# zlaset.f - Man Page

SRC/zlaset.f

## Synopsis

### Functions/Subroutines

subroutine zlaset (uplo, m, n, alpha, beta, a, lda)
ZLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

## Function/Subroutine Documentation

### subroutine zlaset (character uplo, integer m, integer n, complex*16 alpha, complex*16 beta, complex*16, dimension( lda, * ) a, integer lda)

ZLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

Purpose:

``` ZLASET initializes a 2-D array A to BETA on the diagonal and
ALPHA on the offdiagonals.```
Parameters

UPLO

```          UPLO is CHARACTER*1
Specifies the part of the matrix A to be set.
= 'U':      Upper triangular part is set. The lower triangle
is unchanged.
= 'L':      Lower triangular part is set. The upper triangle
is unchanged.
Otherwise:  All of the matrix A is set.```

M

```          M is INTEGER
On entry, M specifies the number of rows of A.```

N

```          N is INTEGER
On entry, N specifies the number of columns of A.```

ALPHA

```          ALPHA is COMPLEX*16
All the offdiagonal array elements are set to ALPHA.```

BETA

```          BETA is COMPLEX*16
All the diagonal array elements are set to BETA.```

A

```          A is COMPLEX*16 array, dimension (LDA,N)
On entry, the m by n matrix A.
On exit, A(i,j) = ALPHA, 1 <= i <= m, 1 <= j <= n, i.ne.j;
A(i,i) = BETA , 1 <= i <= min(m,n)```

LDA

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

Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Definition at line 105 of file zlaset.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK