zlaset.f(3)

zlaset.f3

Usage

Functions/Subroutines

subroutine zlaset (uplo, m, n, alpha, beta, a, lda)
ZLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

Function/Subroutine Documentation

subroutine zlaset (character uplo, integer m, integer n, complex*16 alpha, complex*16 beta, complex*16, dimension( lda, * ) a, integer lda)

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

Purpose:

!>
!> ZLASET 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*16
!>          All the offdiagonal array elements are set to ALPHA.
!> 

BETA

!>          BETA is COMPLEX*16
!>          All the diagonal array elements are set to BETA.
!> 

A

!>          A is COMPLEX*16 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.

Definition at line 105 of file zlaset.f.

Releases

4 releases since Debian 7 (Wheezy); the text changed 3 times.

  1. 7
  2. 8
  3. 9
  4. Arch

Author

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