zrzt01.f - Man Page

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

ZRZT01

Purpose:

 ZRZT01 returns
      || A - R*Q || / ( M * eps * ||A|| )
 for an upper trapezoidal A that was factored with ZTZRZF.

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

AF

          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.