is fixed in encart() routine (splash screen). Child
 1114: process ended with segfault due to a mistake in Motif widget cleaning
 1115: process;
 1116: - major bug is fixed in DETACH intrinsic. Child process were locked when
 1117: they were started with a locked mutex that comes from its father;
 1118: - ctrl+C can now kill all child process;
 1119: - WFPROC and WFDATA are rewritten;
 1120: - RETURN is fixed to be usable in detached process;
 1121: - HALT is not exported to child process;
 1122: - FLOW filetype is added;
 1123: - Makefiles are modified to support gcc-4.2 and gfortran-4.2;
 1124: - socket support (Unix, IPv4, IPv6, STREAM, DATAGRAM, ROBUST DATAGRAM,
 1125: SEQUENTIAL DATAGRAM, RAW) is added. Warning: IPv6 sockets have not been tested
 1126: because I don't have any IPv6 compliant server, but they should work.
 1127: * Mon Sep 10 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.1 (RPL/2)
 1128: - library management is rewritten from scratch. EXTERNAL is removed and
 1129: EXTERNALS is added. Now, all exported symbols are sent to RPL/2 when
 1130: library is loaded;
 1131: - OPEN arguments are changed;
 1132: - EXTERNAL now checks availability of external functions;
 1133: - number of arguments is verified in analyse_algebrique().
 1134: 'SIN(A+X,2)' is now refused because SIN requires only one argument;
 1135: - all but lapack symbols are exported from librpl with librpl, f77 or f90
 1136: prefix;
 1137: - minor bug is fixed in formateur() (AND and OR requires parenthesis);
 1138: - rplexternals.h header file is added; Now, it is very easy to write
 1139: external functions;
 1140: - memory leak is fixed in analyse_algebrique();
 1141: - minor bug (symbole flag) is fixed in sequenceur.c and types.c;
 1142: - temp file was not removed when an error occurs in EDIT or VISIT;
 1143: - 'name' should not returned a function ("FCT" object);
 1144: - -rdynamic is added to src/Makefile.am.
 1145: * Mon Jul 23 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.0.0.prerelease.0 (RPL/2)
 1146: - Major bug is fixed in interface_tex.c. When there are errors in latex
 1147: file, latex command waits for input on its command line;
 1148: - major bug is fixed in tex.h (multiline strings);
 1149: - examples subdir is added;
 1150: - major bug is fixed in recherche_variable(). When an expression is evaluated
 1151: in a function, all variables set in this function must be visible in
 1152: expression. Thus, << I -> 3 << << I >> eval >> must return 3, not 'I';
 1153: - LAST stack is saved in rplcore;
 1154: - major bug is fixed in ->HMS. It only occurs when argument type is not
 1155: integer or real;
 1156: - major bug (segfault) is fixed when rpl is called with empty file;
 1157: - libtool support is removed. Two new scripts (rplc and rpllink) are provided
 1158: to use librpl.a;
 1159: - automake scripts are rewritten to avoid a misconfiguration of librpl.a
 1160: when -j make option is used;
 1161: - trace output now contains PID;
 1162: - rpl-core is renamed in rpl-code-$PID;
 1163: - rplc and rpllink scripts can now sompile and build C and Fortran
 1164: executables with librpl.a;
 1165: - New classification, only a working simplification() routine is
 1166: required to announce 4.0.0.final;
 1167: - librpl entry point is modified to return results as strings array;
 1168: - -S option is added;
 1169: - due to a major bug in libtool, libtool is removed from autoconf/automake
 1170: scripts;
 1171: - VERSION is modified to return a list.
 1172: * Tue Jul 17 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8x (RPL/2)
 1173: - major regression bug is fixed in PRINT due to mistake in latex pathes;
 1174: - gnuplot does not have to be built if --disable-embedded-gnuplot is set;
 1175: - new prompt ("RPL/2> ") is used for interactive mode;
 1176: - ARCCOS, ARCSIN, ARCTG, ARGCH, ARGSH, ARGTH, CH, SH, TH and TG intrinsics
 1177: are removed, because all of these intrinsics have two forms. ARCCOS is
 1178: the same than ACOS, TAN=TG, COSH=CH. Please adapt your scripts;
 1179: - gnuplot compilation does not have to be done when disable-gnuplot is set;
 1180: - major bug is fixed in RECV that avoid usage of multitasking.
 1181: * Tue Jul 10 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8w (RPL/2)
 1182: - False error (system error) was reported by recherche_type();
 1183: - recherche_type() returns syntax error if a list is included in
 1184: an algebraic expression;
 1185: - --enable-debug is modified. Now, return can be defined to print
 1186: on stdout its position in source code (line and function);
 1187: - minor bug is fixed in recherche_type(). Don't forget that space
 1188: are not significant in algebraic expression:
 1189: '12 3+ 12    X' is the same expression than '123+12X';
 1190: - src/Makefile.am is modified to avoid double compilation process;
 1191: - --enable-final-run-path is added to configure.in script;
 1192: - STATIC is modified to declare static variables in expression. Warning: static
 1193: variables used in expressions are deleted when evaluation of this expression
 1194: ends;
 1195: - MEM does not report static variable sizes;
 1196: - minor bug is fixed in HELP intrinsic. When the last instruction was not
 1197: known, HELP function was pushed in operational stack. HELP did not work
 1198: when there were space on input line.
 1199: * Mon May 28 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8v (RPL/2)
 1200: - DATE is modified: reduced julian days is replaced by fraction part
 1201: of julian days. Old field used by julian days is now integer part of julian
 1202: days;
 1203: - CONVERT intrinsic is rewritten to accept absolute path in popen;
 1204: - automake scripts are modified to delete src/lock file if build process aborts;
 1205: - rplargs.h directly includes rpl.h;
 1206: - absolute pathes are added to all external program files (rplplot, rplpp...);
 1207: - intrinsic functions are case sensitive. External functions are case
 1208: unsensitive. A minor bug is fixed in recherche_type() because all external
 1209: functions were case unsensitive when they were evaluated from RPN expressions;
 1210: - HELP function is rewritten to be more friendly (a la OpenVMS);
 1211: - external wrapper (rplplot) is written to force usage of gnuplot provided
 1212: by RPL/2 if it is built during build process. If this build does not exist,
 1213: it tries to launch regular gnuplot;
 1214: - gnuplot is added to source tree to avoid some trouble between preinstalled
 1215: gnuplot and release used by RPL/2. This addition to source tree is
 1216: required by some incompatibility between gnuplot releases;
 1217: - Lapack is upgraded to 3.1.1 release;
 1218: - GSL is upgraded to 1.9 revision;
 1219: - RPL_TMP_PATH env variable is added to specify the path of tempfiles. If
 1220: it is not set, /tmp is used. If /tmp is not writable, /var/tmp is used. If
 1221: not, ./ but RPL/2 can hang with a fatal error if this last location is
 1222: not writable;
 1223: - major regression is fixed in SYSEVAL intrinsic due to introduction of
 1224: error scrutation.
 1225: * Sat Mar 24 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8u (RPL/2)
 1226: - SYSEVAL is modified to return an error when execvp() syscall cannot
 1227: execute its arguments;
 1228: - -hard-float sparc option is remove from mkrplso;
 1229: - major bug is fixed in SQL intrinsic that hangs when query did not return
 1230: any values (for exemple INSERT);
 1231: - escape sequences can be used in SYSEVAL argument like "echo \"string\""
 1232: SYSEVAL;
 1233: - graphic and PostScript outputs are now cleared in child process;
 1234: - locales are now used by preprocessor;
 1235: - major bug is fixed in impression_tex(). PRINT did not work due to a bug
 1236: introduced by multitasking code;
 1237: - SORT can now use name as its argument.
 1238: * Sun Jan 21 2007 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8t (RPL/2)
 1239: - Variable management has been rewritten and some tests have been done. Now,
 1240: it is possible to execute:
 1241: 
 1242: #!/usr/local/bin/rpl -sc
 1243: 
 1244: TEST
 1245: <<
 1246:     1 1000 start VAR_S VAR_S2 next
 1247: >>
 1248: 
 1249: VAR_S
 1250: <<
 1251:     static 3 -> C << C disp 'C' incr if C 10 > then 'C' volatile end >>
 1252: >>
 1253: 
 1254: VAR_S2
 1255: <<
 1256:     static 3 -> C << C disp 'C' decr >>
 1257: >>
 1258: 
 1259: - configure.in script is added in lapack subtree;
 1260: - VARS is modified to display variables status (LOCKED/UNLOCKED and
 1261: STATIC/VOLATILE/PARAMETER/VARIABLE);
 1262: - STATIC and VOLATILE intrinsics are added to specify static variables. A
 1263: static variable can be transformed into volatile with VOLATILE.
 1264: With STATIC, next variables created by '->' are static;
 1265: - PROTECT and UNPROTECT are added to protect variables against write
 1266: or purge actions. New PARAMETER and VARIABLE intrinsics are modified
 1267: versions of PROTECT and UNPROTECT that only deal with global variables
 1268: (see RCL/SAVE);
 1269: - variable management routines have been rewritten. The new ones are
 1270: uncompatible with the old ones. Before these changes, a local variable
 1271: was exported to a child subroutine, but cannot be modified into this
 1272: child subroutine. Now, a local variable is accessible only in its subroutine;
 1273: - SAVE intrinsic is added to manipulate global variables;
 1274: - SUSPEND is written. RPL/2 waits for a SIGCONT signal;
 1275: - SORT, COL->, ->COL, ROW->, ROW-> intrinsics are written;
 1276: - Makefile.am are improved;
 1277: - minor bug is fixed in ->list and ->array. Without any argument, these
 1278: intrinsic only send a SIGSEGV;
 1279: - ncurses is updated to release 5.6;
 1280: - lapack is updated to 3.1.0.
 1281: * Sun Dec 31 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8s (RPL/2)
 1282: - default CFLAGS/FFLAGS/FCFLAGS are modified due to a bug in gcc-sparc64
 1283: that avoid a complete build;
 1284: - CTRL+Z and CTRL+C signals only perform actions on main process;
 1285: - major bugs are fixed in multitasking capabilities (some mistakes with
 1286: mutexes and several terminated child process cannot be closed by the
 1287: operating system);
 1288: - minor bug fixed in SCLS (mistake between main and auxiliary axes);
 1289: - variables are now written in rpl-core file;
 1290: - NEG is modified to return 0 instead -0 when its argument is real or complex
 1291: number;
 1292: - ROW+ intrinsic can now be used on empty matrix without dimension error:
 1293: [[]] 1 [[ 1 2 ]] row+;
 1294: - major bug is fixed in SUB intrinsic. It only occurs with lists when
 1295: it tries to returns invalid elements like { } 1 2 sub;
 1296: - major bug is fixed in ROW- intrinsic;
 1297: - major bug is fixed in ROW+ intrinsic.
 1298: * Sat Dec 02 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8r (RPL/2)
 1299: - creation_nom_fichier() is rewritten to force all process to create
 1300: different file names;
 1301: - RANLUX is removed to use GSL library and avoid a bug in gfortran-4.1;
 1302: - readline-5.2 and units-1.86 are now used;
 1303: - SEQUENCE statement is added in fonctions_speciales.f90 to fix a build
 1304: failure.
 1305: * Mon Oct 23 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8q (RPL/2)
 1306: - wfproc is rewritten to avoid a dead lock;
 1307: - major mistake is fixed in both sommation_vecteur_reel() and
 1308: sommation_vecteur_complexe();
 1309: - multitasking is rewritten from scratch to fix some mistakes with
 1310: multithreading. DETACH, SEND and RECV now use four real time signals to
 1311: perform a better task synchronization;
 1312: - some bugs introduced by locales specific compilations are fixed;
 1313: - major memory corruption is fixed in DEPND;
 1314: - HELP intrinsic is modified to print a classified output.
 1315: * Mon Aug 12 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8p (RPL/2)
 1316: - major memory leak is fixed in DETACH intrinsic. Files were closed by
 1317: both childs and parent;
 1318: - bug that avoids usage of Motif is fixed in configure.in;
 1319: - makefile's are modified to build RPL/2 with other locale than ISO-8859;
 1320: - db is removed from source tree due to some compilation troubles (db's
 1321: autoconf script is broken);
 1322: - sdb is removed from source tree due to some memory leaks and some troubles
 1323: with its configure script. New SQL routines are written, but only MYSQL
 1324: subsystem is available. Now, SQL can be used without memory leak;
 1325: - major bug is fixed in evaluation() subroutine. Value of error flag
 1326: was not returned in some cases;
 1327: - FACT intrinsic does not accept real arguments anymore due to the new intrinsic
 1328: GAMMA;
 1329: - GAMMA intrinsic is added (complex function) ;
 1330: - autoconf/automake scripts are modified to compile F90 sources;
 1331: - src/distributions.f is replaced by src/distributions.f90. All Numerical
 1332: Recipes references are avoided to use GSL;
 1333: - GSL is upgraded to 1.8 release;
 1334: - -lz is added in src/Makefile.am to fix a mistake in sparc32.
 1335: * Mon Apr 10 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8o (RPL/2)
 1336: - fft.f is removed. Now FFT intrinsic uses dft subroutine;
 1337: - Sparc64 optimizations are modified. Now gcc-4.0 can be used to build RPL/2 on
 1338: Sparc64. Same modifications are done on sparc32;
 1339: - major bug are fixed in both PLOTTER and HISTOGRAM intrinsics
 1340: (interface with GNUplot).
