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LAPACK
3.4.1
LAPACK: Linear Algebra PACKage
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00001 *> \brief \b CLACP2 00002 * 00003 * =========== DOCUMENTATION =========== 00004 * 00005 * Online html documentation available at 00006 * http://www.netlib.org/lapack/explore-html/ 00007 * 00008 *> \htmlonly 00009 *> Download CLACP2 + dependencies 00010 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/clacp2.f"> 00011 *> [TGZ]</a> 00012 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/clacp2.f"> 00013 *> [ZIP]</a> 00014 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/clacp2.f"> 00015 *> [TXT]</a> 00016 *> \endhtmlonly 00017 * 00018 * Definition: 00019 * =========== 00020 * 00021 * SUBROUTINE CLACP2( UPLO, M, N, A, LDA, B, LDB ) 00022 * 00023 * .. Scalar Arguments .. 00024 * CHARACTER UPLO 00025 * INTEGER LDA, LDB, M, N 00026 * .. 00027 * .. Array Arguments .. 00028 * REAL A( LDA, * ) 00029 * COMPLEX B( LDB, * ) 00030 * .. 00031 * 00032 * 00033 *> \par Purpose: 00034 * ============= 00035 *> 00036 *> \verbatim 00037 *> 00038 *> CLACP2 copies all or part of a real two-dimensional matrix A to a 00039 *> complex matrix B. 00040 *> \endverbatim 00041 * 00042 * Arguments: 00043 * ========== 00044 * 00045 *> \param[in] UPLO 00046 *> \verbatim 00047 *> UPLO is CHARACTER*1 00048 *> Specifies the part of the matrix A to be copied to B. 00049 *> = 'U': Upper triangular part 00050 *> = 'L': Lower triangular part 00051 *> Otherwise: All of the matrix A 00052 *> \endverbatim 00053 *> 00054 *> \param[in] M 00055 *> \verbatim 00056 *> M is INTEGER 00057 *> The number of rows of the matrix A. M >= 0. 00058 *> \endverbatim 00059 *> 00060 *> \param[in] N 00061 *> \verbatim 00062 *> N is INTEGER 00063 *> The number of columns of the matrix A. N >= 0. 00064 *> \endverbatim 00065 *> 00066 *> \param[in] A 00067 *> \verbatim 00068 *> A is REAL array, dimension (LDA,N) 00069 *> The m by n matrix A. If UPLO = 'U', only the upper trapezium 00070 *> is accessed; if UPLO = 'L', only the lower trapezium is 00071 *> accessed. 00072 *> \endverbatim 00073 *> 00074 *> \param[in] LDA 00075 *> \verbatim 00076 *> LDA is INTEGER 00077 *> The leading dimension of the array A. LDA >= max(1,M). 00078 *> \endverbatim 00079 *> 00080 *> \param[out] B 00081 *> \verbatim 00082 *> B is COMPLEX array, dimension (LDB,N) 00083 *> On exit, B = A in the locations specified by UPLO. 00084 *> \endverbatim 00085 *> 00086 *> \param[in] LDB 00087 *> \verbatim 00088 *> LDB is INTEGER 00089 *> The leading dimension of the array B. LDB >= max(1,M). 00090 *> \endverbatim 00091 * 00092 * Authors: 00093 * ======== 00094 * 00095 *> \author Univ. of Tennessee 00096 *> \author Univ. of California Berkeley 00097 *> \author Univ. of Colorado Denver 00098 *> \author NAG Ltd. 00099 * 00100 *> \date November 2011 00101 * 00102 *> \ingroup complexOTHERauxiliary 00103 * 00104 * ===================================================================== 00105 SUBROUTINE CLACP2( UPLO, M, N, A, LDA, B, LDB ) 00106 * 00107 * -- LAPACK auxiliary routine (version 3.4.0) -- 00108 * -- LAPACK is a software package provided by Univ. of Tennessee, -- 00109 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- 00110 * November 2011 00111 * 00112 * .. Scalar Arguments .. 00113 CHARACTER UPLO 00114 INTEGER LDA, LDB, M, N 00115 * .. 00116 * .. Array Arguments .. 00117 REAL A( LDA, * ) 00118 COMPLEX B( LDB, * ) 00119 * .. 00120 * 00121 * ===================================================================== 00122 * 00123 * .. Local Scalars .. 00124 INTEGER I, J 00125 * .. 00126 * .. External Functions .. 00127 LOGICAL LSAME 00128 EXTERNAL LSAME 00129 * .. 00130 * .. Intrinsic Functions .. 00131 INTRINSIC MIN 00132 * .. 00133 * .. Executable Statements .. 00134 * 00135 IF( LSAME( UPLO, 'U' ) ) THEN 00136 DO 20 J = 1, N 00137 DO 10 I = 1, MIN( J, M ) 00138 B( I, J ) = A( I, J ) 00139 10 CONTINUE 00140 20 CONTINUE 00141 * 00142 ELSE IF( LSAME( UPLO, 'L' ) ) THEN 00143 DO 40 J = 1, N 00144 DO 30 I = J, M 00145 B( I, J ) = A( I, J ) 00146 30 CONTINUE 00147 40 CONTINUE 00148 * 00149 ELSE 00150 DO 60 J = 1, N 00151 DO 50 I = 1, M 00152 B( I, J ) = A( I, J ) 00153 50 CONTINUE 00154 60 CONTINUE 00155 END IF 00156 * 00157 RETURN 00158 * 00159 * End of CLACP2 00160 * 00161 END