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LAPACK version 3.0
slaset(3)

PURPOSE
  SLASET - initialize an m-by-n matrix A to BETA on the diagonal and ALPHA on
  the offdiagonals

SYNTAX
  SUBROUTINE SLASET( UPLO, M, N, ALPHA, BETA, A, LDA )

      CHARACTER	     UPLO

      INTEGER	     LDA, M, N

      REAL	     ALPHA, BETA

      REAL	     A( LDA, * )

DESCRIPTION
  SLASET initializes an m-by-n matrix 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 strictly lower triangular part of A is
	  not changed.	= 'L':	    Lower triangular part is set; the
	  strictly upper triangular part of A is not changed.  Otherwise:
	  All of the matrix A is set.

  M	  (input) INTEGER
	  The number of rows of the matrix A.  M >= 0.

  N	  (input) INTEGER
	  The number of columns of the matrix A.  N >= 0.

  ALPHA	  (input) REAL
	  The constant to which the offdiagonal elements are to be set.

  BETA	  (input) REAL
	  The constant to which the diagonal elements are to be set.

  A	  (input/output) REAL array, dimension (LDA,N)
	  On exit, the leading m-by-n submatrix of A is set as follows:

	  if UPLO = 'U', A(i,j) = ALPHA, 1<=i<=j-1, 1<=j<=n, if UPLO = 'L',
	  A(i,j) = ALPHA, j+1<=i<=m, 1<=j<=n, otherwise,     A(i,j) = ALPHA,
	  1<=i<=m, 1<=j<=n, i.ne.j,

	  and, for all UPLO, A(i,i) = BETA, 1<=i<=min(m,n).

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