 1341: - major bugs are fixed in USE/REMOVE intrinsics (system stack corruption);
 1342: - corruption of last stack is fixed in mclrin (only occurs when an error is
 1343: caught);
 1344: - major bug (in a malloc condition) is fixed in derivation().
 1345: * Tue Jan 07 2006 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8n (RPL/2)
 1346: - configure script and makefiles are modified to be usable with automake
 1347: 1.9.6 (GNU), libtool 1.5.20 (GNU) and autoconf 2.59 (GNU).
 1348: - gestion_fichiers() prototype is modified to be built by gfortran. Now,
 1349: gfortran is the default compiler for FORTRAN code included in RPL/2;
 1350: - libdb is added to perform indexed file access;
 1351: - SQL interfaces are added (SQL intrinsic). Only mysql is supported;
 1352: - minor bug is discovered and fixed in matrix multiplication (precision);
 1353: - rpl.spec.in and debian directory are deleted due to some mistakes in the
 1354: scripts required to build packages.
 1355: * Tue Nov 15 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8m (RPL/2)
 1356: - major bug is fixed in IFERR/THEN/(ELSE)/END structure. It occured when an
 1357: error is caught before a regular IF/THEN/(ELSE)/END structure in
 1358: IFERR/THEN/(ELSE)/END structure;
 1359: - chmod 755 debian/rules is done by makefile;
 1360: - major bug is fixed in recherche_instruction_suivante():
 1361: +++"123 " str->
 1362: +++Erreur : Argument invalide pour la commande << "123 " str-> >>
 1363: Before this fix, it was impossible to use a command line that ends with spaces.
 1364: * Sat Oct 29 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8l (RPL/2)
 1365: - SELECT/CASE/DEFAULT/END is modified. Now, it is impossible to write:
 1366: SELECT
 1367:     <case>
 1368:     CASE <test> THEN <expr> END
 1369:     ...
 1370:     DEFAULT
 1371:     DEFAULT <- two DEFAULT's
 1372: END
 1373: 
 1374: or
 1375: 
 1376: SELECT
 1377:     <case>
 1378:     CASE <test> THEN <expr> END
 1379:     ...
 1380:     DEFAULT
 1381:     ...
 1382:     CASE <test> THEN <expr> END <- CASE statement after DEFAULT
 1383: END
 1384: - major bug is fixed (in (unsigned char) getc()). It only occurs when RPL/2 is
 1385: built with gcc-4.0.
 1386: - configure.in is modified to be usable with gcc-4.0.
 1387: * Mon Oct 3 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8k (RPL/2)
 1388: - segmentation fault occurs in both PROMPT and INPUT when readline returns
 1389: NULL (ctrl^D). This trouble is now fixed;
 1390: - major bug is fixed in DATE intrinsic (julian days and reduced julian days);
 1391: - stderr of rplpp is now caught;
 1392: - SYSEVAL is modified to use stdin, stdout and stderr:
 1393: ESSAI
 1394: <<
 1395:     // Only stdout and stderr
 1396:     "ls" dup disp syseval
 1397:     clmf
 1398:     // Now with stdin ("zer\naze\n")
 1399:     { "cat" "zer" "aze" } dup disp syseval
 1400:     clmf
 1401: >>
 1402: - GSL is upgraded to 1.7.
 1403: * Thu Sep 29 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8j (RPL/2)
 1404: - SYSEVAL is modified. It now returns stdout and stderr in a list;
 1405: - minor memory leak is fixed in recherche_instruction_suivante() subroutine.
 1406: * Thu Aug 4 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8i (RPL/2)
 1407: - internal file descriptors are modified to be usable with DUMP intrinsic;
 1408: - VARS intrinsic is modified and now prints value of variables.
 1409: * Thu Jul 21 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8h (RPL/2)
 1410: - units is upgraded to 1.85 release;
 1411: - -d flag is added in command line. Don't use this flag if you don't know
 1412: what you do! It is only used to debug internal memory allocations;
 1413: - internal pointers (ADR objects) are printed as 64 bits pointers to be usable
 1414: on 64 bits wide architectures.
 1415: * Sat apr 16 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8g (RPL/2)
 1416: - DUMP is rewritten to be portable. It works, but without shared libraries,
 1417: printer file, graphic files and last error. Support for this kind of objects
 1418: shall be available as soon as possible. Warning: DUMP cannot be used in
 1419: multiprocessing;
 1420: - configure.in script is modified to return an error when g77 is not found;
 1421: - a new internal type is used to handle shared libraries;
 1422: - a major bug is discovered and fixed in recherche_type(). It only occurs
 1423: in interactive mode ([[ 1 ]] returns a syntax error);
 1424: - a major bug is found in simplification_arbre(). Subroutine is disabled.
 1425: * Thu mar 17 2005 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8f (RPL/2)
 1426: - option -r is added to restart a process from a dump file;
 1427: - DUMP intrinsic is added. It performs synchronous checkpointing;
 1428: - GSL is upgraded to release 1.6.
 1429: * Wed dec 22 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8e (RPL/2)
 1430: - Result types of PERM and COMB instrinsic are fixed;
 1431: - RPL/2 now uses a new preprocessor due to a new 'feature' in gcc/cpp;
 1432: - RPL/2 can now use all processors on multiprocessor workstations with
 1433: DETACH, SEND, RECV and WFPROC new intrinsics. The first test program was:
 1434: 
 1435: #!/usr/local/bin/rpl -cs
 1436: 
 1437: MULTIPROCESSUS
 1438: <<
 1439:     'FONCTION' detach
 1440:     do "B" disp until false end
 1441: >>
 1442: 
 1443: FONCTION
 1444: <<
 1445:     do "A" disp until false end
 1446: >>
 1447: 
 1448: * Sun dec 12 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8d (RPL/2)
 1449: - major bug is discovered and fixed in analyse_notation_algebrique :
 1450: +++'A-B-C' returned
 1451: 1: 'A-(B-C)' instead of 1: 'A-B-C'. It is now fixed;
 1452: - recherche_type() routine is improved to cast in name 1E5E-6 or 1.23.4.5.
 1453: * Fri dec 7 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8c (RPL/2)
 1454: - major bug is fixed in formateur_fichier(). Now, it is possible to use
 1455: lists in a file record. Note that only sequential and formatted files
 1456: are supported;
 1457: - major bug is fixed in BACKSPACE intrinsic. It only occurs on large
 1458: records.
