# crzt01.f - Man Page

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*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**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page crzt01(3) is an alias of crzt01.f(3).

Tue Nov 28 2023 12:08:42 Version 3.12.0 LAPACK