zlaset(3F)

NAME
     ZLASET - initialize a 2-D array A to BETA on the diagonal and ALPHA on
     the offdiagonals

SYNOPSIS
     SUBROUTINE ZLASET( UPLO, M, N, ALPHA, BETA, A, LDA )

         CHARACTER      UPLO

         INTEGER        LDA, M, N

         COMPLEX*16     ALPHA, BETA

         COMPLEX*16     A( LDA, * )

PURPOSE
     ZLASET 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 unchanged.  = '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*16
             All the offdiagonal array elements are set to ALPHA.

     BETA    (input) COMPLEX*16
             All the diagonal array elements are set to BETA.

     A       (input/output) 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     (input) INTEGER
             The leading dimension of the array A.  LDA >= max(1,M).