Annotation of rpl/lapack/lapack/zlacgv.f, revision 1.8
1.8 ! bertrand 1: *> \brief \b ZLACGV
! 2: *
! 3: * =========== DOCUMENTATION ===========
! 4: *
! 5: * Online html documentation available at
! 6: * http://www.netlib.org/lapack/explore-html/
! 7: *
! 8: *> \htmlonly
! 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">
! 15: *> [TXT]</a>
! 16: *> \endhtmlonly
! 17: *
! 18: * Definition:
! 19: * ===========
! 20: *
! 21: * SUBROUTINE ZLACGV( N, X, INCX )
! 22: *
! 23: * .. Scalar Arguments ..
! 24: * INTEGER INCX, N
! 25: * ..
! 26: * .. Array Arguments ..
! 27: * COMPLEX*16 X( * )
! 28: * ..
! 29: *
! 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: *
! 65: *> \author Univ. of Tennessee
! 66: *> \author Univ. of California Berkeley
! 67: *> \author Univ. of Colorado Denver
! 68: *> \author NAG Ltd.
! 69: *
! 70: *> \date November 2011
! 71: *
! 72: *> \ingroup complex16OTHERauxiliary
! 73: *
! 74: * =====================================================================
1.1 bertrand 75: SUBROUTINE ZLACGV( N, X, INCX )
76: *
1.8 ! bertrand 77: * -- LAPACK auxiliary routine (version 3.4.0) --
1.1 bertrand 78: * -- LAPACK is a software package provided by Univ. of Tennessee, --
79: * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
1.8 ! bertrand 80: * November 2011
1.1 bertrand 81: *
82: * .. Scalar Arguments ..
83: INTEGER INCX, N
84: * ..
85: * .. Array Arguments ..
86: COMPLEX*16 X( * )
87: * ..
88: *
89: * =====================================================================
90: *
91: * .. Local Scalars ..
92: INTEGER I, IOFF
93: * ..
94: * .. Intrinsic Functions ..
95: INTRINSIC DCONJG
96: * ..
97: * .. Executable Statements ..
98: *
99: IF( INCX.EQ.1 ) THEN
100: DO 10 I = 1, N
101: X( I ) = DCONJG( X( I ) )
102: 10 CONTINUE
103: ELSE
104: IOFF = 1
105: IF( INCX.LT.0 )
106: $ IOFF = 1 - ( N-1 )*INCX
107: DO 20 I = 1, N
108: X( IOFF ) = DCONJG( X( IOFF ) )
109: IOFF = IOFF + INCX
110: 20 CONTINUE
111: END IF
112: RETURN
113: *
114: * End of ZLACGV
115: *
116: END
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