 1459: * Fri nov 26 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8b (RPL/2)
 1460: - minor bug is fixed in IP intrinsic: when argument was real without
 1461: fraction part, IP returned a real, not an integer;
 1462: - minor bug is fixed in recherche_type(): it is now possible
 1463: to enter +++<NB3 + return. RPL/2 returns a syntax error, not a acces
 1464: violation;
 1465: - MCLRIN (MacLaurin series) intrinsic is added;
 1466: - TAYLR (Taylor series) instrinsic is added;
 1467: - very minor bug is fixed in evaluation(). Sometimes, when evaluation()
 1468: is stopped by ^C, EXIT intrinsic did not work due to a mistake in
 1469: the internal system stack;
 1470: - minor bug is fixed in encart.c. System error messages returned by
 1471: this subroutine were only available in french;
 1472: - internal RPL/2 system stack corruption is fixed. This bug only affects
 1473: interactive and debug modes when evaluation routine returns an error;
 1474: - symbolic derivation subroutine is now able to derivate functions;
 1475: - minor bug is fixed in instruction_multiplication: now 'X' 1. * returns
 1476: 'X' and not 'X*1'.
 1477: * Thu nov 18 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8a (RPL/2)
 1478: - ctags in src/Makefile.am is fixed;
 1479: - first derivation subroutines are written;
 1480: - major bug is fixed in analyse_algebrique() :
 1481: before this patch, '3-5+4' was understand as '3-(5+4)' !
 1482: - instruction_division() is improved and returns 0 when it evaluates
 1483: '0/X';
 1484: - instruction_moins() is improved and returns 'NEG(X)' when it evaluates
 1485: '0-X'.
 1486: * Fri nov 5 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre8 (RPL/2)
 1487: - interface_gnuplot is modified and do not use any deprecated gnuplot
 1488: commands. Warning, you must use gnuplot 4.0;
 1489: - graphic output is improved. Now, it is possible to use two separated
 1490: scales on the same 2D graph (with "main" and "auxiliary" option of SCALE
 1491: intrinsic). For example:
 1492: 
 1493: #!/usr/local/bin/rpl -c
 1494: 
 1495: TEST
 1496: <<
 1497:     'X' indep
 1498:     { X Y } autoscale
 1499:     'SIN(X)' steq draw
 1500:     { "auxiliary" } axes
 1501:     { X Y } autoscale
 1502:     'COS(X)+2' steq draw
 1503:     { { "ticsonly" "automatic" } { "ticsonly" "automatic" } } axes
 1504:     drax persist
 1505: >>
 1506: 
 1507: - a major bug is fixed in encart.c;
 1508: - ncurses is patched.
 1509: * Mon nov 1 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre7o (RPL/2)
 1510: - configure script is updated;
 1511: - splash screen is added;
 1512: - minor bug is fixed in SYSEVAL (only occurs with SIGINT signal).
 1513: * Sun oct 24 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre7n (RPL/2)
 1514: - stack overflows are caught.
 1515: * Fri oct 8 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre7m (RPL/2)
 1516: - minor bug is fixed in both << and >> intrinsics. It only occurs when
 1517: "<<" HELP or ">>" help is called;
 1518: - DFT and IDFT are added;
 1519: - minor bug is fixed in FFT (explicit length has to be positive);
 1520: - MOD can be used with vectors and matrices arguments;
 1521: - major bugs are fixed in FFT and IFFT (trouble in the computation of the
 1522: default length of FFT). Only occur with matrices.
 1523: * Sat aug 14 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre7l (RPL/2)
 1524: - readline is upgraded to 5.0;
 1525: - gsl is upgraded to 1.5;
 1526: - corrections in HELP functions.
 1527: * Fri aug 7 2004 BERTRAND Jol <rpl@systella.fr> rpl-4.00pre7k (RPL/2)
 1528: - HELP is added;
 1529: - statistic matrix SIGMA is renamed as SDAT;
 1530: - rpl.h is modified to workaround a bug in Cygwin environment
 1531: (SA_NOMASK is not defined in include files);
 1532: - overflows are tested in HMS+ and HMS-;
 1533: - CEIL, FLOOR and IP are modified to return a correct result with huge
 1534: arguments that cannot be stored as integers;
 1535: - fix a minor bug in ->LIST. The LAST stack now contains all arguments
 1536: of this intrinsic;
 1537: - flag 32 is used with DISP;
 1538: - major bug is fixed in ->Q intrinsic (type of argument and memory leak).
 1539: * Fri may 21 2004 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7j (RPL/2)
 1540: - major bug is fixed in analyse(). CHR intrinsic cannot be called because
 1541: I have erased a 'break' in a case statement;
 1542: - major bug is fixed in AXES intrinsic. It only occurs when AXES is used
 1543: with "main" or "auxiliary" option;
 1544: - major bug is fixed in recherche_types(). With this patch, 'sin(X)' is
 1545: now well analysed as 'SIN(X)'.
 1546: * Thu apr 22 2004 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7i (RPL/2)
 1547: - major bug is discovered and fixed in formateur(). It only occurs when
 1548: an algebraic expression is displayed with '='. In some cases, parenthesis
 1549: are missing. Same fix in formateur_fichier();
 1550: - a minor bug is fixed in evaluation.c that does not return any error when
 1551: it tries to execute 'a=z' e = ;
 1552: - new code is written in each intrinsic functions to return their required
 1553: arguments.
 1554: * Sun apr 14 2004 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7h (RPL/2)
 1555: - a minor bug is fixed in recherche_type: 1.E90 is now a real;
 1556: - minor bug is fixed in formateur_reel(). It only occurs in STD mode:
 1557: 1E90 was printed as 1.00000000000000E90;
 1558: - HELP is added;
 1559: - formateur() is fixed to properly print matrices and lists;
 1560: - a lot of warnings due to deprecated syntax are fixed;
 1561: - DFT is modified but not usable;
 1562: - cosmetic bug is fixed in formateur_tex.c;
 1563: - minor bug is fixed in FFT intrinsic (segfault when FFT is called without
 1564: any argument).
 1565: * Sun Jan 25 2004 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7g (RPL/2)
 1566: - included ncurses is updated to 5.4;
 1567: - included units is updated to 1.83c;
 1568: - major bug is fixed in recherche_type() function. With this bug, RPL/2
 1569: prints 'A/INV(Z+E)+R' when you enter A Z E + inv R + /;
 1570: - DFT intrinsic is added. It returns the discrete Fourier transform of an
 1571: array. When the length of each line is 2**n, the result is the same as
 1572: the result of FFT;
 1573: - minor bug is discovered and fixed in PUT and PUTI intrinsics when these
 1574: instructions verify arguments types. It does not affect the result when
 1575: all arguments are correct.
 1576: * Sun Oct 19 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7f (RPL/2)
 1577: - major bug is fixed in evaluation of both EXIT and CYCLE intrinsics. Now,
 1578: EXIT can be used (as ABORT and KILL) to quit interactive mode of RPL/2;
 1579: - units is updated to 1.83a release;
 1580: - formateur_fichier.c is modified to handle unformatted files. This task
 1581: is not completed.
 1582: * Mon Aug 25 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7e (RPL/2)
 1583: - CLUSR is written. It purges all global variables;
 1584: - BESSEL intrinsic is fixed to allow the use of expressions as arguments;
 1585: - a major bug was introduced with rpl-4.00pre7d in formateur.c. It appears
 1586: when an algebraic expression is displayed or printed but does not affect
 1587: computations. It is now fixed;
 1588: - gsl is upgraded to 1.4.
 1589: * Mon Aug 18 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7d (RPL/2)
 1590: - algebraic expressions are now more readable when they are displayed
 1591: (less parenthesis);
 1592: - rplpp is modified to workaround a mistake in 'which' function (seems to appear
 1593: on Debian distribution, but since cpp is in the default path, RPL/2 works
 1594: fine...);
 1595: - NOT is not correctly formatted in formateur.c:
 1596: Z NOT -> 'NOT Z' but 'A+Z' NOT -> 'NOT A+Z' and 'NOT Z+A' -> 'NOTZ+A'
 1597: with a NOTZ function !
 1598: * Sun Aug 10 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7c (RPL/2)
 1599: - CYCLE is fixed. Now, it is possible to use CYCLE in an expression even
 1600: if the main loop is in a program;
 1601: - RPL/2 is tested with efence and valgrind;
 1602: - configure.in script is modified;
 1603: - units.c is modified to be built by gcc-3.3. I only have removed a #if 0/#endif
 1604: structure. I don't know why this code was compiled by gcc-3.3... Maybe
 1605: another gcc bug...
 1606: * Fri Jul 25 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7b (RPL/2)
 1607: - EXIT is fixed. Now, it is possible to use EXIT in an expression when the
 1608: main loop is in a program;
 1609: - RPL/2 can take its arguments (and command) on the standard input. Try
 1610: echo "1 2 3 + *" | rpl -i | grep "^1:" | cut -d ':' -f2
 1611: - a minor bug in vim syntax file is fixed (CYCLE and EXIT intrinsics);
 1612: - a minor bug is discovered in analyse_algebrique(). Now, expression
 1613: such as 'A+Z AND 2' or '(A+Z) AND 2' are correctly parsed.
 1614: * Mon Jun 16 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7a (RPL/2)
 1615: - Major bug is fixed in evaluation subroutine. This one only occurs
 1616: when an error in a user definition called by an expression is caught
 1617: by an IFERR structure;
 1618: - EXIT intrinsic can now be used in DO/UNTIL/END or WHILE/REPEAT/END loops;
 1619: - sequenceur() is now uninterruptible with STOP signal in recherche_type()
 1620: subroutine;
 1621: - major bug is fixed in types.c (# xxxxxb) and recherche_instruction_suivante();
 1622: - GSL exception (underflow) is now caught;
 1623: - tools/Makefile.am is fixed;
 1624: - Debian buildpackage script is fixed.
 1625: * Tue Jun 10 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre7 (RPL/2)
 1626: All memory leaks issued from the pre6 beta releases seem to be fixed.
 1627: Build process is improved and vim syntax file and manual pages are updated.
 1628: * Mon Jun 9 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6l (RPL/2)
 1629: - RCI and RCIJ intrinsic are added;
 1630: - BESSEL intrinsic is added. Syntax:
 1631: 3: type ("J", "K", "I", "Y", "j", "k", "i", "y")
 1632: 2: order (integer or real)
 1633: 1: x;
 1634: - ->Q intrinsic is added;
 1635: - major bug is fixed in C->R intrinsic;
 1636: - ROW+ and ROW- are added and tested;
 1637: - COL+ and COL- are added and tested. Syntax:
 1638: 3: matrix
 1639: 2: integer (number of column to be inserted)
 1640: 1: column matrix to be inserted;
 1641: - major bug was discovered in interface_gnuplot(). It only occurs when
 1642: the subroutine reduces the graphical depth. It is now fixed;
 1643: - Some mistakes are been fixed in vim syntax file;
 1644: - SX2, SY2 and SXY are added;
 1645: - SX and SY statistical intrinsics are added;
 1646: - DEBIAN control file is fixed;
 1647: - PAPER intrinsic is added. Supported paper formats are now : a4, a5, b5,
 1648: letter, legal, executive;
 1649: - PPAR is modified to include current graphic type.
 1650: * Sun Jun 1 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6k (RPL/2)
 1651: - SLICESCALE intrinsic is added. Its syntax is
 1652: { "automatic" nb_of_levels }
 1653: { "discrete" l1 l2 l3 ... }
 1654: { "incremental" start incr }
 1655: { "incremental" start incr end }
 1656: { "automatic" } (default);
 1657: - a minor bug (in last stack) is fixed in AXES intrinsic
 1658: - flag 52 is used to automatically update graphics;
 1659: - man pages are updated;
 1660: - evaluation() is modified to perform evaluation of expressions that contain
 1661: '=';
 1662: - a minor bug is fixed in AXES intrinsic;
 1663: - a minor bug is fixed in DRAW intrinsic (2D and 3D graphics were able to
 1664: appear on the same figure). The same mistake is fixed in DRWS intrinsic;
 1665: - LAST is disabled in evaluation subroutine (EVAL and ->NUM intrinsics).
 1666: * Sun May 18 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6j (RPL/2)
 1667: - SLICE intrinsic is added. It is used to draw 3D graphics as contour lines;
 1668: - PLOTTER is added to draw statistical clouds with lines;
 1669: - C and H source files now include vim parameters;
 1670: - vim syntax file is modified to include new intrinsics;
 1671: - static archive is modified to include all required libraries needed by
 1672: RPL/2.
 1673: * Sun May 4 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6i (RPL/2)
 1674: - '=' is added and tested;
 1675: - XCOL and YCOL are added;
 1676: - a minor bug in analyse_syntaxique() is fixed;
 1677: - THEN is modified to return an error when ELSE appears in a CASE/THEN/END
 1678: structure. ELSE is modified to return an error when ELSE appears in
 1679: an ELSE/END structure;
 1680: - a major bug is fixed in CYCLE;
 1681: - EXIT is written. When EXIT appears in a defined loop (FOR or START), the
 1682: sequencer continues after the end of this loop;
 1683: - SCLS is added;
 1684: - DRWS now uses COLS to draw 2D graphics;
 1685: - PPAR and SPAR are written. SPAR returns a list that contains the
 1686: size of the statistical matrix (or "UNAVALAIBLE" if there is any
 1687: statistical variable, or "DISABLED" if its type is not one of the type of
 1688: a statistical matrix.) and XCOL and YCOL parameters. Warning: [[]] SIZE
 1689: returns { 1 0 } and it is not a bug, because a null matrix contains _one_
 1690: null line ! Thus, [[]] STOS SPAR returns { { 1 0 } 1 2 };
 1691: - EXTERNAL intrinsic is added. Warning: by default, extern functions are
 1692: disabled. Arguments of EXTERNAL are case sensitive because the external
 1693: interface is written in C. { ext_sinus } EXTERNAL does not replace the list
 1694: of known external functions but add the new list to the last. { "all" }
 1695: EXTERNAL allows all external functions and { "none" } EXTERNAL removes all
 1696: external names of the known functions;
 1697: - mkrplso.in is modified.
 1698: * Sun Apr 20 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6h (RPL/2)
 1699: - vim syntax file is upgraded;
 1700: - a minor mistake is fixed in recherche_instruction_suivante();
 1701: - some minor memory leaks are fixed in recherche_type() function. They only
 1702: occurs when a syntax error is detected;
 1703: - #error and #warning preprocessor macros are added;
 1704: - INCR and DECR are written (with integer or variable argument);
 1705: - CSWP and RSWP are added and tested;
 1706: - a minor bug is fixed in analyse.c;
 1707: - DEBIAN/control is added to build debian package;
 1708: - SCALE is fixed and improved ("automatic" keyword);
 1709: - PUTC and PUTR new intrinsics are added.
 1710: * Sun Apr 13 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6g (RPL/2)
 1711: - a very minor bug is fixed in VISIT intrinsic. It only occurs when
 1712: VISIT does not find a name in level 1;
 1713: - configure.in script is modified to add a new test (--enable-debug
 1714: flag). Configured with this fleg, RPL/2 will be built with electric-fences;
 1715: - GETR (get row[s]) and GETC (get column[s]) are added. These new instructions
 1716: extract a part of a matrix. Syntax: [[ 1 2 3 ][ 2 3 4 ]] { 1 } GETR or
 1717: 'MATRIX' { 2 2 3 } GETR;
 1718: - LOGSCALE intrinsic is improved and now, it can be used as
 1719: { "main" "auxiliary" X Y } LOGSCALE;
 1720: - SCALE intrinsic is used to fix the limits of a graphic. Its syntax is the
 1721: same than AXES:
 1722: { { 60 "ticsonly" 2 } { "automatic" "ticsonly" 10 } } axes
 1723: { "auxiliary" { 60 "ticsonly" "default" } { "automatic" } } axes
 1724: { { -10 10 } "automatic" } SCALE.
 1725: Warning, it is not possible to ask a logarithmic scale with this intrinsic
 1726: because it changes only the dimension of the screen. To have a logarithmic
 1727: scale, you must use LOGSCALE intrinsic:
 1728: { X } LOGSCALE gives a semi-log screen, { "auxiliary" X Y } gives a log-log
 1729: screen on second scale;
 1730: - { X X } autoscale and { Y Y } logscale are now invalid;
 1731: - *D is added (depth multiplication, for 3D graphics);
 1732: - a new intrinsic (*S) is added. It changes the scale of a graphic (X, Y
 1733: and Z axes). The result of *S is the same than DUP DUP *H *W *D;
 1734: - a major bug is fixed in GETI instrinsic when it is used with a name
 1735: that contains a matrix or a vector (bad upper bounds conditions in
 1736: incrementation);
 1737: - DISP intrinsic now uses the 33-th flag. When it is not set
 1738: (default), a final carriage return is sent to the terminal;
 1739: - AXES intrinsic only takes a list that can contains the keywork
 1740: "main" or "auxiliary". Before this modification, this keyword was in
 1741: the first stack level;
 1742: - vim syntax file is upgraded;
 1743: - in appel_gnuplot(), stdin is closed when gnuplot is called with -raise
 1744: option;
 1745: - LAST is now disabled in the main loop of INT intrinsic;
 1746: - expm1 and lnp1 are rewritten to use expm1 and log1p from math.h.
 1747: * Sun Apr 6 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6f (RPL/2)
 1748: - a major bug is fixed in evaluation() subroutine. It occurs with DRAW
 1749: intrinsic when the equation cannot be evaluated (for example 'SIN(X)/X'
 1750: in 0);
 1751: - LAST is disabled in the main loop of DRAW intrinsic;
 1752: - a major bug is fixed in DRAW intrinsic. When an error occurs in the
 1753: evaluation of an equation, the system stack is returned corrupted to the
 1754: sequencer;
 1755: - the same minor bug is fixed in FOR and START. It only occurs when the limits
 1756: of a loop are not integer or real.
 1757: * Sun Mar 31 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6e (RPL/2)
 1758: - the compilation stage aborts with an error message when two definitions
 1759: have the same name. To improve the compilation() subroutine, I have to
 1760: add some tests in gestion_variables.c;
 1761: - recherche_type() subroutine ad some other connex subroutines are improved.
 1762: Now, some syntax errors about object are caught and do not perform sequencer
 1763: hangup;
 1764: - readline is upgraded (minor compilation bug with recent gcc);
 1765: - Makefile.am's and configure.in scripts are improved.
 1766: * Fri Mar 14 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6d (RPL/2)
 1767: - DRWS intrinsic is written. Two datastyles are associated: SCATTER (2D
 1768: and 3D) and HISTOGRAM (only 2D, but 3 columns are accepted, the third shown
 1769: the boxwidth, 1 by default);
 1770: - recherche_type() is rewritten to be faster;
 1771: - gsl is upgraded (release 1.3);
 1772: - ncurses is upgraded and patched (release 5.3);
 1773: - recherche_instruction_suivante() is fixed (string research with included
 1774: '"') and rewritten to be faster;
 1775: - appel_gnuplot() is fixed. When no graphic was available, it returned a
 1776: segfault.
 1777: * Sun Mar 9 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6c (RPL/2)
 1778: - RPL/2 is compiled by gcc-3.2.2 and seems to work;
 1779: - the same minor bug is fixed in REDRAW and DRAX functions;
 1780: - a minor fix is written in DRAW function (2D and 3D);
 1781: - AXES intrinsic is improved. Now { { pi "ticsonly" 4 } "automatic" } DRAX
 1782: is accepted;
 1783: - a minor bug is fixed in VISIT intrinsic.
 1784: * Sun Jan 26 2003 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6b (RPL/2)
 1785: - a minor bug is fixed in evaluation subroutine;
 1786: - vim syntax file is improved;
 1787: - DRAW (wireframe section) is fixed. When an error occurs in the evaluation
 1788: of a 3D-graphic (for example 'SIN(R)/R' with 'R=SQRT(X**2+Y**2)' in X=0 and
 1789: Y=0), no graph was procuced (it results from a bug in gnuplot, and this fix
 1790: is a quick and dirty workaround...);
 1791: - RETURN intrinsic is modified to fix a trouble in interactive mode;
 1792: - rplconvert is improved.
