# dlacpy.f - Man Page

SRC/dlacpy.f

## 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.

Definition at line **102** 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 28 2023 12:08:42 Version 3.12.0 LAPACK