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 matrix B.
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
M is INTEGER The number of rows of the matrix A. M >= 0.
N is INTEGER The number of columns of the matrix A. N >= 0.
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.
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).
B is DOUBLE PRECISION array, dimension (LDB,N) On exit, B = A in the locations specified by UPLO.
LDB is INTEGER The leading dimension of the array B. LDB >= max(1,M).
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