julie
be91086043
Those are just cosmetic changes to update version number and various other minor change.
92 lines
2.4 KiB
FortranFixed
92 lines
2.4 KiB
FortranFixed
SUBROUTINE CLACPY( UPLO, M, N, A, LDA, B, LDB )
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*
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* -- LAPACK auxiliary routine (version 3.2) --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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* November 2006
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*
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* .. Scalar Arguments ..
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CHARACTER UPLO
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INTEGER LDA, LDB, M, N
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* ..
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* .. Array Arguments ..
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COMPLEX A( LDA, * ), B( LDB, * )
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* ..
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*
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* Purpose
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* =======
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*
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* CLACPY copies all or part of a two-dimensional matrix A to another
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* matrix B.
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*
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* Arguments
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* =========
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*
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* UPLO (input) CHARACTER*1
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* Specifies the part of the matrix A to be copied to B.
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* = 'U': Upper triangular part
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* = 'L': Lower triangular part
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* Otherwise: All of the matrix A
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*
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* M (input) INTEGER
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* The number of rows of the matrix A. M >= 0.
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*
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* N (input) INTEGER
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* The number of columns of the matrix A. N >= 0.
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*
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* A (input) COMPLEX array, dimension (LDA,N)
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* The m by n matrix A. If UPLO = 'U', only the upper trapezium
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* is accessed; if UPLO = 'L', only the lower trapezium is
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* accessed.
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*
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* LDA (input) INTEGER
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* The leading dimension of the array A. LDA >= max(1,M).
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*
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* B (output) COMPLEX array, dimension (LDB,N)
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* On exit, B = A in the locations specified by UPLO.
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*
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* LDB (input) INTEGER
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* The leading dimension of the array B. LDB >= max(1,M).
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*
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* =====================================================================
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*
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* .. Local Scalars ..
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INTEGER I, J
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* ..
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* .. External Functions ..
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LOGICAL LSAME
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EXTERNAL LSAME
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* ..
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* .. Intrinsic Functions ..
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INTRINSIC MIN
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* ..
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* .. Executable Statements ..
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*
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IF( LSAME( UPLO, 'U' ) ) THEN
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DO 20 J = 1, N
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DO 10 I = 1, MIN( J, M )
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B( I, J ) = A( I, J )
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10 CONTINUE
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20 CONTINUE
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*
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ELSE IF( LSAME( UPLO, 'L' ) ) THEN
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DO 40 J = 1, N
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DO 30 I = J, M
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B( I, J ) = A( I, J )
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30 CONTINUE
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40 CONTINUE
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*
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ELSE
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DO 60 J = 1, N
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DO 50 I = 1, M
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B( I, J ) = A( I, J )
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50 CONTINUE
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60 CONTINUE
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END IF
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*
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RETURN
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*
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* End of CLACPY
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*
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END
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