NAME

TESTING/LIN/zrzt02.f

SYNOPSIS

Functions/Subroutines

double precision function zrzt02 (m, n, af, lda, tau, work, lwork)
ZRZT02

Function/Subroutine Documentation

double precision function zrzt02 (integer m, integer n, complex16, dimension( lda, ) af, integer lda, complex16, dimension( ) tau, complex*16, dimension( lwork ) work, integer lwork)

ZRZT02

Purpose:

!>
!> ZRZT02 returns
!>      || I - Q'*Q || / ( M * eps)
!> where the matrix Q is defined by the Householder transformations
!> generated by ZTZRZF.
!>

Parameters

!>          M is INTEGER
!>          The number of rows of the matrix AF.
!>

!>          N is INTEGER
!>          The number of columns of the matrix AF.
!>

!>          AF is COMPLEX*16 array, dimension (LDA,N)
!>          The output of ZTZRZF.
!>

LDA

!>          LDA is INTEGER
!>          The leading dimension of the array AF.
!>

TAU

!>          TAU is COMPLEX*16 array, dimension (M)
!>          Details of the Householder transformations as returned by
!>          ZTZRZF.
!>

WORK

!>          WORK is COMPLEX*16 array, dimension (LWORK)
!>

LWORK

!>          LWORK is INTEGER
!>          Length of WORK array. LWORK >= N*N+N.
!>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 89 of file zrzt02.f.

Author

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Version 3.12.0

LAPACK