365 lines
10 KiB
Fortran
365 lines
10 KiB
Fortran
*> \brief \b DCHKAB
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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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* PROGRAM DCHKAB
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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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*> DCHKAB is the test program for the DOUBLE PRECISION LAPACK
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*> DSGESV/DSPOSV routine
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*>
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*> The program must be driven by a short data file. The first 5 records
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*> specify problem dimensions and program options using list-directed
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*> input. The remaining lines specify the LAPACK test paths and the
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*> number of matrix types to use in testing. An annotated example of a
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*> data file can be obtained by deleting the first 3 characters from the
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*> following 10 lines:
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*> Data file for testing DOUBLE PRECISION LAPACK DSGESV
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*> 7 Number of values of M
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*> 0 1 2 3 5 10 16 Values of M (row dimension)
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*> 1 Number of values of NRHS
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*> 2 Values of NRHS (number of right hand sides)
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*> 20.0 Threshold value of test ratio
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*> T Put T to test the LAPACK routines
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*> T Put T to test the error exits
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*> DGE 11 List types on next line if 0 < NTYPES < 11
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*> DPO 9 List types on next line if 0 < NTYPES < 9
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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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*> \verbatim
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*> NMAX INTEGER
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*> The maximum allowable value for N
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*>
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*> MAXIN INTEGER
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*> The number of different values that can be used for each of
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*> M, N, NRHS, NB, and NX
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*>
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*> MAXRHS INTEGER
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*> The maximum number of right hand sides
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*>
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*> NIN INTEGER
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*> The unit number for input
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*>
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*> NOUT 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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PROGRAM DCHKAB
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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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* =====================================================================
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*
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* .. Parameters ..
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INTEGER NMAX
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PARAMETER ( NMAX = 132 )
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INTEGER MAXIN
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PARAMETER ( MAXIN = 12 )
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INTEGER MAXRHS
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PARAMETER ( MAXRHS = 16 )
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INTEGER MATMAX
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PARAMETER ( MATMAX = 30 )
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INTEGER NIN, NOUT
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PARAMETER ( NIN = 5, NOUT = 6 )
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INTEGER LDAMAX
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PARAMETER ( LDAMAX = NMAX )
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* ..
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* .. Local Scalars ..
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LOGICAL FATAL, TSTDRV, TSTERR
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CHARACTER C1
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CHARACTER*2 C2
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CHARACTER*3 PATH
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CHARACTER*10 INTSTR
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CHARACTER*72 ALINE
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INTEGER I, IC, K, LDA, NM, NMATS,
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$ NNS, NRHS, NTYPES,
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$ VERS_MAJOR, VERS_MINOR, VERS_PATCH
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DOUBLE PRECISION EPS, S1, S2, THRESH
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REAL SEPS
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* ..
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* .. Local Arrays ..
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LOGICAL DOTYPE( MATMAX )
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INTEGER IWORK( NMAX ), MVAL( MAXIN ), NSVAL( MAXIN )
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DOUBLE PRECISION A( LDAMAX*NMAX, 2 ), B( NMAX*MAXRHS, 2 ),
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$ RWORK( NMAX ), WORK( NMAX*MAXRHS*2 )
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REAL SWORK(NMAX*(NMAX+MAXRHS))
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* ..
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* .. External Functions ..
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DOUBLE PRECISION DLAMCH, DSECND
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LOGICAL LSAME, LSAMEN
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REAL SLAMCH
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EXTERNAL LSAME, LSAMEN, DLAMCH, DSECND, SLAMCH
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* ..
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* .. External Subroutines ..
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EXTERNAL ALAREQ, DDRVAB, DDRVAC, DERRAB, DERRAC,
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$ ILAVER
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* ..
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* .. Scalars in Common ..
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LOGICAL LERR, OK
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CHARACTER*32 SRNAMT
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INTEGER INFOT, NUNIT
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* ..
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* .. Common blocks ..
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COMMON / INFOC / INFOT, NUNIT, OK, LERR
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Data statements ..
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DATA INTSTR / '0123456789' /
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* ..
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* .. Executable Statements ..
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*
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S1 = DSECND( )
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LDA = NMAX
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FATAL = .FALSE.
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*
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* Read a dummy line.
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*
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READ( NIN, FMT = * )
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*
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* Report values of parameters.
