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RedHat 9 (Linux i386) - man page for dlaset (redhat section l)

DLASET(l)					)					DLASET(l)

NAME
       DLASET  - initialize an m-by-n matrix A to BETA on the diagonal and ALPHA on the offdiago-
       nals

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

	   CHARACTER	  UPLO

	   INTEGER	  LDA, M, N

	   DOUBLE	  PRECISION ALPHA, BETA

	   DOUBLE	  PRECISION A( LDA, * )

PURPOSE
       DLASET initializes an m-by-n matrix A to BETA on the diagonal and ALPHA on  the	offdiago-
       nals.

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) DOUBLE PRECISION
	       The constant to which the offdiagonal elements are to be set.

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

       A       (input/output) DOUBLE PRECISION 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).

LAPACK version 3.0			   15 June 2000 				DLASET(l)


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