drqt01.f3

!>
!> DRQT01 tests DGERQF, which computes the RQ factorization of an m-by-n
!> matrix A, and partially tests DORGRQ which forms the n-by-n
!> orthogonal matrix Q.
!>
!> DRQT01 compares R with A*Q', and checks that Q is orthogonal.
!> 

M

!>          M is INTEGER
!>          The number of rows of the matrix A.  M >= 0.
!> 

N

!>          N is INTEGER
!>          The number of columns of the matrix A.  N >= 0.
!> 

A

!>          A is DOUBLE PRECISION array, dimension (LDA,N)
!>          The m-by-n matrix A.
!> 

AF

!>          AF is DOUBLE PRECISION array, dimension (LDA,N)
!>          Details of the RQ factorization of A, as returned by DGERQF.
!>          See DGERQF for further details.
!> 

Q

!>          Q is DOUBLE PRECISION array, dimension (LDA,N)
!>          The n-by-n orthogonal matrix Q.
!> 

R

!>          R is DOUBLE PRECISION array, dimension (LDA,max(M,N))
!> 

LDA

!>          LDA is INTEGER
!>          The leading dimension of the arrays A, AF, Q and L.
!>          LDA >= max(M,N).
!> 

TAU

!>          TAU is DOUBLE PRECISION array, dimension (min(M,N))
!>          The scalar factors of the elementary reflectors, as returned
!>          by DGERQF.
!> 

WORK

!>          WORK is DOUBLE PRECISION array, dimension (LWORK)
!> 

LWORK

!>          LWORK is INTEGER
!>          The dimension of the array WORK.
!> 

RWORK

!>          RWORK is DOUBLE PRECISION array, dimension (max(M,N))
!> 

RESULT

!>          RESULT is DOUBLE PRECISION array, dimension (2)
!>          The test ratios:
!>          RESULT(1) = norm( R - A*Q' ) / ( N * norm(A) * EPS )
!>          RESULT(2) = norm( I - Q*Q' ) / ( N * EPS )
!> 

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