dblat2.f

来自「基于Blas CLapck的.用过的人知道是干啥的」· F 代码 · 共 1,741 行 · 第 1/5 页

*
  240 CONTINUE
      IF( TRACE )
     $   CLOSE ( NTRA )
      IF (NOUT.NE.6) CLOSE ( NOUT )
      STOP
*
 9999 FORMAT( ' ROUTINES PASS COMPUTATIONAL TESTS IF TEST RATIO IS LES',
     $      'S THAN', F8.2 )
 9998 FORMAT( ' RELATIVE MACHINE PRECISION IS TAKEN TO BE', 1P, D9.1 )
 9997 FORMAT( ' NUMBER OF VALUES OF ', A, ' IS LESS THAN 1 OR GREATER ',
     $      'THAN ', I2 )
 9996 FORMAT( ' VALUE OF N IS LESS THAN 0 OR GREATER THAN ', I2 )
 9995 FORMAT( ' VALUE OF K IS LESS THAN 0' )
 9994 FORMAT( ' ABSOLUTE VALUE OF INCX OR INCY IS 0 OR GREATER THAN ',
     $      I2 )
 9993 FORMAT( ' TESTS OF THE DOUBLE PRECISION LEVEL 2 BLAS', //' THE F',
     $      'OLLOWING PARAMETER VALUES WILL BE USED:' )
 9992 FORMAT( '   FOR N              ', 9I6 )
 9991 FORMAT( '   FOR K              ', 7I6 )
 9990 FORMAT( '   FOR INCX AND INCY  ', 7I6 )
 9989 FORMAT( '   FOR ALPHA          ', 7F6.1 )
 9988 FORMAT( '   FOR BETA           ', 7F6.1 )
 9987 FORMAT( ' AMEND DATA FILE OR INCREASE ARRAY SIZES IN PROGRAM',
     $      /' ******* TESTS ABANDONED *******' )
 9986 FORMAT( ' SUBPROGRAM NAME ', A6, ' NOT RECOGNIZED', /' ******* T',
     $      'ESTS ABANDONED *******' )
 9985 FORMAT( ' ERROR IN DMVCH -  IN-LINE DOT PRODUCTS ARE BEING EVALU',
     $      'ATED WRONGLY.', /' DMVCH WAS CALLED WITH TRANS = ', A1,
     $      ' AND RETURNED SAME = ', L1, ' AND ERR = ', F12.3, '.', /
     $   ' THIS MAY BE DUE TO FAULTS IN THE ARITHMETIC OR THE COMPILER.'
     $      , /' ******* TESTS ABANDONED *******' )
 9984 FORMAT( A6, L2 )
 9983 FORMAT( 1X, A6, ' WAS NOT TESTED' )
 9982 FORMAT( /' END OF TESTS' )
 9981 FORMAT( /' ******* FATAL ERROR - TESTS ABANDONED *******' )
 9980 FORMAT( ' ERROR-EXITS WILL NOT BE TESTED' )
*
*     End of DBLAT2.
*
      END
      SUBROUTINE DCHK1( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,
     $                  FATAL, NIDIM, IDIM, NKB, KB, NALF, ALF, NBET,
     $                  BET, NINC, INC, NMAX, INCMAX, A, AA, AS, X, XX,
     $                  XS, Y, YY, YS, YT, G )
*
*  Tests DGEMV and DGBMV.
*
*  Auxiliary routine for test program for Level 2 Blas.
*
*  -- Written on 10-August-1987.
*     Richard Hanson, Sandia National Labs.
*     Jeremy Du Croz, NAG Central Office.
*
*     .. Parameters ..
      DOUBLE PRECISION   ZERO, HALF
      PARAMETER          ( ZERO = 0.0D0, HALF = 0.5D0 )
*     .. Scalar Arguments ..
      DOUBLE PRECISION   EPS, THRESH
      INTEGER            INCMAX, NALF, NBET, NIDIM, NINC, NKB, NMAX,
     $                   NOUT, NTRA
      LOGICAL            FATAL, REWI, TRACE
      CHARACTER*6        SNAME
*     .. Array Arguments ..
      DOUBLE PRECISION   A( NMAX, NMAX ), AA( NMAX*NMAX ), ALF( NALF ),
     $                   AS( NMAX*NMAX ), BET( NBET ), G( NMAX ),
     $                   X( NMAX ), XS( NMAX*INCMAX ),
     $                   XX( NMAX*INCMAX ), Y( NMAX ),
     $                   YS( NMAX*INCMAX ), YT( NMAX ),
     $                   YY( NMAX*INCMAX )
      INTEGER            IDIM( NIDIM ), INC( NINC ), KB( NKB )
*     .. Local Scalars ..
