claset(3)

NAME

CLASET - initialize a 2-D array A to BETA on the diagonal

and ALPHA on the offdiagonals

SYNOPSIS

SUBROUTINE CLASET( UPLO, M, N, ALPHA, BETA, A, LDA )
    CHARACTER      UPLO
    INTEGER        LDA, M, N
    COMPLEX        ALPHA, BETA
    COMPLEX        A( LDA, * )

PURPOSE

CLASET initializes a 2-D array A to BETA on the diagonal

and ALPHA on the offdiagonals.

ARGUMENTS

UPLO (input) CHARACTER*1

Specifies the part of the matrix A to be set. =

'U': Upper triangular part is set. The lower triangle is un

changed. = 'L': Lower triangular part is set. The upper

triangle is unchanged. Otherwise: All of the matrix A is set.

M (input) INTEGER

On entry, M specifies the number of rows of A.

N (input) INTEGER

On entry, N specifies the number of columns of A.

ALPHA (input) COMPLEX

All the offdiagonal array elements are set to AL

PHA.

BETA (input) COMPLEX

All the diagonal array elements are set to BETA.

A (input/output) COMPLEX 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 (input) INTEGER

The leading dimension of the array A. LDA >=

max(1,M).

LAPACK version 3.0 15 June 2000

CLASET(3)