LAPACK  3.5.0 LAPACK: Linear Algebra PACKage
dlacpy.f File Reference

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## Functions/Subroutines

subroutine dlacpy (UPLO, M, N, A, LDA, B, LDB)
DLACPY copies all or part of one two-dimensional array to another. More...

## Function/Subroutine Documentation

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

DLACPY copies all or part of one two-dimensional array to another.

``` DLACPY copies all or part of a two-dimensional matrix A to another
 [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 triangle or trapezoid is accessed; if UPLO = 'L', only the lower triangle or trapezoid is accessed.``` [in] LDA ``` LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).``` [out] B ``` B is DOUBLE PRECISION 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).```