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*> \brief \b DERRORHR_COL
*
* =========== DOCUMENTATION ===========
*
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
* Definition:
* ===========
*
* SUBROUTINE DERRORHR_COL( PATH, NUNIT )
*
* .. Scalar Arguments ..
* CHARACTER*3 PATH
* INTEGER NUNIT
* ..
*
*
*> \par Purpose:
* =============
*>
*> \verbatim
*>
*> DERRORHR_COL tests the error exits for DORHR_COL that does
*> Householder reconstruction from the output of tall-skinny
*> factorization DLATSQR.
*> \endverbatim
*
* Arguments:
* ==========
*
*> \param[in] PATH
*> \verbatim
*> PATH is CHARACTER*3
*> The LAPACK path name for the routines to be tested.
*> \endverbatim
*>
*> \param[in] NUNIT
*> \verbatim
*> NUNIT is INTEGER
*> The unit number for output.
*> \endverbatim
*
* Authors:
* ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup double_lin
*
* =====================================================================
SUBROUTINE DERRORHR_COL( PATH, NUNIT )
IMPLICIT NONE
*
* -- LAPACK test routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
* .. Scalar Arguments ..
CHARACTER(LEN=3) PATH
INTEGER NUNIT
* ..
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 2 )
* ..
* .. Local Scalars ..
INTEGER I, INFO, J
* ..
* .. Local Arrays ..
DOUBLE PRECISION A( NMAX, NMAX ), T( NMAX, NMAX ), D(NMAX)
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, DORHR_COL
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER(LEN=32) SRNAMT
INTEGER INFOT, NOUT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
* ..
* .. Intrinsic Functions ..
INTRINSIC DBLE
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
*
* Set the variables to innocuous values.
*
DO J = 1, NMAX
DO I = 1, NMAX
A( I, J ) = 1.D+0 / DBLE( I+J )
T( I, J ) = 1.D+0 / DBLE( I+J )
END DO
D( J ) = 0.D+0
END DO
OK = .TRUE.
*
* Error exits for Householder reconstruction
*
* DORHR_COL
*
SRNAMT = 'DORHR_COL'
*
INFOT = 1
CALL DORHR_COL( -1, 0, 1, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
INFOT = 2
CALL DORHR_COL( 0, -1, 1, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
CALL DORHR_COL( 1, 2, 1, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
INFOT = 3
CALL DORHR_COL( 0, 0, -1, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
CALL DORHR_COL( 0, 0, 0, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
INFOT = 5
CALL DORHR_COL( 0, 0, 1, A, -1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
CALL DORHR_COL( 0, 0, 1, A, 0, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
CALL DORHR_COL( 2, 0, 1, A, 1, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
INFOT = 7
CALL DORHR_COL( 0, 0, 1, A, 1, T, -1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
CALL DORHR_COL( 0, 0, 1, A, 1, T, 0, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
CALL DORHR_COL( 4, 3, 2, A, 4, T, 1, D, INFO )
CALL CHKXER( 'DORHR_COL', INFOT, NOUT, LERR, OK )
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of DERRORHR_COL
*
END
|
