dlaset.f - Online Linux Manual Page

Section : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEdlaset.f
SYNOPSIS
Functions/Subroutinessubroutine dlaset (UPLO, M, N, ALPHA, BETA, A, LDA)
DLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values​.
Function/Subroutine Documentation
subroutine dlaset (character UPLO, integer M, integer N, double precision ALPHA, double precision BETA, double precision, dimension( lda, * ) A, integer LDA)DLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values​. Purpose: DLASET initializes an m-by-n matrix A to BETA on the diagonal and ALPHA on the offdiagonals.Parameters: UPLO UPLO is 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 M is INTEGER The number of rows of the matrix A. M >= 0.
N N is INTEGER The number of columns of the matrix A. N >= 0.
ALPHA ALPHA is DOUBLE PRECISION The constant to which the offdiagonal elements are to be set.
BETA BETA is DOUBLE PRECISION The constant to which the diagonal elements are to be set.
A A is 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 LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).Author: Univ​. of Tennessee Univ​. of California Berkeley Univ​. of Colorado Denver NAG Ltd​. Date: December 2016 Definition at line 112 of file dlaset​.f​.
AuthorGenerated automatically by Doxygen for LAPACK from the source code​. 0
Johanes Gumabo
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