subroutine clsets	(	integer	M,
		integer	P,
		integer	N,
		complex, dimension( lda, * )	A,
		complex, dimension( lda, * )	AF,
		integer	LDA,
		complex, dimension( ldb, * )	B,
		complex, dimension( ldb, * )	BF,
		integer	LDB,
		complex, dimension( * )	C,
		complex, dimension( * )	CF,
		complex, dimension( * )	D,
		complex, dimension( * )	DF,
		complex, dimension( * )	X,
		complex, dimension( lwork )	WORK,
		integer	LWORK,
		real, dimension( * )	RWORK,
		real, dimension( 2 )	RESULT
	)

CLSETS

Purpose:

 CLSETS tests CGGLSE - a subroutine for solving linear equality
 constrained least square problem (LSE).

Parameters

[in]	M	M is INTEGER The number of rows of the matrix A. M >= 0.
[in]	P	P is INTEGER The number of rows of the matrix B. P >= 0.
[in]	N	N is INTEGER The number of columns of the matrices A and B. N >= 0.
[in]	A	A is COMPLEX array, dimension (LDA,N) The M-by-N matrix A.
[out]	AF	AF is COMPLEX array, dimension (LDA,N)
[in]	LDA	LDA is INTEGER The leading dimension of the arrays A, AF, Q and R. LDA >= max(M,N).
[in]	B	B is COMPLEX array, dimension (LDB,N) The P-by-N matrix A.
[out]	BF	BF is COMPLEX array, dimension (LDB,N)
[in]	LDB	LDB is INTEGER The leading dimension of the arrays B, BF, V and S. LDB >= max(P,N).
[in]	C	C is COMPLEX array, dimension( M ) the vector C in the LSE problem.
[out]	CF	CF is COMPLEX array, dimension( M )
[in]	D	D is COMPLEX array, dimension( P ) the vector D in the LSE problem.
[out]	DF	DF is COMPLEX array, dimension( P )
[out]	X	X is COMPLEX array, dimension( N ) solution vector X in the LSE problem.
[out]	WORK	WORK is COMPLEX array, dimension (LWORK)
[in]	LWORK	LWORK is INTEGER The dimension of the array WORK.
[out]	RWORK	RWORK is REAL array, dimension (M)
[out]	RESULT	RESULT is REAL array, dimension (2) The test ratios: RESULT(1) = norm( A*x - c )/ norm(A)*norm(X)*EPS RESULT(2) = norm( B*x - d )/ norm(B)*norm(X)*EPS

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date

November 2011

Definition at line 157 of file clsets.f.

*
*  -- LAPACK test routine (version 3.4.0) --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*     November 2011
*
*     .. Scalar Arguments ..
      INTEGER            lda, ldb, lwork, m, p, n
*     ..
*     .. Array Arguments ..
      REAL               result( 2 ), rwork( * )
      COMPLEX            a( lda, * ), af( lda, * ), b( ldb, * ),
     $                   bf( ldb, * ), c( * ), d( * ), cf( * ),
     $                   df( * ), work( lwork ), x( * )
*
*  ====================================================================
*
*     ..
*     .. Local Scalars ..
      INTEGER            info
*     ..
*     .. External Subroutines ..
      EXTERNAL           cgglse, clacpy, cget02
*     ..
*     .. Executable Statements ..
*
*     Copy the matrices A and B to the arrays AF and BF,
*     and the vectors C and D to the arrays CF and DF,
*
      CALL clacpy( 'Full', m, n, a, lda, af, lda )
      CALL clacpy( 'Full', p, n, b, ldb, bf, ldb )
      CALL ccopy( m, c, 1, cf, 1 )
      CALL ccopy( p, d, 1, df, 1 )
*
*     Solve LSE problem
*
      CALL cgglse( m, n, p, af, lda, bf, ldb, cf, df, x,
     $             work, lwork, info )
*
*     Test the residual for the solution of LSE
*
*     Compute RESULT(1) = norm( A*x - c ) / norm(A)*norm(X)*EPS
*
      CALL ccopy( m, c, 1, cf, 1 )
      CALL ccopy( p, d, 1, df, 1 )
      CALL cget02( 'No transpose', m, n, 1, a, lda, x, n, cf, m,
     $             rwork, result( 1 ) )
*
*     Compute result(2) = norm( B*x - d ) / norm(B)*norm(X)*EPS
*
      CALL cget02( 'No transpose', p, n, 1, b, ldb, x, n, df, p,
     $             rwork, result( 2 ) )
*
      RETURN
*
*     End of CLSETS
*

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