| 1 | *> \brief \b CLACGV
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| 2 | *
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| 3 | * =========== DOCUMENTATION ===========
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| 4 | *
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| 5 | * Online html documentation available at
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| 6 | * http://www.netlib.org/lapack/explore-html/
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| 7 | *
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| 8 | *> \htmlonly
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| 9 | *> Download CLACGV + dependencies
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| 10 | *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/clacgv.f">
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| 11 | *> [TGZ]</a>
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| 12 | *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/clacgv.f">
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| 13 | *> [ZIP]</a>
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| 14 | *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/clacgv.f">
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| 15 | *> [TXT]</a>
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| 16 | *> \endhtmlonly
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| 17 | *
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| 18 | * Definition:
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| 19 | * ===========
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| 20 | *
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| 21 | * SUBROUTINE CLACGV( N, X, INCX )
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| 22 | *
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| 23 | * .. Scalar Arguments ..
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| 24 | * INTEGER INCX, N
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| 25 | * ..
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| 26 | * .. Array Arguments ..
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| 27 | * COMPLEX X( * )
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| 28 | * ..
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| 29 | *
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| 30 | *
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| 31 | *> \par Purpose:
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| 32 | * =============
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| 33 | *>
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| 34 | *> \verbatim
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| 35 | *>
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| 36 | *> CLACGV conjugates a complex vector of length N.
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| 37 | *> \endverbatim
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| 38 | *
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| 39 | * Arguments:
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| 40 | * ==========
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| 41 | *
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| 42 | *> \param[in] N
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| 43 | *> \verbatim
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| 44 | *> N is INTEGER
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| 45 | *> The length of the vector X. N >= 0.
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| 46 | *> \endverbatim
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| 47 | *>
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| 48 | *> \param[in,out] X
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| 49 | *> \verbatim
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| 50 | *> X is COMPLEX array, dimension
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| 51 | *> (1+(N-1)*abs(INCX))
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| 52 | *> On entry, the vector of length N to be conjugated.
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| 53 | *> On exit, X is overwritten with conjg(X).
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| 54 | *> \endverbatim
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| 55 | *>
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| 56 | *> \param[in] INCX
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| 57 | *> \verbatim
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| 58 | *> INCX is INTEGER
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| 59 | *> The spacing between successive elements of X.
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| 60 | *> \endverbatim
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| 61 | *
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| 62 | * Authors:
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| 63 | * ========
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| 64 | *
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| 65 | *> \author Univ. of Tennessee
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| 66 | *> \author Univ. of California Berkeley
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| 67 | *> \author Univ. of Colorado Denver
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| 68 | *> \author NAG Ltd.
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| 69 | *
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| 70 | *> \date November 2011
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| 71 | *
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| 72 | *> \ingroup complexOTHERauxiliary
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| 73 | *
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| 74 | * =====================================================================
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| 75 | SUBROUTINE CLACGV( N, X, INCX )
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| 76 | *
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| 77 | * -- LAPACK auxiliary routine (version 3.4.0) --
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| 78 | * -- LAPACK is a software package provided by Univ. of Tennessee, --
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| 79 | * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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| 80 | * November 2011
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| 81 | *
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| 82 | * .. Scalar Arguments ..
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| 83 | INTEGER INCX, N
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| 84 | * ..
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| 85 | * .. Array Arguments ..
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| 86 | COMPLEX X( * )
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| 87 | * ..
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| 88 | *
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| 89 | * =====================================================================
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| 90 | *
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| 91 | * .. Local Scalars ..
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| 92 | INTEGER I, IOFF
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| 93 | * ..
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| 94 | * .. Intrinsic Functions ..
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| 95 | INTRINSIC CONJG
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| 96 | * ..
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| 97 | * .. Executable Statements ..
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| 98 | *
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| 99 | IF( INCX.EQ.1 ) THEN
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| 100 | DO 10 I = 1, N
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| 101 | X( I ) = CONJG( X( I ) )
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| 102 | 10 CONTINUE
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| 103 | ELSE
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| 104 | IOFF = 1
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| 105 | IF( INCX.LT.0 )
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| 106 | $ IOFF = 1 - ( N-1 )*INCX
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| 107 | DO 20 I = 1, N
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| 108 | X( IOFF ) = CONJG( X( IOFF ) )
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| 109 | IOFF = IOFF + INCX
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| 110 | 20 CONTINUE
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| 111 | END IF
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| 112 | RETURN
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| 113 | *
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| 114 | * End of CLACGV
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| 115 | *
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| 116 | END
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