114 lines
2.7 KiB
Fortran
114 lines
2.7 KiB
Fortran
*> \brief \b ZLACGV conjugates a complex vector.
|
|
*
|
|
* =========== DOCUMENTATION ===========
|
|
*
|
|
* Online html documentation available at
|
|
* http://www.netlib.org/lapack/explore-html/
|
|
*
|
|
*> \htmlonly
|
|
*> Download ZLACGV + dependencies
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlacgv.f">
|
|
*> [TGZ]</a>
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlacgv.f">
|
|
*> [ZIP]</a>
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlacgv.f">
|
|
*> [TXT]</a>
|
|
*> \endhtmlonly
|
|
*
|
|
* Definition:
|
|
* ===========
|
|
*
|
|
* SUBROUTINE ZLACGV( N, X, INCX )
|
|
*
|
|
* .. Scalar Arguments ..
|
|
* INTEGER INCX, N
|
|
* ..
|
|
* .. Array Arguments ..
|
|
* COMPLEX*16 X( * )
|
|
* ..
|
|
*
|
|
*
|
|
*> \par Purpose:
|
|
* =============
|
|
*>
|
|
*> \verbatim
|
|
*>
|
|
*> ZLACGV conjugates a complex vector of length N.
|
|
*> \endverbatim
|
|
*
|
|
* Arguments:
|
|
* ==========
|
|
*
|
|
*> \param[in] N
|
|
*> \verbatim
|
|
*> N is INTEGER
|
|
*> The length of the vector X. N >= 0.
|
|
*> \endverbatim
|
|
*>
|
|
*> \param[in,out] X
|
|
*> \verbatim
|
|
*> X is COMPLEX*16 array, dimension
|
|
*> (1+(N-1)*abs(INCX))
|
|
*> On entry, the vector of length N to be conjugated.
|
|
*> On exit, X is overwritten with conjg(X).
|
|
*> \endverbatim
|
|
*>
|
|
*> \param[in] INCX
|
|
*> \verbatim
|
|
*> INCX is INTEGER
|
|
*> The spacing between successive elements of X.
|
|
*> \endverbatim
|
|
*
|
|
* Authors:
|
|
* ========
|
|
*
|
|
*> \author Univ. of Tennessee
|
|
*> \author Univ. of California Berkeley
|
|
*> \author Univ. of Colorado Denver
|
|
*> \author NAG Ltd.
|
|
*
|
|
*> \ingroup complex16OTHERauxiliary
|
|
*
|
|
* =====================================================================
|
|
SUBROUTINE ZLACGV( N, X, INCX )
|
|
*
|
|
* -- LAPACK auxiliary routine --
|
|
* -- LAPACK is a software package provided by Univ. of Tennessee, --
|
|
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
|
|
*
|
|
* .. Scalar Arguments ..
|
|
INTEGER INCX, N
|
|
* ..
|
|
* .. Array Arguments ..
|
|
COMPLEX*16 X( * )
|
|
* ..
|
|
*
|
|
* =====================================================================
|
|
*
|
|
* .. Local Scalars ..
|
|
INTEGER I, IOFF
|
|
* ..
|
|
* .. Intrinsic Functions ..
|
|
INTRINSIC DCONJG
|
|
* ..
|
|
* .. Executable Statements ..
|
|
*
|
|
IF( INCX.EQ.1 ) THEN
|
|
DO 10 I = 1, N
|
|
X( I ) = DCONJG( X( I ) )
|
|
10 CONTINUE
|
|
ELSE
|
|
IOFF = 1
|
|
IF( INCX.LT.0 )
|
|
$ IOFF = 1 - ( N-1 )*INCX
|
|
DO 20 I = 1, N
|
|
X( IOFF ) = DCONJG( X( IOFF ) )
|
|
IOFF = IOFF + INCX
|
|
20 CONTINUE
|
|
END IF
|
|
RETURN
|
|
*
|
|
* End of ZLACGV
|
|
*
|
|
END
|