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Annotation of rpl/lapack/lapack/xerbla_array.f, revision 1.10

1.1       bertrand    1: *> \brief \b XERBLA_ARRAY
                      2: *
                      3: *  =========== DOCUMENTATION ===========
                      4: *
1.7       bertrand    5: * Online html documentation available at
                      6: *            http://www.netlib.org/lapack/explore-html/
1.1       bertrand    7: *
                      8: *> \htmlonly
1.7       bertrand    9: *> Download XERBLA_ARRAY + dependencies
                     10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/xerbla_array.f">
                     11: *> [TGZ]</a>
                     12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/xerbla_array.f">
                     13: *> [ZIP]</a>
                     14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/xerbla_array.f">
1.1       bertrand   15: *> [TXT]</a>
1.7       bertrand   16: *> \endhtmlonly
1.1       bertrand   17: *
                     18: *  Definition:
                     19: *  ===========
                     20: *
                     21: *       SUBROUTINE XERBLA_ARRAY( SRNAME_ARRAY, SRNAME_LEN, INFO)
1.7       bertrand   22: *
1.1       bertrand   23: *       .. Scalar Arguments ..
                     24: *       INTEGER SRNAME_LEN, INFO
                     25: *       ..
                     26: *       .. Array Arguments ..
                     27: *       CHARACTER(1) SRNAME_ARRAY(SRNAME_LEN)
                     28: *       ..
1.7       bertrand   29: *
1.1       bertrand   30: *
                     31: *> \par Purpose:
                     32: *  =============
                     33: *>
                     34: *> \verbatim
                     35: *>
                     36: *> XERBLA_ARRAY assists other languages in calling XERBLA, the LAPACK
                     37: *> and BLAS error handler.  Rather than taking a Fortran string argument
                     38: *> as the function's name, XERBLA_ARRAY takes an array of single
                     39: *> characters along with the array's length.  XERBLA_ARRAY then copies
                     40: *> up to 32 characters of that array into a Fortran string and passes
                     41: *> that to XERBLA.  If called with a non-positive SRNAME_LEN,
                     42: *> XERBLA_ARRAY will call XERBLA with a string of all blank characters.
                     43: *>
                     44: *> Say some macro or other device makes XERBLA_ARRAY available to C99
                     45: *> by a name lapack_xerbla and with a common Fortran calling convention.
                     46: *> Then a C99 program could invoke XERBLA via:
                     47: *>    {
                     48: *>      int flen = strlen(__func__);
                     49: *>      lapack_xerbla(__func__, &flen, &info);
                     50: *>    }
                     51: *>
                     52: *> Providing XERBLA_ARRAY is not necessary for intercepting LAPACK
                     53: *> errors.  XERBLA_ARRAY calls XERBLA.
                     54: *> \endverbatim
                     55: *
                     56: *  Arguments:
                     57: *  ==========
                     58: *
                     59: *> \param[in] SRNAME_ARRAY
                     60: *> \verbatim
                     61: *>          SRNAME_ARRAY is CHARACTER(1) array, dimension (SRNAME_LEN)
                     62: *>          The name of the routine which called XERBLA_ARRAY.
                     63: *> \endverbatim
                     64: *>
                     65: *> \param[in] SRNAME_LEN
                     66: *> \verbatim
                     67: *>          SRNAME_LEN is INTEGER
                     68: *>          The length of the name in SRNAME_ARRAY.
                     69: *> \endverbatim
                     70: *>
                     71: *> \param[in] INFO
                     72: *> \verbatim
                     73: *>          INFO is INTEGER
                     74: *>          The position of the invalid parameter in the parameter list
                     75: *>          of the calling routine.
                     76: *> \endverbatim
                     77: *
                     78: *  Authors:
                     79: *  ========
                     80: *
1.7       bertrand   81: *> \author Univ. of Tennessee
                     82: *> \author Univ. of California Berkeley
                     83: *> \author Univ. of Colorado Denver
                     84: *> \author NAG Ltd.
1.1       bertrand   85: *
1.7       bertrand   86: *> \ingroup OTHERauxiliary
1.1       bertrand   87: *
                     88: *  =====================================================================
                     89:       SUBROUTINE XERBLA_ARRAY( SRNAME_ARRAY, SRNAME_LEN, INFO)
                     90: *
1.10    ! bertrand   91: *  -- LAPACK auxiliary routine --
1.1       bertrand   92: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
                     93: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
                     94: *
                     95: *     .. Scalar Arguments ..
                     96:       INTEGER SRNAME_LEN, INFO
                     97: *     ..
                     98: *     .. Array Arguments ..
                     99:       CHARACTER(1) SRNAME_ARRAY(SRNAME_LEN)
                    100: *     ..
                    101: *
                    102: * =====================================================================
                    103: *
                    104: *     ..
                    105: *     .. Local Scalars ..
                    106:       INTEGER I
                    107: *     ..
                    108: *     .. Local Arrays ..
                    109:       CHARACTER*32 SRNAME
                    110: *     ..
                    111: *     .. Intrinsic Functions ..
                    112:       INTRINSIC MIN, LEN
                    113: *     ..
                    114: *     .. External Functions ..
                    115:       EXTERNAL XERBLA
                    116: *     ..
                    117: *     .. Executable Statements ..
1.10    ! bertrand  118:       SRNAME = ' '
1.1       bertrand  119:       DO I = 1, MIN( SRNAME_LEN, LEN( SRNAME ) )
                    120:          SRNAME( I:I ) = SRNAME_ARRAY( I )
                    121:       END DO
                    122: 
                    123:       CALL XERBLA( SRNAME, INFO )
                    124: 
                    125:       RETURN
                    126:       END