ztzt02.f File Reference

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Functions/Subroutines
double precision function	ztzt02 (M, N, AF, LDA, TAU, WORK, LWORK)
	ZTZT02 More...

Function/Subroutine Documentation

double precision function ztzt02	(	integer	M,
		integer	N,
		complex*16, dimension( lda, * )	AF,
		integer	LDA,
		complex*16, dimension( * )	TAU,
		complex*16, dimension( lwork )	WORK,
		integer	LWORK
	)

ZTZT02

Purpose:

 ZTZT02 returns
      || I - Q'*Q || / ( M * eps)
 where the matrix Q is defined by the Householder transformations
 generated by ZTZRQF.

Parameters

[in]	M	M is INTEGER The number of rows of the matrix AF.
[in]	N	N is INTEGER The number of columns of the matrix AF.
[in]	AF	AF is COMPLEX*16 array, dimension (LDA,N) The output of ZTZRQF.
[in]	LDA	LDA is INTEGER The leading dimension of the array AF.
[in]	TAU	TAU is COMPLEX*16 array, dimension (M) Details of the Householder transformations as returned by ZTZRQF.
[out]	WORK	WORK is COMPLEX*16 array, dimension (LWORK)
[in]	LWORK	LWORK is INTEGER length of WORK array. Must be >= N*N+N

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date

November 2011

Definition at line 91 of file ztzt02.f.

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