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*
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CALL ILAVER( VERS_MAJOR, VERS_MINOR, VERS_PATCH )
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WRITE( NOUT, FMT = 9994 ) VERS_MAJOR, VERS_MINOR, VERS_PATCH
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*
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* Read the values of M
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*
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READ( NIN, FMT = * )NM
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IF( NM.LT.1 ) THEN
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WRITE( NOUT, FMT = 9996 )' NM ', NM, 1
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NM = 0
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FATAL = .TRUE.
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ELSE IF( NM.GT.MAXIN ) THEN
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WRITE( NOUT, FMT = 9995 )' NM ', NM, MAXIN
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NM = 0
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FATAL = .TRUE.
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END IF
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READ( NIN, FMT = * )( MVAL( I ), I = 1, NM )
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DO 10 I = 1, NM
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IF( MVAL( I ).LT.0 ) THEN
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WRITE( NOUT, FMT = 9996 )' M ', MVAL( I ), 0
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FATAL = .TRUE.
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ELSE IF( MVAL( I ).GT.NMAX ) THEN
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WRITE( NOUT, FMT = 9995 )' M ', MVAL( I ), NMAX
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FATAL = .TRUE.
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END IF
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10 CONTINUE
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IF( NM.GT.0 )
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$ WRITE( NOUT, FMT = 9993 )'M ', ( MVAL( I ), I = 1, NM )
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*
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* Read the values of NRHS
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*
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READ( NIN, FMT = * )NNS
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IF( NNS.LT.1 ) THEN
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WRITE( NOUT, FMT = 9996 )' NNS', NNS, 1
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NNS = 0
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FATAL = .TRUE.
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ELSE IF( NNS.GT.MAXIN ) THEN
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WRITE( NOUT, FMT = 9995 )' NNS', NNS, MAXIN
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NNS = 0
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FATAL = .TRUE.
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END IF
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READ( NIN, FMT = * )( NSVAL( I ), I = 1, NNS )
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DO 30 I = 1, NNS
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IF( NSVAL( I ).LT.0 ) THEN
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WRITE( NOUT, FMT = 9996 )'NRHS', NSVAL( I ), 0
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FATAL = .TRUE.
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ELSE IF( NSVAL( I ).GT.MAXRHS ) THEN
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WRITE( NOUT, FMT = 9995 )'NRHS', NSVAL( I ), MAXRHS
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FATAL = .TRUE.
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END IF
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30 CONTINUE
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IF( NNS.GT.0 )
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$ WRITE( NOUT, FMT = 9993 )'NRHS', ( NSVAL( I ), I = 1, NNS )
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*
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* Read the threshold value for the test ratios.
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*
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READ( NIN, FMT = * )THRESH
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WRITE( NOUT, FMT = 9992 )THRESH
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*
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* Read the flag that indicates whether to test the driver routine.
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*
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READ( NIN, FMT = * )TSTDRV
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*
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* Read the flag that indicates whether to test the error exits.
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*
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READ( NIN, FMT = * )TSTERR
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*
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IF( FATAL ) THEN
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WRITE( NOUT, FMT = 9999 )
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STOP
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END IF
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*
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* Calculate and print the machine dependent constants.
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*
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SEPS = SLAMCH( 'Underflow threshold' )
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WRITE( NOUT, FMT = 9991 )'(single precision) underflow', SEPS
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SEPS = SLAMCH( 'Overflow threshold' )
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WRITE( NOUT, FMT = 9991 )'(single precision) overflow ', SEPS
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SEPS = SLAMCH( 'Epsilon' )
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WRITE( NOUT, FMT = 9991 )'(single precision) precision', SEPS
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WRITE( NOUT, FMT = * )
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*
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EPS = DLAMCH( 'Underflow threshold' )
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WRITE( NOUT, FMT = 9991 )'(double precision) underflow', EPS
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EPS = DLAMCH( 'Overflow threshold' )
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WRITE( NOUT, FMT = 9991 )'(double precision) overflow ', EPS
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EPS = DLAMCH( 'Epsilon' )
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WRITE( NOUT, FMT = 9991 )'(double precision) precision', EPS
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WRITE( NOUT, FMT = * )
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*
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80 CONTINUE
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*
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* Read a test path and the number of matrix types to use.
