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.
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 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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Definition at line 108 of file zlaset.f.
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