      DOUBLE PRECISION   ALPHA, ALS, BETA, BLS, ERR, ERRMAX, TRANSL
      INTEGER            I, IA, IB, IC, IKU, IM, IN, INCX, INCXS, INCY,
     $                   INCYS, IX, IY, KL, KLS, KU, KUS, LAA, LDA,
     $                   LDAS, LX, LY, M, ML, MS, N, NARGS, NC, ND, NK,
     $                   NL, NS
      LOGICAL            BANDED, FULL, NULL, RESET, SAME, TRAN
      CHARACTER*1        TRANS, TRANSS
      CHARACTER*3        ICH
*     .. Local Arrays ..
      LOGICAL            ISAME( 13 )
*     .. External Functions ..
      LOGICAL            LDE, LDERES
      EXTERNAL           LDE, LDERES
*     .. External Subroutines ..
      EXTERNAL           DGBMV, DGEMV, DMAKE, DMVCH
*     .. Intrinsic Functions ..
      INTRINSIC          ABS, MAX, MIN
*     .. Scalars in Common ..
      INTEGER            INFOT, NOUTC
      LOGICAL            LERR, OK
*     .. Common blocks ..
      COMMON             /INFOC/INFOT, NOUTC, OK, LERR
*     .. Data statements ..
      DATA               ICH/'NTC'/
*     .. Executable Statements ..
      FULL = SNAME( 3: 3 ).EQ.'E'
      BANDED = SNAME( 3: 3 ).EQ.'B'
*     Define the number of arguments.
      IF( FULL )THEN
         NARGS = 11
      ELSE IF( BANDED )THEN
         NARGS = 13
      END IF
*
      NC = 0
      RESET = .TRUE.
      ERRMAX = ZERO
*
      DO 120 IN = 1, NIDIM
         N = IDIM( IN )
         ND = N/2 + 1
*
         DO 110 IM = 1, 2
            IF( IM.EQ.1 )
     $         M = MAX( N - ND, 0 )
            IF( IM.EQ.2 )
     $         M = MIN( N + ND, NMAX )
*
            IF( BANDED )THEN
               NK = NKB
            ELSE
               NK = 1
            END IF
            DO 100 IKU = 1, NK
               IF( BANDED )THEN
                  KU = KB( IKU )
                  KL = MAX( KU - 1, 0 )
               ELSE
                  KU = N - 1
                  KL = M - 1
               END IF
*              Set LDA to 1 more than minimum value if room.
               IF( BANDED )THEN
                  LDA = KL + KU + 1
               ELSE
                  LDA = M
               END IF
               IF( LDA.LT.NMAX )
     $            LDA = LDA + 1
*              Skip tests if not enough room.
               IF( LDA.GT.NMAX )
     $            GO TO 100
               LAA = LDA*N
               NULL = N.LE.0.OR.M.LE.0
*
*              Generate the matrix A.
*
               TRANSL = ZERO
               CALL DMAKE( SNAME( 2: 3 ), ' ', ' ', M, N, A, NMAX, AA,
     $                     LDA, KL, KU, RESET, TRANSL )
*
               DO 90 IC = 1, 3
                  TRANS = ICH( IC: IC )
                  TRAN = TRANS.EQ.'T'.OR.TRANS.EQ.'C'
*
                  IF( TRAN )THEN
                     ML = N
                     NL = M
                  ELSE
                     ML = M
                     NL = N
                  END IF
*
                  DO 80 IX = 1, NINC
                     INCX = INC( IX )
                     LX = ABS( INCX )*NL
*
*                    Generate the vector X.
*
                     TRANSL = HALF
                     CALL DMAKE( 'GE', ' ', ' ', 1, NL, X, 1, XX,
     $                           ABS( INCX ), 0, NL - 1, RESET, TRANSL )
                     IF( NL.GT.1 )THEN
                        X( NL/2 ) = ZERO
                        XX( 1 + ABS( INCX )*( NL/2 - 1 ) ) = ZERO
                     END IF
*
                     DO 70 IY = 1, NINC
                        INCY = INC( IY )
                        LY = ABS( INCY )*ML
*
                        DO 60 IA = 1, NALF
                           ALPHA = ALF( IA )
*
                           DO 50 IB = 1, NBET
                              BETA = BET( IB )
*
*                             Generate the vector Y.
*
                              TRANSL = ZERO
                              CALL DMAKE( 'GE', ' ', ' ', 1, ML, Y, 1,
     $                                    YY, ABS( INCY ), 0, ML - 1,
     $                                    RESET, TRANSL )
*
                              NC = NC + 1
*
*                             Save every datum before calling the
*                             subroutine.
*
                              TRANSS = TRANS
                              MS = M
                              NS = N
                              KLS = KL
                              KUS = KU
                              ALS = ALPHA
                              DO 10 I = 1, LAA
                                 AS( I ) = AA( I )
   10                         CONTINUE
                              LDAS = LDA
                              DO 20 I = 1, LX
                                 XS( I ) = XX( I )
   20                         CONTINUE
                              INCXS = INCX
                              BLS = BETA
                              DO 30 I = 1, LY
                                 YS( I ) = YY( I )
   30                         CONTINUE
                              INCYS = INCY
*
*                             Call the subroutine.
