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