 LAPACK  3.4.2 LAPACK: Linear Algebra PACKage
claset.f File Reference

Go to the source code of this file.

## Functions/Subroutines

subroutine claset (UPLO, M, N, ALPHA, BETA, A, LDA)
CLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

## Function/Subroutine Documentation

 subroutine claset ( character UPLO, integer M, integer N, complex ALPHA, complex BETA, complex, dimension( lda, * ) A, integer LDA )

CLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

Download CLASET + dependencies [TGZ] [ZIP] [TXT]
Purpose:
``` CLASET initializes a 2-D array A to BETA on the diagonal and
ALPHA on the offdiagonals.```
Parameters:
 [in] 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.``` [in] M ``` M is INTEGER On entry, M specifies the number of rows of A.``` [in] N ``` N is INTEGER On entry, N specifies the number of columns of A.``` [in] ALPHA ``` ALPHA is COMPLEX All the offdiagonal array elements are set to ALPHA.``` [in] BETA ``` BETA is COMPLEX All the diagonal array elements are set to BETA.``` [in,out] A ``` A is COMPLEX 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)``` [in] LDA ``` LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).```
Date:
September 2012

Definition at line 107 of file claset.f.

Here is the call graph for this function: