602 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			Fortran
		
	
	
	
			
		
		
	
	
			602 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			Fortran
		
	
	
	
| *> \brief \b DCHKGE
 | |
| *
 | |
| *  =========== DOCUMENTATION ===========
 | |
| *
 | |
| * Online html documentation available at 
 | |
| *            http://www.netlib.org/lapack/explore-html/ 
 | |
| *
 | |
| *  Definition:
 | |
| *  ===========
 | |
| *
 | |
| *       SUBROUTINE DCHKGE( DOTYPE, NM, MVAL, NN, NVAL, NNB, NBVAL, NNS,
 | |
| *                          NSVAL, THRESH, TSTERR, NMAX, A, AFAC, AINV, B,
 | |
| *                          X, XACT, WORK, RWORK, IWORK, NOUT )
 | |
| * 
 | |
| *       .. Scalar Arguments ..
 | |
| *       LOGICAL            TSTERR
 | |
| *       INTEGER            NM, NMAX, NN, NNB, NNS, NOUT
 | |
| *       DOUBLE PRECISION   THRESH
 | |
| *       ..
 | |
| *       .. Array Arguments ..
 | |
| *       LOGICAL            DOTYPE( * )
 | |
| *       INTEGER            IWORK( * ), MVAL( * ), NBVAL( * ), NSVAL( * ),
 | |
| *      $                   NVAL( * )
 | |
| *       DOUBLE PRECISION   A( * ), AFAC( * ), AINV( * ), B( * ),
 | |
| *      $                   RWORK( * ), WORK( * ), X( * ), XACT( * )
 | |
| *       ..
 | |
| *  
 | |
| *
 | |
| *> \par Purpose:
 | |
| *  =============
 | |
| *>
 | |
| *> \verbatim
 | |
| *>
 | |
| *> DCHKGE tests DGETRF, -TRI, -TRS, -RFS, and -CON.
 | |
| *> \endverbatim
 | |
| *
 | |
| *  Arguments:
 | |
| *  ==========
 | |
| *
 | |
| *> \param[in] DOTYPE
 | |
| *> \verbatim
 | |
| *>          DOTYPE is LOGICAL array, dimension (NTYPES)
 | |
| *>          The matrix types to be used for testing.  Matrices of type j
 | |
| *>          (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =
 | |
| *>          .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NM
 | |
| *> \verbatim
 | |
| *>          NM is INTEGER
 | |
| *>          The number of values of M contained in the vector MVAL.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] MVAL
 | |
| *> \verbatim
 | |
| *>          MVAL is INTEGER array, dimension (NM)
 | |
| *>          The values of the matrix row dimension M.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NN
 | |
| *> \verbatim
 | |
| *>          NN is INTEGER
 | |
| *>          The number of values of N contained in the vector NVAL.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NVAL
 | |
| *> \verbatim
 | |
| *>          NVAL is INTEGER array, dimension (NN)
 | |
| *>          The values of the matrix column dimension N.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NNB
 | |
| *> \verbatim
 | |
| *>          NNB is INTEGER
 | |
| *>          The number of values of NB contained in the vector NBVAL.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NBVAL
 | |
| *> \verbatim
 | |
| *>          NBVAL is INTEGER array, dimension (NBVAL)
 | |
| *>          The values of the blocksize NB.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NNS
 | |
| *> \verbatim
 | |
| *>          NNS is INTEGER
 | |
| *>          The number of values of NRHS contained in the vector NSVAL.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NSVAL
 | |
| *> \verbatim
 | |
| *>          NSVAL is INTEGER array, dimension (NNS)
 | |
| *>          The values of the number of right hand sides NRHS.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] THRESH
 | |
| *> \verbatim
 | |
| *>          THRESH is DOUBLE PRECISION
 | |
| *>          The threshold value for the test ratios.  A result is
 | |
| *>          included in the output file if RESULT >= THRESH.  To have
 | |
| *>          every test ratio printed, use THRESH = 0.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] TSTERR
 | |
| *> \verbatim
 | |
| *>          TSTERR is LOGICAL
 | |
| *>          Flag that indicates whether error exits are to be tested.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NMAX
 | |
| *> \verbatim
 | |
| *>          NMAX is INTEGER
 | |
| *>          The maximum value permitted for M or N, used in dimensioning
 | |
| *>          the work arrays.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] A
 | |
| *> \verbatim
 | |
| *>          A is DOUBLE PRECISION array, dimension (NMAX*NMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] AFAC
 | |
| *> \verbatim
 | |
| *>          AFAC is DOUBLE PRECISION array, dimension (NMAX*NMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] AINV
 | |
| *> \verbatim
 | |
| *>          AINV is DOUBLE PRECISION array, dimension (NMAX*NMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] B
 | |
| *> \verbatim
 | |
| *>          B is DOUBLE PRECISION array, dimension (NMAX*NSMAX)
 | |
| *>          where NSMAX is the largest entry in NSVAL.
