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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 (characterUPLO, integerM, integerN, complex*16ALPHA, complex*16BETA, complex*16, dimension( lda, * )A, integerLDA)

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.
Date:
September 2012
Definition at line 107 of file zlaset.f.

# Author

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