 1793: * Sun Dec 22 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6a (RPL/2)
 1794: - a memory leak is fixed in formateur.c that only occurs when RPL/2 try
 1795: to print a list that contains a name;
 1796: - a major bug is fixed in -> intrinsic that only occurs in evaluation case with
 1797: a algebraic expression (<< 1 -> X 'X+1' >> eval);
 1798: - vim syntax file is improved;
 1799: - RPL/2 can now be built by gcc 3.2.1;
 1800: - "**" can be used in algebraic expression;
 1801: - DRAW can now plot wireframe (3D) graphics.
 1802: * Sun Dec 8 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre6 (RPL/2)
 1803: - ncurses is patched to be compiled by gcc 3.2;
 1804: - purification_chaine is rewritten to fix a major bug (when 'chaine' is empty);
 1805: - a major bug is fixed in recherche_instruction_suivante();
 1806: - minor bug is fixed in rpl-core file. The error message is now correctly
 1807: written;
 1808: - minor bug is fixed in analyse_notation_algebrique.c and types.c.
 1809: Now, an expression such as 'A+' returns an error when it is analyzed;
 1810: - VISIT intrinsic is added;
 1811: - a major memory leak is fixed in evaluation.c. This bug rarely occurs in
 1812: normal mode.
 1813: * Sun Aug 25 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5e (RPL/2)
 1814: - an EDIT intrinsic is added;
 1815: - PRMD intrinsic returns french or english messages;
 1816: - rpl-core now call LAST intrinsic if the last stack is avalaible. It
 1817: contains the error message too;
 1818: - new syntax, ftplugin and indent files are written for vim text editor;
 1819: - major bug is found and fixed in RCL intrinsic;
 1820: - major bug is found and fixed in OR intrinsic.
 1821: * Mon Jul 29 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5d (RPL/2)
 1822: - ncurses is updated;
 1823: - minor bug is fixed on PURGE instruction (an error no caught was
 1824: returned in interactive mode).
 1825: * Mon Jul 21 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5c (RPL/2)
 1826: - ASL (arithm. shift left) is added.
 1827: * Thu Jul 11 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5b (RPL/2)
 1828: - ncurses is patched;
 1829: - gsl is added to perform arithmetic operations;
 1830: - units is patched;
 1831: - some very minor bugs have been fixed.
 1832: * Wed May 15 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5a (RPL/2)
 1833: - ncurses is patched;
 1834: - RPL/2 can now be built by gcc 3.1;
 1835: - RDZ is fixed (minor bug).
 1836: * Sun Apr 21 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre5 (RPL/2)
 1837: - RPL/2 can now be called from other languages (librpl libraries).
 1838: * Sun Mar 24 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4h (RPL/2)
 1839: - ERRN and ERRM can now be used with errors returned by external functions;
 1840: - readline and ncurses have been updated;
 1841: - no more bugs have been reported since the rpl-4.00pre4g release.
 1842: * Wed Feb 20 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4g (RPL/2)
 1843: - ERRN and ERRM intrinsic functions are written. They return the last
 1844: error number or message even if errors are caught by an IFERR structure;
 1845: - a minor bug is fixed in EPSILON intrinsic. Now, 'EPSILON(0)' returns
 1846: a non null value;
 1847: - Ncurses is updated.
 1848: * Mon Feb 18 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4f (RPL/2)
 1849: Arithmetic intrinsic instructions (- +, -, *, / and **) are improved :
 1850: 'X' 0 + and 0 'X' + return 'X';
 1851: 'X' 0 - returns 'X';
 1852: 'X' 1 * and 1 'X' * return 'X';
 1853: 'X' 0 * and 0 'X' * returns 0; 
 1854: 'X' 1 / returns 'X';
 1855: 'X' 1 ** returns 'X';
 1856: 'NEG(X)' NEG returns 'X';
 1857: - autoconf/automake scripts are improved: now, the size of the different types
 1858: found by configure are used in rpltypes.h (rplconfig.h is written by configure);
 1859: - rdynamic flag is added in src/Makefile.am. This flag is used in the first
 1860: makefile, but forgotten in the new process;
 1861: - Flag 31 is tested before saving any arguments in bibliotheques_externes.c;
 1862: - POS can now be used on lists;
 1863: - ELSILON is written. This function returns the smallest real e(x) such as
 1864: e+abs(x) != abs(x).
 1865: * Mon Feb 11 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4e (RPL/2)
 1866: - now, INT intrinsic function can be interrupted;
 1867: - precision of sommation_vecteur_xxx() subroutines is improved;
 1868: - new vim syntax file written for vim 6.0.
 1869: * Mon Feb 04 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4d (RPL/2)
 1870: - explicit error messages are now printed when the RPL/2 is used in
 1871: interactive mode;
 1872: - major bug is fixed in OPEN intrinsic: with 'REPLACE' status, file lock was
 1873: tested after the file is opened, thus, when the file was locked, it was
 1874: deleted too!;
 1875: - configure script is improved (and it seems to be good ;-) );
 1876: - An --disable-experimental flag is added to the configure script. Thus, even
 1877: if you compile a beta release, you can compile a stable RPL/2;
 1878: - new syntax and ftplugin written for vim 6.0.
 1879: * Wed Jan 30 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4c (RPL/2)
 1880: - configure script is improved.
 1881: * Sun Jan 27 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4b (RPL/2)
 1882: - ncurses now replaces termcap;
 1883: - Cme DESPLATS has written a configure script.
 1884: * Fri Jan 18 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4a (RPL/2)
 1885: - KIND is added and returns the type of the numerical argument ;
 1886: - history file is added.
 1887: * Tue Jan 15 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre4 (RPL/2)
 1888: - Stable release. Unformatted files are disabled in this release.
 1889: * Mon Jan 14 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3h (RPL/2)
 1890: - SIGTSTP (CTRL+Z) is added. In a script, a SIGTSTP signal signifies
 1891: that the RPL/2 seqencer must stop and must give a prompt. This
 1892: signal is an asynchonous "HALT" command;
 1893: - SIGINT (CTRL+C) variables stack corruption is fixed;
 1894: - IFERR seems to be fixed (in equation evaluation routine);
 1895: - Memory leak is fixed (ADR object type);
 1896: - DATE returns both date and hours;
 1897: - TIME now returns user and system CPU times;
 1898: - MEM is added.
 1899: * Thu Jan 10 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3g (RPL/2)
 1900: - Makefile is improved to support sparc v7 (sun4c), sparc v8 (sun4m) and
 1901: sparc v9 (sun4u). Now, RPL/2 can be built on i386 (i486 is known as i386),
 1902: i586, i686, K6, K7, alpha ev4, alpha ev5, alpha ev56, alpha ev6, sparc v7,
 1903: sparc v8 and sparc v9. Compilation of RPL/2 on my Sun Sparc 2 (sun4c,
 1904: CPU 4/75, 64 MB, 40 MHz with FPU) is a very great mission :
 1905: 
 1906: Newton:[~/rpl/rpl] > time make install
 1907: ...
 1908: real    338m39.623s
 1909: user    324m32.290s
 1910: sys     10m47.380s
 1911: Newton:[~/rpl/rpl] >
 1912: 
 1913: I don't know if you will compile this language on old worstations, but
 1914: it is usable ;-) ;
 1915: - SYSEVAL is improved. An external program can be called without any shell.
 1916: Thus, even if the sticky bit is set, RPL/2 can not give a shell root when
 1917: a SYSEVAL command crashes;
 1918: - minor bug is fixed in recherche_type() (# xxxxb parsing);
 1919: - presence of bootstrap entry point is verified before launching the
 1920: sequencer;
 1921: - minor bug is fixed in formateur_tex() (underscore in mathematical
 1922: expression);
 1923: - Lapack is updated.
 1924: * Thu Jan 3 2002 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3f (RPL/2)
 1925: - IFERR is now known in an expression, but not usable.
 1926: * Mon Dec 31 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3e (RPL/2)
 1927: - several bugs are fixed.
 1928: * Mon Dec 17 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3d (RPL/2)
 1929: - major bugfix in file locking.
 1930: * Fri Dec 14 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3c (RPL/2)
 1931: - minor fixes is system() call.
 1932: * Fri Nov 30 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3b (RPL/2)
 1933: - automatic limitation of the graphical depth due to a limitation (bug ?)
 1934: of gnuplot.
 1935: * Mon Nov 19 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3a (RPL/2)
 1936: - new file temp management.
 1937: * Sun Nov 18 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre3 (RPL/2)
 1938: - memory leak is fixed in STO instruction;
 1939: - minor bug in file management is fixed;
 1940: - BACKSPACE is added;
 1941: - VARS is added;
 1942: - file locks are improved.
 1943: * Wed Nov 14 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2l (RPL/2)
 1944: - major bug is fixed (on sparc architecture) and RPL/2 can now run
 1945: on sparc stations;
 1946: - INDEP and DEPND are improved;
 1947: - AXES is added;
 1948: - WRITE, APPEND and REWIND are added.
 1949: * Sun Nov 11 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2k (RPL/2)
 1950: - write is improved ;
 1951: - major bug is found and fixed in copie_objet() with struct_fichier;
 1952: - minor bug is fixed in OPEN function;
 1953: - minor bug is fixed in analyse_syntaxique() subroutine. All commands
 1954: are analysed before starting their executions.
 1955: * Thu Nov 8 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2j (RPL/2)
 1956: - minor bug is fixed in appel_gnuplot();
 1957: - RPL/2 can work without LANG variable.
 1958: * Wed Oct 31 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2i (RPL/2)
 1959: - WAIT function is improved (removing the polling function);
 1960: - LAST stack is not active (default) when rpl is called without the option -i.
 1961: In all other cases, LAST stack is active;
 1962: - Labels can be added on a gnuplot output (function LABEL);
 1963: - LCD-> and ->LCD are added.
 1964: * Sun Oct 21 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2h (RPL/2)
 1965: - minor bug is fixed in TeX output (pi);
 1966: - new english manual is added.
 1967: * Wed Oct 16 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2g (RPL/2)
 1968: - LOCK, WFLOCK and UNLOCK are added. A file is locked when it is opened;
 1969: - VERSION function is added. It returns the version number of the interpreter;
 1970: - minor bug is fixed in evaluation subroutine;
 1971: - english error messages are been fixed.
 1972: * Tue Oct 09 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2f (RPL/2)
 1973: - interrupt subroutine is added;
 1974: - formatted files support is continued.
 1975: * Sun Sep 30 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2e (RPL/2)
 1976: - formateur_fichier.c is added to perform formatted files write.
 1977: * Thu Sep 27 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2d (RPL/2)
 1978: - minors bugfixes in FIX format in formateur_reel() subroutine;
 1979: - new manual page in english;
 1980: - FORMAT intrinsic is added and can read any format for "formatted" file.
 1981: * Sun Sep 23 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2c (RPL/2)
 1982: - OPEN, CLOSE, SYNC, INQUIRE, CREATE and DELETE are tested;
 1983: - a man page in the first manual section is written.
 1984: * Thu Sep 20 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2b (RPL/2)
 1985: - major bugfixes in recherche_type() subroutine: sometimes in interactive mode,
 1986: this routine was be able to forget the last element of a list, a vector or
 1987: a matrix.
 1988: * Mon Sep 17 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2a (RPL/2)
 1989: - OPEN, CLOSE and DELETE are known by the language but not very usable;
 1990: - minor bugfixes in evaluation routine.
 1991: * Sun Sep 16 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre2 (RPL/2)
 1992: - major bugfixes in evaluation routine.
 1993: * Sat Sep 15 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre1d (RPL/2)
 1994: - conditional structures can be used in equations.
 1995: * Fri Sep 14 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre1c (RPL/2)
 1996: - Minor bugfixes in makefile.
 1997: * Sat Sep  8 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre1b (RPL/2)
 1998: - CONVERT is written;
 1999: - CYCLE, FOR/NEXT, FOR/STEP, START/NEXT, START/STEP, DO/UNTIL/END and
 2000: WHILE/REPEAT/END can now be used in an equation;
 2001: - I fix some troubles with evaluation subroutine;
 2002: - db3 library is added.
 2003: * Thu Sep  6 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre1a (RPL/2)
 2004: - add rplconvert and rplunits sources;
 2005: - add CONVERT definition (but it does not work).
 2006: * Mon Sep  3 2001 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre1 (RPL/2)
 2007: - initial public release (GPL).
 2008: * Thu Apr  2 1998 BERTRAND Jol <rpl2@systella.fr> rpl-4.00pre0 (RPL/2)
 2009: - RPL is rewritten from scratch and renamed RPL/2.
 2010: #* 1992 BERTRAND Jol rpl-3.02 (RPL-387)
 2011: #- minor bugfixes.
 2012: #* 1991 BERTRAND Jol rpl-3.01 (RPL-387)
 2013: #- arithmetic processor support is added to improve global performances.
 2014: #* 1991 BERTRAND Jol rpl-3.00 (RPL-386)
 2015: #- idem... but on an i386DX...
 2016: #* 1990 BERTRAND Jol rpl-2 (RPL-6809)
 2017: #- a new release on a more powerfull processor and with new functions and an
 2018: #built-in editor. It has been written on a SMT-Goupil G3-6809 running
 2019: #Flex9 (320 KB of RAM and a graphic card used to draw 512*256 graphics in
 2020: #8 colors)
 2021: #* 1989 BERTRAND Jol rpl-1 (RPL-6502)
 2022: #- initial release (only an historic interest) written on an ORIC Atmos 48K.
 2023: #No graphic was provided.

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