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] X
 | |
| *> \verbatim
 | |
| *>          X is DOUBLE PRECISION array, dimension (NMAX*NSMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] XACT
 | |
| *> \verbatim
 | |
| *>          XACT is DOUBLE PRECISION array, dimension (NMAX*NSMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] WORK
 | |
| *> \verbatim
 | |
| *>          WORK is DOUBLE PRECISION array, dimension
 | |
| *>                      (NMAX*max(3,NSMAX))
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] RWORK
 | |
| *> \verbatim
 | |
| *>          RWORK is DOUBLE PRECISION array, dimension
 | |
| *>                      (max(2*NMAX,2*NSMAX+NWORK))
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[out] IWORK
 | |
| *> \verbatim
 | |
| *>          IWORK is INTEGER array, dimension (2*NMAX)
 | |
| *> \endverbatim
 | |
| *>
 | |
| *> \param[in] NOUT
 | |
| *> \verbatim
 | |
| *>          NOUT 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. 
 | |
| *
 | |
| *> \date November 2011
 | |
| *
 | |
| *> \ingroup double_lin
 | |
| *
 | |
| *  =====================================================================
 | |
|       SUBROUTINE DCHKGE( DOTYPE, NM, MVAL, NN, NVAL, NNB, NBVAL, NNS,
 | |
|      $                   NSVAL, THRESH, TSTERR, NMAX, A, AFAC, AINV, B,
 | |
|      $                   X, XACT, WORK, RWORK, IWORK, NOUT )
 | |
| *
 | |
| *  -- 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 ..
 | |
|       LOGICAL            TSTERR
 | |
|       INTEGER            NM, NMAX, NN, NNB, NNS, NOUT
 | |
|       DOUBLE PRECISION   THRESH
 | |
| *     ..
 | |
| *     .. Array Arguments ..
 | |
|       LOGICAL            DOTYPE( * )
 | |
|       INTEGER            IWORK( * ), MVAL( * ), NBVAL( * ), NSVAL( * ),
 | |
|      $                   NVAL( * )
 | |
|       DOUBLE PRECISION   A( * ), AFAC( * ), AINV( * ), B( * ),
 | |
|      $                   RWORK( * ), WORK( * ), X( * ), XACT( * )
 | |
| *     ..
 | |
| *
 | |
| *  =====================================================================
 | |
| *
 | |
| *     .. Parameters ..
 | |
|       DOUBLE PRECISION   ONE, ZERO
 | |
|       PARAMETER          ( ONE = 1.0D+0, ZERO = 0.0D+0 )
 | |
|       INTEGER            NTYPES
 | |
|       PARAMETER          ( NTYPES = 11 )
 | |
|       INTEGER            NTESTS
 | |
|       PARAMETER          ( NTESTS = 8 )
 | |
|       INTEGER            NTRAN
 | |
|       PARAMETER          ( NTRAN = 3 )
 | |
| *     ..
 | |
| *     .. Local Scalars ..
