# dlacpy.f - Man Page

## Synopsis

### Functions/Subroutines

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

## 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.

**Purpose:**

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

**Parameters:***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

*M*M is INTEGER The number of rows of the matrix A. M >= 0.

*N*N is INTEGER The number of columns of the matrix A. N >= 0.

*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.

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

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

*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 105 of file dlacpy.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page dlacpy(3) is an alias of dlacpy.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK