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


 ALPHA on the offdiagonals.

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).

Univ. of Tennessee

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NAG Ltd.

September 2012