 | |
|       LOGICAL            TRFCON, ZEROT
 | |
|       CHARACTER          DIST, NORM, TRANS, TYPE, XTYPE
 | |
|       CHARACTER*3        PATH
 | |
|       INTEGER            I, IM, IMAT, IN, INB, INFO, IOFF, IRHS, ITRAN,
 | |
|      $                   IZERO, K, KL, KU, LDA, LWORK, M, MODE, N, NB,
 | |
|      $                   NERRS, NFAIL, NIMAT, NRHS, NRUN, NT
 | |
|       DOUBLE PRECISION   AINVNM, ANORM, ANORMI, ANORMO, CNDNUM, DUMMY,
 | |
|      $                   RCOND, RCONDC, RCONDI, RCONDO
 | |
| *     ..
 | |
| *     .. Local Arrays ..
 | |
|       CHARACTER          TRANSS( NTRAN )
 | |
|       INTEGER            ISEED( 4 ), ISEEDY( 4 )
 | |
|       DOUBLE PRECISION   RESULT( NTESTS )
 | |
| *     ..
 | |
| *     .. External Functions ..
 | |
|       DOUBLE PRECISION   DGET06, DLANGE
 | |
|       EXTERNAL           DGET06, DLANGE
 | |
| *     ..
 | |
| *     .. External Subroutines ..
 | |
|       EXTERNAL           ALAERH, ALAHD, ALASUM, DERRGE, DGECON, DGERFS,
 | |
|      $                   DGET01, DGET02, DGET03, DGET04, DGET07, DGETRF,
 | |
|      $                   DGETRI, DGETRS, DLACPY, DLARHS, DLASET, DLATB4,
 | |
|      $                   DLATMS, XLAENV
 | |
| *     ..
 | |
| *     .. Intrinsic Functions ..
 | |
|       INTRINSIC          MAX, MIN
 | |
| *     ..
 | |
| *     .. Scalars in Common ..
 | |
|       LOGICAL            LERR, OK
 | |
|       CHARACTER*32       SRNAMT
 | |
|       INTEGER            INFOT, NUNIT
 | |
| *     ..
 | |
| *     .. Common blocks ..
 | |
|       COMMON             / INFOC / INFOT, NUNIT, OK, LERR
 | |
|       COMMON             / SRNAMC / SRNAMT
 | |
| *     ..
 | |
| *     .. Data statements ..
 | |
|       DATA               ISEEDY / 1988, 1989, 1990, 1991 / ,
 | |
|      $                   TRANSS / 'N', 'T', 'C' /
 | |
| *     ..
 | |
| *     .. Executable Statements ..
 | |
| *
 | |
| *     Initialize constants and the random number seed.
 | |
| *
 | |
|       PATH( 1: 1 ) = 'Double precision'
 | |
|       PATH( 2: 3 ) = 'GE'
 | |
|       NRUN = 0
 | |
|       NFAIL = 0
 | |
|       NERRS = 0
 | |
|       DO 10 I = 1, 4
 | |
|          ISEED( I ) = ISEEDY( I )
 | |
|    10 CONTINUE
 | |
| *
 | |
| *     Test the error exits
 | |
| *
 | |
|       CALL XLAENV( 1, 1 )
 | |
|       IF( TSTERR )
 | |
|      $   CALL DERRGE( PATH, NOUT )
 | |
|       INFOT = 0
 | |
|       CALL XLAENV( 2, 2 )
 | |
| *
 | |
| *     Do for each value of M in MVAL
 | |
| *
 | |
|       DO 120 IM = 1, NM
 | |
|          M = MVAL( IM )
 | |
|          LDA = MAX( 1, M )
 | |
| *
 | |
| *        Do for each value of N in NVAL
 | |
| *
 | |
|          DO 110 IN = 1, NN
 | |
|             N = NVAL( IN )
 | |
|             XTYPE = 'N'
 | |
|             NIMAT = NTYPES
 | |
|             IF( M.LE.0 .OR. N.LE.0 )
 | |
|      $         NIMAT = 1
 | |
| *
 | |
|             DO 100 IMAT = 1, NIMAT
 | |
| *
 | |
| *              Do the tests only if DOTYPE( IMAT ) is true.
 | |
| *
 | |
|                IF( .NOT.DOTYPE( IMAT ) )
 | |
|      $            GO TO 100
 | |
| *
 | |
| *              Skip types 5, 6, or 7 if the matrix size is too small.
 | |
| *
 | |
|                ZEROT = IMAT.GE.5 .AND. IMAT.LE.7
 | |
|                IF( ZEROT .AND. N.LT.IMAT-4 )
 | |
|      $            GO TO 100
 | |
| *
 | |
| *              Set up parameters with DLATB4 and generate a test matrix
 | |
| *              with DLATMS.
 | |
| *
 | |
|                CALL DLATB4( PATH, IMAT, M, N, TYPE, KL, KU, ANORM, MODE,
 | |
|      $                      CNDNUM, DIST )
 | |
| *
 | |
|                SRNAMT = 'DLATMS'
 | |
|                CALL DLATMS( M, N, DIST, ISEED, TYPE, RWORK, MODE,
 | |
|      $                      CNDNUM, ANORM, KL, KU, 'No packing', A, LDA,
 | |
|      $                      WORK, INFO )
 | |
| *
 | |
| *              Check error code from DLATMS.
 | |
| *
 | |
|                IF( INFO.NE.0 ) THEN
 | |
|                   CALL ALAERH( PATH, 'DLATMS', INFO, 0, ' ', M, N, -1,
 | |
|      $                         -1, -1, IMAT, NFAIL, NERRS, NOUT )
 | |
|                   GO TO 100
 | |
|                END IF
 | |
| *
 | |
| *              For types 5-7, zero one or more columns of the matrix to
 | |
| *              test that INFO is returned correctly.
 | |
| *
 | |
|                IF( ZEROT ) THEN
 | |
|                   IF( IMAT.EQ.5 ) THEN
 | |
|                      IZERO = 1
 | |
|                   ELSE IF( IMAT.EQ.6 ) THEN
 | |
|                      IZERO = MIN( M, N )
 | |
|                   ELSE
 | |
|                      IZERO = MIN( M, N ) / 2 + 1
 | |
|                   END IF
 | |
|                   IOFF = ( IZERO-1 )*LDA
 | |
|                   IF( IMAT.LT.7 ) THEN
 | |
|                      DO 20 I = 1, M
 | |
|                         A( IOFF+I ) = ZERO
 | |
|    20                CONTINUE
 | |
|                   ELSE
 | |
|                      CALL DLASET( 'Full', M, N-IZERO+1, ZERO, ZERO,
 | |
|      $                            A( IOFF+1 ), LDA )
 | |
|                   END IF
 | |
|                ELSE
 | |
|                   IZERO = 0
 | |
|                END IF
 | |
| *
 | |
| *              These lines, if used in place of the calls in the DO 60
 | |
| *              loop, cause the code to bomb on a Sun SPARCstation.
 | |
| *
 | |
| *               ANORMO = DLANGE( 'O', M, N, A, LDA, RWORK )
 | |
| *               ANORMI = DLANGE( 'I', M, N, A, LDA, RWORK )
 | |
| *
 | |
| *              Do for each blocksize in NBVAL
 | |
| *
 | |
|                DO 90 INB = 1, NNB
 | |
|                   NB = NBVAL( INB )
 | |
|                   CALL XLAENV( 1, NB )
 | |
| *
 | |
| *                 Compute the LU factorization of the matrix.
 | |
| *
 | |
|                   CALL DLACPY( 'Full', M, N, A, LDA, AFAC, LDA )
 | |
|                   SRNAMT = 'DGETRF'
 | |
|                   CALL DGETRF( M, N, AFAC, LDA, IWORK, INFO )
 | |
| *
 | |
| *                 Check error code from DGETRF.
 | |
| *
 | |
|                   IF( INFO.NE.IZERO )
 | |
|      $               CALL ALAERH( PATH, 'DGETRF', INFO, IZERO, ' ', M,
 | |
|      $                            N, -1, -1, NB, IMAT, NFAIL, NERRS,
 | |
|      $                            NOUT )
 | |
|                   TRFCON = .FALSE.
 | |
| *
 | |
| *+    TEST 1
 | |
| *                 Reconstruct matrix from factors and compute residual.
 | |
| *
 | |
|                   CALL DLACPY( 'Full', M, N, AFAC, LDA, AINV, LDA )
 | |
|                   CALL DGET01( M, N, A, LDA, AINV, LDA, IWORK, RWORK,
 | |
|      $                         RESULT( 1 ) )
 | |
|                   NT = 1
 | |
| *
 | |
| *+    TEST 2
 | |
| *                 Form the inverse if the factorization was successful
 | |
| *                 and compute the residual.
 | |
| *
 | |
|                   IF( M.EQ.N .AND. INFO.EQ.0 ) THEN
 | |
|                      CALL DLACPY( 'Full', N, N, AFAC, LDA, AINV, LDA )
 | |
|                      SRNAMT = 'DGETRI'
 | |
|                      NRHS = NSVAL( 1 )
 | |
|                      LWORK = NMAX*MAX( 3, NRHS )
 | |
|                      CALL DGETRI( N, AINV, LDA, IWORK, WORK, LWORK,
 | |
|      $                            INFO )
 | |
| *
 | |
| *                    Check error code from DGETRI.
 | |
| *
 | |
|                      IF( INFO.NE.0 )
 | |
|      $                  CALL ALAERH( PATH, 'DGETRI', INFO, 0, ' ', N, N,
 | |
|      $                               -1, -1, NB, IMAT, NFAIL, NERRS,
 | |
|      $                               NOUT )
 | |
| *
 | |
| *                    Compute the residual for the matrix times its
 | |
| *                    inverse.  Also compute the 1-norm condition number
 | |
| *                    of A.
 | |
| *
 | |
|                      CALL DGET03( N, A, LDA, AINV, LDA, WORK, LDA,
 | |
|      $                            RWORK, RCONDO, RESULT( 2 ) )
 | |
|                      ANORMO = DLANGE( 'O', M, N, A, LDA, RWORK )
 | |
| *
 | |
| *                    Compute the infinity-norm condition number of A.
 | |
| *
 | |
|                      ANORMI = DLANGE( 'I', M, N, A, LDA, RWORK )
 | |
|                      AINVNM = DLANGE( 'I', N, N, AINV, LDA, RWORK )
 | |
|                      IF( ANORMI.LE.ZERO .OR. AINVNM.LE.ZERO ) THEN
 | |
|                         RCONDI = ONE
 | |
|                      ELSE
 | |
|                         RCONDI = ( ONE / ANORMI ) / AINVNM
 | |
|                      END IF
 | |
|                      NT = 2
 | |
|                   ELSE
 | |
| *
 | |
| *                    Do only the condition estimate if INFO > 0.
 | |
| *
 | |
|                      TRFCON = .TRUE.
 | |
|                      ANORMO = DLANGE( 'O', M, N, A, LDA, RWORK )
 | |
|                      ANORMI = DLANGE( 'I', M, N, A, LDA, RWORK )
 | |
|                      RCONDO = ZERO
 | |
|                      RCONDI = ZERO
 | |
|                   END IF
 | |
| *
 | |
| *                 Print information about the tests so far that did not
 | |
| *                 pass the threshold.
 | |
| *
 | |
|                   DO 30 K = 1, NT
 | |
|                      IF( RESULT( K ).GE.THRESH ) THEN
 | |
|                         IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
 | |
|      $                     CALL ALAHD( NOUT, PATH )
 | |
|                         WRITE( NOUT, FMT = 9999 )M, N, NB, IMAT, K,
 | |
|      $                     RESULT( K )
 | |
|                         NFAIL = NFAIL + 1
 | |
|                      END IF
 | |
|    30             CONTINUE
 | |
|                   NRUN = NRUN + NT
 | |
| *
 | |
| *                 Skip the remaining tests if this is not the first
 | |
| *                 block size or if M .ne. N.  Skip the solve tests if
 | |
| *                 the matrix is singular.
