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Annotation of rpl/lapack/lapack/zlascl2.f, revision 1.5

1.5     ! bertrand    1: *> \brief \b ZLASCL2
        !             2: *
        !             3: *  =========== DOCUMENTATION ===========
        !             4: *
        !             5: * Online html documentation available at 
        !             6: *            http://www.netlib.org/lapack/explore-html/ 
        !             7: *
        !             8: *> \htmlonly
        !             9: *> Download ZLASCL2 + dependencies 
        !            10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlascl2.f"> 
        !            11: *> [TGZ]</a> 
        !            12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlascl2.f"> 
        !            13: *> [ZIP]</a> 
        !            14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlascl2.f"> 
        !            15: *> [TXT]</a>
        !            16: *> \endhtmlonly 
        !            17: *
        !            18: *  Definition:
        !            19: *  ===========
        !            20: *
        !            21: *       SUBROUTINE ZLASCL2 ( M, N, D, X, LDX )
        !            22: * 
        !            23: *       .. Scalar Arguments ..
        !            24: *       INTEGER            M, N, LDX
        !            25: *       ..
        !            26: *       .. Array Arguments ..
        !            27: *       DOUBLE PRECISION   D( * )
        !            28: *       COMPLEX*16         X( LDX, * )
        !            29: *       ..
        !            30: *  
        !            31: *
        !            32: *> \par Purpose:
        !            33: *  =============
        !            34: *>
        !            35: *> \verbatim
        !            36: *>
        !            37: *> ZLASCL2 performs a diagonal scaling on a vector:
        !            38: *>   x <-- D * x
        !            39: *> where the DOUBLE PRECISION diagonal matrix D is stored as a vector.
        !            40: *>
        !            41: *> Eventually to be replaced by BLAS_zge_diag_scale in the new BLAS
        !            42: *> standard.
        !            43: *> \endverbatim
        !            44: *
        !            45: *  Arguments:
        !            46: *  ==========
        !            47: *
        !            48: *> \param[in] M
        !            49: *> \verbatim
        !            50: *>          M is INTEGER
        !            51: *>     The number of rows of D and X. M >= 0.
        !            52: *> \endverbatim
        !            53: *>
        !            54: *> \param[in] N
        !            55: *> \verbatim
        !            56: *>          N is INTEGER
        !            57: *>     The number of columns of D and X. N >= 0.
        !            58: *> \endverbatim
        !            59: *>
        !            60: *> \param[in] D
        !            61: *> \verbatim
        !            62: *>          D is DOUBLE PRECISION array, length M
        !            63: *>     Diagonal matrix D, stored as a vector of length M.
        !            64: *> \endverbatim
        !            65: *>
        !            66: *> \param[in,out] X
        !            67: *> \verbatim
        !            68: *>          X is COMPLEX*16 array, dimension (LDX,N)
        !            69: *>     On entry, the vector X to be scaled by D.
        !            70: *>     On exit, the scaled vector.
        !            71: *> \endverbatim
        !            72: *>
        !            73: *> \param[in] LDX
        !            74: *> \verbatim
        !            75: *>          LDX is INTEGER
        !            76: *>     The leading dimension of the vector X. LDX >= 0.
        !            77: *> \endverbatim
        !            78: *
        !            79: *  Authors:
        !            80: *  ========
        !            81: *
        !            82: *> \author Univ. of Tennessee 
        !            83: *> \author Univ. of California Berkeley 
        !            84: *> \author Univ. of Colorado Denver 
        !            85: *> \author NAG Ltd. 
        !            86: *
        !            87: *> \date November 2011
        !            88: *
        !            89: *> \ingroup complex16OTHERcomputational
        !            90: *
        !            91: *  =====================================================================
1.1       bertrand   92:       SUBROUTINE ZLASCL2 ( M, N, D, X, LDX )
                     93: *
1.5     ! bertrand   94: *  -- LAPACK computational routine (version 3.4.0) --
        !            95: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
        !            96: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
        !            97: *     November 2011
1.1       bertrand   98: *
                     99: *     .. Scalar Arguments ..
                    100:       INTEGER            M, N, LDX
                    101: *     ..
                    102: *     .. Array Arguments ..
                    103:       DOUBLE PRECISION   D( * )
                    104:       COMPLEX*16         X( LDX, * )
                    105: *     ..
                    106: *
                    107: *  =====================================================================
                    108: *
                    109: *     .. Local Scalars ..
                    110:       INTEGER            I, J
                    111: *     ..
                    112: *     .. Executable Statements ..
                    113: *
                    114:       DO J = 1, N
                    115:          DO I = 1, M
                    116:             X( I, J ) = X( I, J ) * D( I )
                    117:          END DO
                    118:       END DO
                    119: 
                    120:       RETURN
                    121:       END
                    122: