LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ zlacp2()

subroutine zlacp2 ( character  UPLO,
integer  M,
integer  N,
double precision, dimension( lda, * )  A,
integer  LDA,
complex*16, dimension( ldb, * )  B,
integer  LDB 
)

ZLACP2 copies all or part of a real two-dimensional array to a complex array.

Download ZLACP2 + dependencies [TGZ] [ZIP] [TXT]

Purpose:
 ZLACP2 copies all or part of a real two-dimensional matrix A to a
 complex matrix B.
Parameters
[in]UPLO
          UPLO is CHARACTER*1
          Specifies the part of the matrix A to be copied to B.
          = 'U':      Upper triangular part
          = 'L':      Lower triangular part
          Otherwise:  All of the matrix A
[in]M
          M is INTEGER
          The number of rows of the matrix A.  M >= 0.
[in]N
          N is INTEGER
          The number of columns of the matrix A.  N >= 0.
[in]A
          A is DOUBLE PRECISION array, dimension (LDA,N)
          The m by n matrix A.  If UPLO = 'U', only the upper trapezium
          is accessed; if UPLO = 'L', only the lower trapezium is
          accessed.
[in]LDA
          LDA is INTEGER
          The leading dimension of the array A.  LDA >= max(1,M).
[out]B
          B is COMPLEX*16 array, dimension (LDB,N)
          On exit, B = A in the locations specified by UPLO.
[in]LDB
          LDB is INTEGER
          The leading dimension of the array B.  LDB >= max(1,M).
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
December 2016

Definition at line 106 of file zlacp2.f.

106 *
107 * -- LAPACK auxiliary routine (version 3.7.0) --
108 * -- LAPACK is a software package provided by Univ. of Tennessee, --
109 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
110 * December 2016
111 *
112 * .. Scalar Arguments ..
113  CHARACTER uplo
114  INTEGER lda, ldb, m, n
115 * ..
116 * .. Array Arguments ..
117  DOUBLE PRECISION a( lda, * )
118  COMPLEX*16 b( ldb, * )
119 * ..
120 *
121 * =====================================================================
122 *
123 * .. Local Scalars ..
124  INTEGER i, j
125 * ..
126 * .. External Functions ..
127  LOGICAL lsame
128  EXTERNAL lsame
129 * ..
130 * .. Intrinsic Functions ..
131  INTRINSIC min
132 * ..
133 * .. Executable Statements ..
134 *
135  IF( lsame( uplo, 'U' ) ) THEN
136  DO 20 j = 1, n
137  DO 10 i = 1, min( j, m )
138  b( i, j ) = a( i, j )
139  10 CONTINUE
140  20 CONTINUE
141 *
142  ELSE IF( lsame( uplo, 'L' ) ) THEN
143  DO 40 j = 1, n
144  DO 30 i = j, m
145  b( i, j ) = a( i, j )
146  30 CONTINUE
147  40 CONTINUE
148 *
149  ELSE
150  DO 60 j = 1, n
151  DO 50 i = 1, m
152  b( i, j ) = a( i, j )
153  50 CONTINUE
154  60 CONTINUE
155  END IF
156 *
157  RETURN
158 *
159 * End of ZLACP2
160 *
logical function lsame(CA, CB)
LSAME
Definition: lsame.f:55
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