 | |
| *
 | |
|                   IF( INB.GT.1 .OR. M.NE.N )
 | |
|      $               GO TO 90
 | |
|                   IF( TRFCON )
 | |
|      $               GO TO 70
 | |
| *
 | |
|                   DO 60 IRHS = 1, NNS
 | |
|                      NRHS = NSVAL( IRHS )
 | |
|                      XTYPE = 'N'
 | |
| *
 | |
|                      DO 50 ITRAN = 1, NTRAN
 | |
|                         TRANS = TRANSS( ITRAN )
 | |
|                         IF( ITRAN.EQ.1 ) THEN
 | |
|                            RCONDC = RCONDO
 | |
|                         ELSE
 | |
|                            RCONDC = RCONDI
 | |
|                         END IF
 | |
| *
 | |
| *+    TEST 3
 | |
| *                       Solve and compute residual for A * X = B.
 | |
| *
 | |
|                         SRNAMT = 'DLARHS'
 | |
|                         CALL DLARHS( PATH, XTYPE, ' ', TRANS, N, N, KL,
 | |
|      $                               KU, NRHS, A, LDA, XACT, LDA, B,
 | |
|      $                               LDA, ISEED, INFO )
 | |
|                         XTYPE = 'C'
 | |
| *
 | |
|                         CALL DLACPY( 'Full', N, NRHS, B, LDA, X, LDA )
 | |
|                         SRNAMT = 'DGETRS'
 | |
|                         CALL DGETRS( TRANS, N, NRHS, AFAC, LDA, IWORK,
 | |
|      $                               X, LDA, INFO )
 | |
| *
 | |
| *                       Check error code from DGETRS.
 | |
| *
 | |
|                         IF( INFO.NE.0 )
 | |
|      $                     CALL ALAERH( PATH, 'DGETRS', INFO, 0, TRANS,
 | |
|      $                                  N, N, -1, -1, NRHS, IMAT, NFAIL,
 | |
|      $                                  NERRS, NOUT )
 | |
| *
 | |
|                         CALL DLACPY( 'Full', N, NRHS, B, LDA, WORK,
 | |
|      $                               LDA )
 | |
|                         CALL DGET02( TRANS, N, N, NRHS, A, LDA, X, LDA,
 | |
|      $                               WORK, LDA, RWORK, RESULT( 3 ) )
 | |
| *
 | |
| *+    TEST 4
 | |
| *                       Check solution from generated exact solution.
 | |
| *
 | |
|                         CALL DGET04( N, NRHS, X, LDA, XACT, LDA, RCONDC,
 | |
|      $                               RESULT( 4 ) )
 | |
| *
 | |
| *+    TESTS 5, 6, and 7
 | |
| *                       Use iterative refinement to improve the
 | |
| *                       solution.
 | |
| *
 | |
|                         SRNAMT = 'DGERFS'
 | |
|                         CALL DGERFS( TRANS, N, NRHS, A, LDA, AFAC, LDA,
 | |
|      $                               IWORK, B, LDA, X, LDA, RWORK,
 | |
|      $                               RWORK( NRHS+1 ), WORK,
 | |
|      $                               IWORK( N+1 ), INFO )
 | |
| *
 | |
| *                       Check error code from DGERFS.
 | |
| *
 | |
|                         IF( INFO.NE.0 )
 | |
|      $                     CALL ALAERH( PATH, 'DGERFS', INFO, 0, TRANS,
 | |
|      $                                  N, N, -1, -1, NRHS, IMAT, NFAIL,
 | |
|      $                                  NERRS, NOUT )
 | |
| *
 | |
|                         CALL DGET04( N, NRHS, X, LDA, XACT, LDA, RCONDC,
 | |
|      $                               RESULT( 5 ) )
 | |
|                         CALL DGET07( TRANS, N, NRHS, A, LDA, B, LDA, X,
 | |
|      $                               LDA, XACT, LDA, RWORK, .TRUE.,
 | |
|      $                               RWORK( NRHS+1 ), RESULT( 6 ) )
 | |
| *
 | |
| *                       Print information about the tests that did not
 | |
| *                       pass the threshold.
