File:  [local] / rpl / lapack / lapack / ilauplo.f
Revision 1.10: download - view: text, annotated - select for diffs - revision graph
Mon Aug 7 08:39:14 2023 UTC (9 months, 1 week ago) by bertrand
Branches: MAIN
CVS tags: rpl-4_1_35, rpl-4_1_34, HEAD
Première mise à jour de lapack et blas.

    1: *> \brief \b ILAUPLO
    2: *
    3: *  =========== DOCUMENTATION ===========
    4: *
    5: * Online html documentation available at
    6: *            http://www.netlib.org/lapack/explore-html/
    7: *
    8: *> \htmlonly
    9: *> Download ILAUPLO + dependencies
   10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/ilauplo.f">
   11: *> [TGZ]</a>
   12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/ilauplo.f">
   13: *> [ZIP]</a>
   14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/ilauplo.f">
   15: *> [TXT]</a>
   16: *> \endhtmlonly
   17: *
   18: *  Definition:
   19: *  ===========
   20: *
   21: *       INTEGER FUNCTION ILAUPLO( UPLO )
   22: *
   23: *       .. Scalar Arguments ..
   24: *       CHARACTER          UPLO
   25: *       ..
   26: *
   27: *
   28: *> \par Purpose:
   29: *  =============
   30: *>
   31: *> \verbatim
   32: *>
   33: *> This subroutine translated from a character string specifying a
   34: *> upper- or lower-triangular matrix to the relevant BLAST-specified
   35: *> integer constant.
   36: *>
   37: *> ILAUPLO returns an INTEGER.  If ILAUPLO < 0, then the input is not
   38: *> a character indicating an upper- or lower-triangular matrix.
   39: *> Otherwise ILAUPLO returns the constant value corresponding to UPLO.
   40: *> \endverbatim
   41: *
   42: *  Arguments:
   43: *  ==========
   44: *
   45: *
   46: *  Authors:
   47: *  ========
   48: *
   49: *> \author Univ. of Tennessee
   50: *> \author Univ. of California Berkeley
   51: *> \author Univ. of Colorado Denver
   52: *> \author NAG Ltd.
   53: *
   54: *> \ingroup auxOTHERcomputational
   55: *
   56: *  =====================================================================
   57:       INTEGER FUNCTION ILAUPLO( UPLO )
   58: *
   59: *  -- LAPACK computational routine --
   60: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
   61: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
   62: *
   63: *     .. Scalar Arguments ..
   64:       CHARACTER          UPLO
   65: *     ..
   66: *
   67: *  =====================================================================
   68: *
   69: *     .. Parameters ..
   70:       INTEGER BLAS_UPPER, BLAS_LOWER
   71:       PARAMETER ( BLAS_UPPER = 121, BLAS_LOWER = 122 )
   72: *     ..
   73: *     .. External Functions ..
   74:       LOGICAL            LSAME
   75:       EXTERNAL           LSAME
   76: *     ..
   77: *     .. Executable Statements ..
   78:       IF( LSAME( UPLO, 'U' ) ) THEN
   79:          ILAUPLO = BLAS_UPPER
   80:       ELSE IF( LSAME( UPLO, 'L' ) ) THEN
   81:          ILAUPLO = BLAS_LOWER
   82:       ELSE
   83:          ILAUPLO = -1
   84:       END IF
   85:       RETURN
   86: *
   87: *     End of ILAUPLO
   88: *
   89:       END

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