Return to zlacp2.f CVS log

Up to [local] / rpl / lapack / lapack

Première mise à jour de lapack et blas.

    1: *> \brief \b ZLACP2 copies all or part of a real two-dimensional array to a complex array.
    2: *
    3: *  =========== DOCUMENTATION ===========
    4: *
    5: * Online html documentation available at
    6: *            http://www.netlib.org/lapack/explore-html/
    7: *
    8: *> \htmlonly
    9: *> Download ZLACP2 + dependencies
   10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlacp2.f">
   11: *> [TGZ]</a>
   12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlacp2.f">
   13: *> [ZIP]</a>
   14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlacp2.f">
   15: *> [TXT]</a>
   16: *> \endhtmlonly
   17: *
   18: *  Definition:
   19: *  ===========
   20: *
   21: *       SUBROUTINE ZLACP2( UPLO, M, N, A, LDA, B, LDB )
   22: *
   23: *       .. Scalar Arguments ..
   24: *       CHARACTER          UPLO
   25: *       INTEGER            LDA, LDB, M, N
   26: *       ..
   27: *       .. Array Arguments ..
   28: *       DOUBLE PRECISION   A( LDA, * )
   29: *       COMPLEX*16         B( LDB, * )
   30: *       ..
   31: *
   32: *
   33: *> \par Purpose:
   34: *  =============
   35: *>
   36: *> \verbatim
   37: *>
   38: *> ZLACP2 copies all or part of a real two-dimensional matrix A to a
   39: *> complex matrix B.
   40: *> \endverbatim
   41: *
   42: *  Arguments:
   43: *  ==========
   44: *
   45: *> \param[in] UPLO
   46: *> \verbatim
   47: *>          UPLO is CHARACTER*1
   48: *>          Specifies the part of the matrix A to be copied to B.
   49: *>          = 'U':      Upper triangular part
   50: *>          = 'L':      Lower triangular part
   51: *>          Otherwise:  All of the matrix A
   52: *> \endverbatim
   53: *>
   54: *> \param[in] M
   55: *> \verbatim
   56: *>          M is INTEGER
   57: *>          The number of rows of the matrix A.  M >= 0.
   58: *> \endverbatim
   59: *>
   60: *> \param[in] N
   61: *> \verbatim
   62: *>          N is INTEGER
   63: *>          The number of columns of the matrix A.  N >= 0.
   64: *> \endverbatim
   65: *>
   66: *> \param[in] A
   67: *> \verbatim
   68: *>          A is DOUBLE PRECISION array, dimension (LDA,N)
   69: *>          The m by n matrix A.  If UPLO = 'U', only the upper trapezium
   70: *>          is accessed; if UPLO = 'L', only the lower trapezium is
   71: *>          accessed.
   72: *> \endverbatim
   73: *>
   74: *> \param[in] LDA
   75: *> \verbatim
   76: *>          LDA is INTEGER
   77: *>          The leading dimension of the array A.  LDA >= max(1,M).
   78: *> \endverbatim
   79: *>
   80: *> \param[out] B
   81: *> \verbatim
   82: *>          B is COMPLEX*16 array, dimension (LDB,N)
   83: *>          On exit, B = A in the locations specified by UPLO.
   84: *> \endverbatim
   85: *>
   86: *> \param[in] LDB
   87: *> \verbatim
   88: *>          LDB is INTEGER
   89: *>          The leading dimension of the array B.  LDB >= max(1,M).
   90: *> \endverbatim
   91: *
   92: *  Authors:
   93: *  ========
   94: *
   95: *> \author Univ. of Tennessee
   96: *> \author Univ. of California Berkeley
   97: *> \author Univ. of Colorado Denver
   98: *> \author NAG Ltd.
   99: *
  100: *> \ingroup complex16OTHERauxiliary
  101: *
  102: *  =====================================================================
  103:       SUBROUTINE ZLACP2( UPLO, M, N, A, LDA, B, LDB )
  104: *
  105: *  -- LAPACK auxiliary routine --
  106: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
  107: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
  108: *
  109: *     .. Scalar Arguments ..
  110:       CHARACTER          UPLO
  111:       INTEGER            LDA, LDB, M, N
  112: *     ..
  113: *     .. Array Arguments ..
  114:       DOUBLE PRECISION   A( LDA, * )
  115:       COMPLEX*16         B( LDB, * )
  116: *     ..
  117: *
  118: *  =====================================================================
  119: *
  120: *     .. Local Scalars ..
  121:       INTEGER            I, J
  122: *     ..
  123: *     .. External Functions ..
  124:       LOGICAL            LSAME
  125:       EXTERNAL           LSAME
  126: *     ..
  127: *     .. Intrinsic Functions ..
  128:       INTRINSIC          MIN
  129: *     ..
  130: *     .. Executable Statements ..
  131: *
  132:       IF( LSAME( UPLO, 'U' ) ) THEN
  133:          DO 20 J = 1, N
  134:             DO 10 I = 1, MIN( J, M )
  135:                B( I, J ) = A( I, J )
  136:    10       CONTINUE
  137:    20    CONTINUE
  138: *
  139:       ELSE IF( LSAME( UPLO, 'L' ) ) THEN
  140:          DO 40 J = 1, N
  141:             DO 30 I = J, M
  142:                B( I, J ) = A( I, J )
  143:    30       CONTINUE
  144:    40    CONTINUE
  145: *
  146:       ELSE
  147:          DO 60 J = 1, N
  148:             DO 50 I = 1, M
  149:                B( I, J ) = A( I, J )
  150:    50       CONTINUE
  151:    60    CONTINUE
  152:       END IF
  153: *
  154:       RETURN
  155: *
  156: *     End of ZLACP2
  157: *
  158:       END