srzt01.f - Man Page

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

SRZT01

Purpose:

 SRZT01 returns
      || A - R*Q || / ( M * eps * ||A|| )
 for an upper trapezoidal A that was factored with STZRZF.

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

AF

          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.