NAME

TESTING/LIN/srzt01.f

SYNOPSIS

Functions/Subroutines

real function srzt01 (m, n, a, af, lda, tau, work, lwork)
SRZT01

Function/Subroutine Documentation

real function srzt01 (integer m, integer n, real, dimension( lda, * ) a, real, dimension( lda, * ) af, integer lda, real, dimension( * ) tau, real, dimension( lwork ) work, integer lwork)

SRZT01

Purpose:



 SRZT01 returns


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


 for an upper trapezoidal A that was factored with STZRZF.

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 REAL array, dimension (LDA,N)


          The original upper trapezoidal M by N matrix A.



          AF is REAL array, dimension (LDA,N)


          The output of STZRZF 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 REAL array, dimension (M)


          Details of the Householder transformations as returned by


          STZRZF.

WORK



          WORK is REAL array, dimension (LWORK)

LWORK



          LWORK is INTEGER


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

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 96 of file srzt01.f.

Author

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