NAME

dlacpy - copie all or part of a two-dimensional matrix A to another matrix B

SYNOPSIS

SUBROUTINE DLACPY( UPLO, M, N, A, LDA, B, LDB )

CHARACTER UPLO

INTEGER LDA, LDB, M, N

DOUBLE PRECISION A( LDA, ∗ ), B( LDB, ∗ )

#include <sunperf.h>

void dlacpy(char uplo, int m, int n, double ∗da, int lda, double ∗db, int ldb) ;

PURPOSE

DLACPY copies all or part of a two-dimensional matrix A to another matrix B. 
 

ARGUMENTS

UPLO (input) 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 (input) INTEGER
The number of rows of the matrix A.  M >= 0.

N (input) INTEGER
The number of columns of the matrix A.  N >= 0.

A (input) 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 (input) INTEGER
The leading dimension of the array A.  LDA >= max(1,M).

B (output) DOUBLE PRECISION array, dimension (LDB,N)
On exit, B = A in the locations specified by UPLO.

LDB (input) INTEGER
The leading dimension of the array B.  LDB >= max(1,M).

SunOS WorkShop_5.0  —  Last change: 10 Dec 1998