crzt01.f - Man Page

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

CRZT01

Purpose:

 CRZT01 returns
      || A - R*Q || / ( M * eps * ||A|| )
 for an upper trapezoidal A that was factored with CTZRZF.

Parameters

M

          M is INTEGER
          The number of rows of the matrices A and AF.

N

          N is INTEGER
          The number of columns of the matrices A and AF.

A

          A is COMPLEX array, dimension (LDA,N)
          The original upper trapezoidal M by N matrix A.

AF

          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.