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*
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READ( NIN, FMT = '(A72)', END = 140 )ALINE
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PATH = ALINE( 1: 3 )
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NMATS = MATMAX
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I = 3
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90 CONTINUE
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I = I + 1
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IF( I.GT.72 ) THEN
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NMATS = MATMAX
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GO TO 130
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END IF
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IF( ALINE( I: I ).EQ.' ' )
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$ GO TO 90
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NMATS = 0
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100 CONTINUE
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C1 = ALINE( I: I )
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DO 110 K = 1, 10
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IF( C1.EQ.INTSTR( K: K ) ) THEN
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IC = K - 1
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GO TO 120
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END IF
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110 CONTINUE
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GO TO 130
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120 CONTINUE
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NMATS = NMATS*10 + IC
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I = I + 1
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IF( I.GT.72 )
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$ GO TO 130
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GO TO 100
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130 CONTINUE
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C1 = PATH( 1: 1 )
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C2 = PATH( 2: 3 )
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NRHS = NSVAL( 1 )
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*
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* Check first character for correct precision.
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*
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IF( .NOT.LSAME( C1, 'Double precision' ) ) THEN
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WRITE( NOUT, FMT = 9990 )PATH
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*
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ELSE IF( NMATS.LE.0 ) THEN
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*
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* Check for a positive number of tests requested.
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*
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WRITE( NOUT, FMT = 9989 )PATH
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GO TO 140
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*
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ELSE IF( LSAMEN( 2, C2, 'GE' ) ) THEN
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*
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* GE: general matrices
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*
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NTYPES = 11
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CALL ALAREQ( 'DGE', NMATS, DOTYPE, NTYPES, NIN, NOUT )
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*
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* Test the error exits
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*
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IF( TSTERR )
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$ CALL DERRAB( NOUT )
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*
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IF( TSTDRV ) THEN
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CALL DDRVAB( DOTYPE, NM, MVAL, NNS,
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$ NSVAL, THRESH, LDA, A( 1, 1 ),
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$ A( 1, 2 ), B( 1, 1 ), B( 1, 2 ),
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$ WORK, RWORK, SWORK, IWORK, NOUT )
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ELSE
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WRITE( NOUT, FMT = 9989 )'DSGESV'
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END IF
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*
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ELSE IF( LSAMEN( 2, C2, 'PO' ) ) THEN
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*
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* PO: positive definite matrices
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*
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NTYPES = 9
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CALL ALAREQ( 'DPO', NMATS, DOTYPE, NTYPES, NIN, NOUT )
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*
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*
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IF( TSTERR )
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$ CALL DERRAC( NOUT )
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*
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*
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IF( TSTDRV ) THEN
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CALL DDRVAC( DOTYPE, NM, MVAL, NNS, NSVAL,
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$ THRESH, LDA, A( 1, 1 ), A( 1, 2 ),
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$ B( 1, 1 ), B( 1, 2 ),
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$ WORK, RWORK, SWORK, NOUT )
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ELSE
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WRITE( NOUT, FMT = 9989 )PATH
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END IF
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ELSE
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*
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END IF
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*
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* Go back to get another input line.
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*
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GO TO 80
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*
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* Branch to this line when the last record is read.
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*
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140 CONTINUE
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CLOSE ( NIN )
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S2 = DSECND( )
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WRITE( NOUT, FMT = 9998 )
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WRITE( NOUT, FMT = 9997 )S2 - S1
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*
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9999 FORMAT( / ' Execution not attempted due to input errors' )
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9998 FORMAT( / ' End of tests' )
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9997 FORMAT( ' Total time used = ', F12.2, ' seconds', / )
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9996 FORMAT( ' Invalid input value: ', A4, '=', I6, '; must be >=',
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$ I6 )
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9995 FORMAT( ' Invalid input value: ', A4, '=', I6, '; must be <=',
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$ I6 )
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9994 FORMAT( ' Tests of the DOUBLE PRECISION LAPACK DSGESV/DSPOSV',
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$ ' routines ',
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$ / ' LAPACK VERSION ', I1, '.', I1, '.', I1,
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$ / / ' The following parameter values will be used:' )
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9993 FORMAT( 4X, A4, ': ', 10I6, / 11X, 10I6 )
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9992 FORMAT( / ' Routines pass computational tests if test ratio is ',
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$ 'less than', F8.2, / )
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9991 FORMAT( ' Relative machine ', A, ' is taken to be', D16.6 )
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9990 FORMAT( / 1X, A6, ' routines were not tested' )
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9989 FORMAT( / 1X, A6, ' driver routines were not tested' )
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*
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* End of DCHKAB
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*
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END
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