NAME

TESTING/LIN/crzt01.f

SYNOPSIS

Functions/Subroutines

real function crzt01 (m, n, a, af, lda, tau, work, lwork)
CRZT01

Function/Subroutine Documentation

real function crzt01 (integer m, integer n, complex, dimension( lda, * ) a, complex, dimension( lda, * ) af, integer lda, complex, dimension( * ) tau, complex, dimension( lwork ) work, integer lwork)

CRZT01

Purpose:



 CRZT01 returns


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


 for an upper trapezoidal A that was factored with CTZRZF.

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 array, dimension (LDA,N)


          The original upper trapezoidal M by N matrix A.



          AF is COMPLEX array, dimension (LDA,N)


          The output of CTZRZF 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 array, dimension (M)


          Details of the  Householder transformations as returned by


          CTZRZF.

WORK



          WORK is COMPLEX 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 crzt01.f.

Author

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