*
                              IF( FULL )THEN
                                 IF( TRACE )
     $                              WRITE( NTRA, FMT = 9994 )NC, SNAME,
     $                              TRANS, M, N, ALPHA, LDA, INCX, BETA,
     $                              INCY
                                 IF( REWI )
     $                              REWIND NTRA
                                 CALL DGEMV( TRANS, M, N, ALPHA, AA,
     $                                       LDA, XX, INCX, BETA, YY,
     $                                       INCY )
                              ELSE IF( BANDED )THEN
                                 IF( TRACE )
     $                              WRITE( NTRA, FMT = 9995 )NC, SNAME,
     $                              TRANS, M, N, KL, KU, ALPHA, LDA,
     $                              INCX, BETA, INCY
                                 IF( REWI )
     $                              REWIND NTRA
                                 CALL DGBMV( TRANS, M, N, KL, KU, ALPHA,
     $                                       AA, LDA, XX, INCX, BETA,
     $                                       YY, INCY )
                              END IF
*
*                             Check if error-exit was taken incorrectly.
*
                              IF( .NOT.OK )THEN
                                 WRITE( NOUT, FMT = 9993 )
                                 FATAL = .TRUE.
                                 GO TO 130
                              END IF
*
*                             See what data changed inside subroutines.
*
                              ISAME( 1 ) = TRANS.EQ.TRANSS
                              ISAME( 2 ) = MS.EQ.M
                              ISAME( 3 ) = NS.EQ.N
                              IF( FULL )THEN
                                 ISAME( 4 ) = ALS.EQ.ALPHA
                                 ISAME( 5 ) = LDE( AS, AA, LAA )
                                 ISAME( 6 ) = LDAS.EQ.LDA
                                 ISAME( 7 ) = LDE( XS, XX, LX )
                                 ISAME( 8 ) = INCXS.EQ.INCX
                                 ISAME( 9 ) = BLS.EQ.BETA
                                 IF( NULL )THEN
                                    ISAME( 10 ) = LDE( YS, YY, LY )
                                 ELSE
                                    ISAME( 10 ) = LDERES( 'GE', ' ', 1,
     $                                            ML, YS, YY,
     $                                            ABS( INCY ) )
                                 END IF
                                 ISAME( 11 ) = INCYS.EQ.INCY
                              ELSE IF( BANDED )THEN
                                 ISAME( 4 ) = KLS.EQ.KL
                                 ISAME( 5 ) = KUS.EQ.KU
                                 ISAME( 6 ) = ALS.EQ.ALPHA
                                 ISAME( 7 ) = LDE( AS, AA, LAA )
                                 ISAME( 8 ) = LDAS.EQ.LDA
                                 ISAME( 9 ) = LDE( XS, XX, LX )
                                 ISAME( 10 ) = INCXS.EQ.INCX
                                 ISAME( 11 ) = BLS.EQ.BETA
                                 IF( NULL )THEN
                                    ISAME( 12 ) = LDE( YS, YY, LY )
                                 ELSE
                                    ISAME( 12 ) = LDERES( 'GE', ' ', 1,
     $                                            ML, YS, YY,
     $                                            ABS( INCY ) )
                                 END IF
                                 ISAME( 13 ) = INCYS.EQ.INCY
                              END IF
*
*                             If data was incorrectly changed, report
*                             and return.
*
                              SAME = .TRUE.
                              DO 40 I = 1, NARGS
                                 SAME = SAME.AND.ISAME( I )
                                 IF( .NOT.ISAME( I ) )
     $                              WRITE( NOUT, FMT = 9998 )I
   40                         CONTINUE
                              IF( .NOT.SAME )THEN
                                 FATAL = .TRUE.
                                 GO TO 130
                              END IF
*
                              IF( .NOT.NULL )THEN
*
*                                Check the result.
*
                                 CALL DMVCH( TRANS, M, N, ALPHA, A,
     $                                       NMAX, X, INCX, BETA, Y,
     $                                       INCY, YT, G, YY, EPS, ERR,
     $                                       FATAL, NOUT, .TRUE. )
                                 ERRMAX = MAX( ERRMAX, ERR )
*                                If got really bad answer, report and
*                                return.
                                 IF( FATAL )
     $                              GO TO 130
                              ELSE
*                                Avoid repeating tests with M.le.0 or
*                                N.le.0.
                                 GO TO 110
                              END IF
*
   50                      CONTINUE
*
   60                   CONTINUE
*
   70                CONTINUE
*
   80             CONTINUE
*
   90          CONTINUE
*
  100       CONTINUE
*
  110    CONTINUE
*
  120 CONTINUE
*
*     Report result.
*
      IF( ERRMAX.LT.THRESH )THEN
         WRITE( NOUT, FMT = 9999 )SNAME, NC
      ELSE
         WRITE( NOUT, FMT = 9997 )SNAME, NC, ERRMAX
      END IF
      GO TO 140