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cs440-acg/ext/eigen/lapack/zlacgv.f

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+*> \brief \b ZLACGV
+*
+*  =========== 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. 
+*
+*> \date November 2011
+*
+*> \ingroup complex16OTHERauxiliary
+*
+*  =====================================================================
+      SUBROUTINE ZLACGV( N, X, INCX )
+*
+*  -- LAPACK auxiliary routine (version 3.4.0) --
+*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     November 2011
+*
+*     .. 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