claset.f man page

claset.f —

Synopsis

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.  

Purpose:

 CLASET initializes a 2-D array 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 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
          All the offdiagonal array elements are set to ALPHA.

BETA

          BETA is COMPLEX
          All the diagonal array elements are set to BETA.

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)

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 108 of file claset.f.

Author

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Referenced By

The man page claset(3) is an alias of claset.f(3).

Sat Jun 24 2017 Version 3.7.1 LAPACK