262 lines
6.9 KiB
Fortran
262 lines
6.9 KiB
Fortran
*> \brief \b DDRVRF2
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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 DDRVRF2( NOUT, NN, NVAL, A, LDA, ARF, AP, ASAV )
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*
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* .. Scalar Arguments ..
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* INTEGER LDA, NN, NOUT
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* ..
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* .. Array Arguments ..
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* INTEGER NVAL( NN )
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* DOUBLE PRECISION A( LDA, * ), ARF( * ), AP(*), ASAV( LDA, * )
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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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*> DDRVRF2 tests the LAPACK RFP conversion routines.
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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] NOUT
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*> \verbatim
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*> NOUT is INTEGER
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*> The unit number for output.
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*> \endverbatim
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*>
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*> \param[in] NN
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*> \verbatim
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*> NN is INTEGER
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*> The number of values of N contained in the vector NVAL.
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*> \endverbatim
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*>
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*> \param[in] NVAL
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*> \verbatim
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*> NVAL is INTEGER array, dimension (NN)
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*> The values of the matrix dimension N.
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*> \endverbatim
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*>
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*> \param[out] A
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*> \verbatim
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*> A is DOUBLE PRECISION array, dimension (LDA,NMAX)
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*> \endverbatim
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*>
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*> \param[in] LDA
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*> \verbatim
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*> LDA is INTEGER
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*> The leading dimension of the array A. LDA >= max(1,NMAX).
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*> \endverbatim
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*>
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*> \param[out] ARF
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*> \verbatim
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*> ARF is DOUBLE PRECISION array, dimension ((NMAX*(NMAX+1))/2).
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*> \endverbatim
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*>
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*> \param[out] AP
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*> \verbatim
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*> AP is DOUBLE PRECISION array, dimension ((NMAX*(NMAX+1))/2).
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*> \endverbatim
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*>
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*> \param[out] ASAV
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*> \verbatim
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*> ASAV is DOUBLE PRECISION array, dimension (LDA,NMAX)
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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 DDRVRF2( NOUT, NN, NVAL, A, LDA, ARF, AP, ASAV )
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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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INTEGER LDA, NN, NOUT
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* ..
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* .. Array Arguments ..
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INTEGER NVAL( NN )
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DOUBLE PRECISION A( LDA, * ), ARF( * ), AP(*), ASAV( LDA, * )
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* ..
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*
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* =====================================================================
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* ..
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* .. Local Scalars ..
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LOGICAL LOWER, OK1, OK2
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CHARACTER UPLO, CFORM
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INTEGER I, IFORM, IIN, INFO, IUPLO, J, N,
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+ NERRS, NRUN
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* ..
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* .. Local Arrays ..
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CHARACTER UPLOS( 2 ), FORMS( 2 )
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INTEGER ISEED( 4 ), ISEEDY( 4 )
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* ..
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* .. External Functions ..
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DOUBLE PRECISION DLARND
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EXTERNAL DLARND
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* ..
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* .. External Subroutines ..
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EXTERNAL DTFTTR, DTFTTP, DTRTTF, DTRTTP, DTPTTR, DTPTTF
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* ..
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* .. Scalars in Common ..
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CHARACTER*32 SRNAMT
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* ..
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* .. Common blocks ..
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Data statements ..
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DATA ISEEDY / 1988, 1989, 1990, 1991 /
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DATA UPLOS / 'U', 'L' /
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DATA FORMS / 'N', 'T' /
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* ..
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* .. Executable Statements ..
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*
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* Initialize constants and the random number seed.
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*
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NRUN = 0
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NERRS = 0
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INFO = 0
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DO 10 I = 1, 4
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ISEED( I ) = ISEEDY( I )
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10 CONTINUE
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*
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DO 120 IIN = 1, NN
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*
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N = NVAL( IIN )
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*
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* Do first for UPLO = 'U', then for UPLO = 'L'
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*
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DO 110 IUPLO = 1, 2
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*
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UPLO = UPLOS( IUPLO )
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LOWER = .TRUE.
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IF ( IUPLO.EQ.1 ) LOWER = .FALSE.
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*
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* Do first for CFORM = 'N', then for CFORM = 'T'
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*
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DO 100 IFORM = 1, 2
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*
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CFORM = FORMS( IFORM )
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*
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NRUN = NRUN + 1
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*
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DO J = 1, N
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DO I = 1, N
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A( I, J) = DLARND( 2, ISEED )
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END DO
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END DO
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*
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SRNAMT = 'DTRTTF'
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CALL DTRTTF( CFORM, UPLO, N, A, LDA, ARF, INFO )
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*
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SRNAMT = 'DTFTTP'
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CALL DTFTTP( CFORM, UPLO, N, ARF, AP, INFO )
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*
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SRNAMT = 'DTPTTR'
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CALL DTPTTR( UPLO, N, AP, ASAV, LDA, INFO )
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*
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OK1 = .TRUE.
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IF ( LOWER ) THEN
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DO J = 1, N
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DO I = J, N
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IF ( A(I,J).NE.ASAV(I,J) ) THEN
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OK1 = .FALSE.
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END IF
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END DO
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END DO
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ELSE
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DO J = 1, N
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DO I = 1, J
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IF ( A(I,J).NE.ASAV(I,J) ) THEN
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OK1 = .FALSE.
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END IF
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END DO
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END DO
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END IF
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*
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NRUN = NRUN + 1
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*
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SRNAMT = 'DTRTTP'
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CALL DTRTTP( UPLO, N, A, LDA, AP, INFO )
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*
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SRNAMT = 'DTPTTF'
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CALL DTPTTF( CFORM, UPLO, N, AP, ARF, INFO )
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*
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SRNAMT = 'DTFTTR'
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CALL DTFTTR( CFORM, UPLO, N, ARF, ASAV, LDA, INFO )
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*
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OK2 = .TRUE.
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IF ( LOWER ) THEN
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DO J = 1, N
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DO I = J, N
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IF ( A(I,J).NE.ASAV(I,J) ) THEN
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OK2 = .FALSE.
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END IF
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END DO
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END DO
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ELSE
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DO J = 1, N
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DO I = 1, J
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IF ( A(I,J).NE.ASAV(I,J) ) THEN
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OK2 = .FALSE.
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END IF
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END DO
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END DO
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END IF
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*
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IF (( .NOT.OK1 ).OR.( .NOT.OK2 )) THEN
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IF( NERRS.EQ.0 ) THEN
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WRITE( NOUT, * )
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WRITE( NOUT, FMT = 9999 )
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END IF
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WRITE( NOUT, FMT = 9998 ) N, UPLO, CFORM
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NERRS = NERRS + 1
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END IF
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*
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100 CONTINUE
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110 CONTINUE
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120 CONTINUE
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*
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* Print a summary of the results.
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*
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IF ( NERRS.EQ.0 ) THEN
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WRITE( NOUT, FMT = 9997 ) NRUN
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ELSE
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WRITE( NOUT, FMT = 9996 ) NERRS, NRUN
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END IF
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*
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9999 FORMAT( 1X, ' *** Error(s) while testing the RFP conversion',
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+ ' routines ***')
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9998 FORMAT( 1X, ' Error in RFP,conversion routines N=',I5,
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+ ' UPLO=''', A1, ''', FORM =''',A1,'''')
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9997 FORMAT( 1X, 'All tests for the RFP conversion routines passed ( ',
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+ I5,' tests run)')
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9996 FORMAT( 1X, 'RFP conversion routines: ',I5,' out of ',I5,
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+ ' error message recorded')
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*
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RETURN
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*
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* End of DDRVRF2
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*
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END
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