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Annotation of rpl/lapack/lapack/zlacgv.f, revision 1.18

1.11      bertrand    1: *> \brief \b ZLACGV conjugates a complex vector.
1.8       bertrand    2: *
                      3: *  =========== DOCUMENTATION ===========
                      4: *
1.15      bertrand    5: * Online html documentation available at
                      6: *            http://www.netlib.org/lapack/explore-html/
1.8       bertrand    7: *
                      8: *> \htmlonly
1.15      bertrand    9: *> Download ZLACGV + dependencies
                     10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlacgv.f">
                     11: *> [TGZ]</a>
                     12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlacgv.f">
                     13: *> [ZIP]</a>
                     14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlacgv.f">
1.8       bertrand   15: *> [TXT]</a>
1.15      bertrand   16: *> \endhtmlonly
1.8       bertrand   17: *
                     18: *  Definition:
                     19: *  ===========
                     20: *
                     21: *       SUBROUTINE ZLACGV( N, X, INCX )
1.15      bertrand   22: *
1.8       bertrand   23: *       .. Scalar Arguments ..
                     24: *       INTEGER            INCX, N
                     25: *       ..
                     26: *       .. Array Arguments ..
                     27: *       COMPLEX*16         X( * )
                     28: *       ..
1.15      bertrand   29: *
1.8       bertrand   30: *
                     31: *> \par Purpose:
                     32: *  =============
                     33: *>
                     34: *> \verbatim
                     35: *>
                     36: *> ZLACGV conjugates a complex vector of length N.
                     37: *> \endverbatim
                     38: *
                     39: *  Arguments:
                     40: *  ==========
                     41: *
                     42: *> \param[in] N
                     43: *> \verbatim
                     44: *>          N is INTEGER
                     45: *>          The length of the vector X.  N >= 0.
                     46: *> \endverbatim
                     47: *>
                     48: *> \param[in,out] X
                     49: *> \verbatim
                     50: *>          X is COMPLEX*16 array, dimension
                     51: *>                         (1+(N-1)*abs(INCX))
                     52: *>          On entry, the vector of length N to be conjugated.
                     53: *>          On exit, X is overwritten with conjg(X).
                     54: *> \endverbatim
                     55: *>
                     56: *> \param[in] INCX
                     57: *> \verbatim
                     58: *>          INCX is INTEGER
                     59: *>          The spacing between successive elements of X.
                     60: *> \endverbatim
                     61: *
                     62: *  Authors:
                     63: *  ========
                     64: *
1.15      bertrand   65: *> \author Univ. of Tennessee
                     66: *> \author Univ. of California Berkeley
                     67: *> \author Univ. of Colorado Denver
                     68: *> \author NAG Ltd.
1.8       bertrand   69: *
                     70: *> \ingroup complex16OTHERauxiliary
                     71: *
                     72: *  =====================================================================
1.1       bertrand   73:       SUBROUTINE ZLACGV( N, X, INCX )
                     74: *
1.18    ! bertrand   75: *  -- LAPACK auxiliary routine --
1.1       bertrand   76: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
                     77: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
                     78: *
                     79: *     .. Scalar Arguments ..
                     80:       INTEGER            INCX, N
                     81: *     ..
                     82: *     .. Array Arguments ..
                     83:       COMPLEX*16         X( * )
                     84: *     ..
                     85: *
                     86: * =====================================================================
                     87: *
                     88: *     .. Local Scalars ..
                     89:       INTEGER            I, IOFF
                     90: *     ..
                     91: *     .. Intrinsic Functions ..
                     92:       INTRINSIC          DCONJG
                     93: *     ..
                     94: *     .. Executable Statements ..
                     95: *
                     96:       IF( INCX.EQ.1 ) THEN
                     97:          DO 10 I = 1, N
                     98:             X( I ) = DCONJG( X( I ) )
                     99:    10    CONTINUE
                    100:       ELSE
                    101:          IOFF = 1
                    102:          IF( INCX.LT.0 )
                    103:      $      IOFF = 1 - ( N-1 )*INCX
                    104:          DO 20 I = 1, N
                    105:             X( IOFF ) = DCONJG( X( IOFF ) )
                    106:             IOFF = IOFF + INCX
                    107:    20    CONTINUE
                    108:       END IF
                    109:       RETURN
                    110: *
                    111: *     End of ZLACGV
                    112: *
                    113:       END