NAME

TESTING/LIN/zrzt01.f

SYNOPSIS

Functions/Subroutines

double precision function zrzt01 (m, n, a, af, lda, tau, work, lwork)
ZRZT01

Function/Subroutine Documentation

double precision function zrzt01 (integer m, integer n, complex16, dimension( lda, ) a, complex16, dimension( lda, ) af, integer lda, complex16, dimension( ) tau, complex*16, dimension( lwork ) work, integer lwork)

ZRZT01

Purpose:



 ZRZT01 returns


      || A - R*Q || / ( M * eps * ||A|| )


 for an upper trapezoidal A that was factored with ZTZRZF.

Parameters



          M is INTEGER


          The number of rows of the matrices A and AF.



          N is INTEGER


          The number of columns of the matrices A and AF.



          A is COMPLEX*16 array, dimension (LDA,N)


          The original upper trapezoidal M by N matrix A.



          AF is COMPLEX*16 array, dimension (LDA,N)


          The output of ZTZRZF for input matrix A.


          The lower triangle is not referenced.

LDA



          LDA is INTEGER


          The leading dimension of the arrays A and 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


          The length of the array WORK.  LWORK >= m*n + m.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 96 of file zrzt01.f.

Author