 | |
| *
 | |
|                         DO 40 K = 3, 7
 | |
|                            IF( RESULT( K ).GE.THRESH ) THEN
 | |
|                               IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
 | |
|      $                           CALL ALAHD( NOUT, PATH )
 | |
|                               WRITE( NOUT, FMT = 9998 )TRANS, N, NRHS,
 | |
|      $                           IMAT, K, RESULT( K )
 | |
|                               NFAIL = NFAIL + 1
 | |
|                            END IF
 | |
|    40                   CONTINUE
 | |
|                         NRUN = NRUN + 5
 | |
|    50                CONTINUE
 | |
|    60             CONTINUE
 | |
| *
 | |
| *+    TEST 8
 | |
| *                    Get an estimate of RCOND = 1/CNDNUM.
 | |
| *
 | |
|    70             CONTINUE
 | |
|                   DO 80 ITRAN = 1, 2
 | |
|                      IF( ITRAN.EQ.1 ) THEN
 | |
|                         ANORM = ANORMO
 | |
|                         RCONDC = RCONDO
 | |
|                         NORM = 'O'
 | |
|                      ELSE
 | |
|                         ANORM = ANORMI
 | |
|                         RCONDC = RCONDI
 | |
|                         NORM = 'I'
 | |
|                      END IF
 | |
|                      SRNAMT = 'DGECON'
 | |
|                      CALL DGECON( NORM, N, AFAC, LDA, ANORM, RCOND,
 | |
|      $                            WORK, IWORK( N+1 ), INFO )
 | |
| *
 | |
| *                       Check error code from DGECON.
 | |
| *
 | |
|                      IF( INFO.NE.0 )
 | |
|      $                  CALL ALAERH( PATH, 'DGECON', INFO, 0, NORM, N,
 | |
|      $                               N, -1, -1, -1, IMAT, NFAIL, NERRS,
 | |
|      $                               NOUT )
 | |
| *
 | |
| *                       This line is needed on a Sun SPARCstation.
 | |
| *
 | |
|                      DUMMY = RCOND
 | |
| *
 | |
|                      RESULT( 8 ) = DGET06( RCOND, RCONDC )
 | |
| *
 | |
| *                    Print information about the tests that did not pass
 | |
| *                    the threshold.
 | |
| *
 | |
|                      IF( RESULT( 8 ).GE.THRESH ) THEN
 | |
|                         IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
 | |
|      $                     CALL ALAHD( NOUT, PATH )
 | |
|                         WRITE( NOUT, FMT = 9997 )NORM, N, IMAT, 8,
 | |
|      $                     RESULT( 8 )
 | |
|                         NFAIL = NFAIL + 1
 | |
|                      END IF
 | |
|                      NRUN = NRUN + 1
 | |
|    80             CONTINUE
 | |
|    90          CONTINUE
 | |
|   100       CONTINUE
 | |
|   110    CONTINUE
 | |
|   120 CONTINUE
 | |
| *
 | |
| *     Print a summary of the results.
 | |
| *
 | |
|       CALL ALASUM( PATH, NOUT, NFAIL, NRUN, NERRS )
 | |
| *
 | |
|  9999 FORMAT( ' M = ', I5, ', N =', I5, ', NB =', I4, ', type ', I2,
 | |
|      $      ', test(', I2, ') =', G12.5 )
 | |
|  9998 FORMAT( ' TRANS=''', A1, ''', N =', I5, ', NRHS=', I3, ', type ',
 | |
|      $      I2, ', test(', I2, ') =', G12.5 )
 | |
|  9997 FORMAT( ' NORM =''', A1, ''', N =', I5, ',', 10X, ' type ', I2,
 | |
|      $      ', test(', I2, ') =', G12.5 )
 | |
|       RETURN
 | |
| *
 | |
| *     End of DCHKGE
 | |
| *
 | |
|       END
 |