dchktp.f

来自「famous linear algebra library (LAPACK) p」· F 代码 · 共 461 行 · 第 1/2 页

                  XTYPE = 'N'
*
                  DO 30 ITRAN = 1, NTRAN
*
*                 Do for op(A) = A, A**T, or A**H.
*
                     TRANS = TRANSS( ITRAN )
                     IF( ITRAN.EQ.1 ) THEN
                        NORM = 'O'
                        RCONDC = RCONDO
                     ELSE
                        NORM = 'I'
                        RCONDC = RCONDI
                     END IF
*
*+    TEST 2
*                 Solve and compute residual for op(A)*x = b.
*
                     SRNAMT = 'DLARHS'
                     CALL DLARHS( PATH, XTYPE, UPLO, TRANS, N, N, 0,
     $                            IDIAG, NRHS, AP, LAP, XACT, LDA, B,
     $                            LDA, ISEED, INFO )
                     XTYPE = 'C'
                     CALL DLACPY( 'Full', N, NRHS, B, LDA, X, LDA )
*
                     SRNAMT = 'DTPTRS'
                     CALL DTPTRS( UPLO, TRANS, DIAG, N, NRHS, AP, X,
     $                            LDA, INFO )
*
*                 Check error code from DTPTRS.
*
                     IF( INFO.NE.0 )
     $                  CALL ALAERH( PATH, 'DTPTRS', INFO, 0,
     $                               UPLO // TRANS // DIAG, N, N, -1,
     $                               -1, -1, IMAT, NFAIL, NERRS, NOUT )
*
                     CALL DTPT02( UPLO, TRANS, DIAG, N, NRHS, AP, X,
     $                            LDA, B, LDA, WORK, RESULT( 2 ) )
*
*+    TEST 3
*                 Check solution from generated exact solution.
*
                     CALL DGET04( N, NRHS, X, LDA, XACT, LDA, RCONDC,
     $                            RESULT( 3 ) )
*
*+    TESTS 4, 5, and 6
*                 Use iterative refinement to improve the solution and
*                 compute error bounds.
*
                     SRNAMT = 'DTPRFS'
                     CALL DTPRFS( UPLO, TRANS, DIAG, N, NRHS, AP, B,
     $                            LDA, X, LDA, RWORK, RWORK( NRHS+1 ),
     $                            WORK, IWORK, INFO )
*
*                 Check error code from DTPRFS.
*
                     IF( INFO.NE.0 )
     $                  CALL ALAERH( PATH, 'DTPRFS', INFO, 0,
     $                               UPLO // TRANS // DIAG, N, N, -1,
     $                               -1, NRHS, IMAT, NFAIL, NERRS,
     $                               NOUT )
*
                     CALL DGET04( N, NRHS, X, LDA, XACT, LDA, RCONDC,
     $                            RESULT( 4 ) )
                     CALL DTPT05( UPLO, TRANS, DIAG, N, NRHS, AP, B,
     $                            LDA, X, LDA, XACT, LDA, RWORK,
     $                            RWORK( NRHS+1 ), RESULT( 5 ) )
*
*                    Print information about the tests that did not pass
*                    the threshold.
*
                     DO 20 K = 2, 6
                        IF( RESULT( K ).GE.THRESH ) THEN
                           IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
     $                        CALL ALAHD( NOUT, PATH )
                           WRITE( NOUT, FMT = 9998 )UPLO, TRANS, DIAG,
     $                        N, NRHS, IMAT, K, RESULT( K )
                           NFAIL = NFAIL + 1
                        END IF
   20                CONTINUE
                     NRUN = NRUN + 5
   30             CONTINUE
   40          CONTINUE
*
*+    TEST 7
*                 Get an estimate of RCOND = 1/CNDNUM.
*
               DO 50 ITRAN = 1, 2
                  IF( ITRAN.EQ.1 ) THEN
                     NORM = 'O'
                     RCONDC = RCONDO
                  ELSE
                     NORM = 'I'
                     RCONDC = RCONDI
                  END IF
*
                  SRNAMT = 'DTPCON'
                  CALL DTPCON( NORM, UPLO, DIAG, N, AP, RCOND, WORK,
     $                         IWORK, INFO )
*
*                 Check error code from DTPCON.
*
                  IF( INFO.NE.0 )
     $               CALL ALAERH( PATH, 'DTPCON', INFO, 0,
     $                            NORM // UPLO // DIAG, N, N, -1, -1,
     $                            -1, IMAT, NFAIL, NERRS, NOUT )
*
                  CALL DTPT06( RCOND, RCONDC, UPLO, DIAG, N, AP, RWORK,
     $                         RESULT( 7 ) )
*
*                 Print the test ratio if it is .GE. THRESH.
*
                  IF( RESULT( 7 ).GE.THRESH ) THEN
                     IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
     $                  CALL ALAHD( NOUT, PATH )
                     WRITE( NOUT, FMT = 9997 ) 'DTPCON', NORM, UPLO,
     $                  DIAG, N, IMAT, 7, RESULT( 7 )
                     NFAIL = NFAIL + 1
                  END IF
                  NRUN = NRUN + 1
   50          CONTINUE
   60       CONTINUE
   70    CONTINUE
*
*        Use pathological test matrices to test DLATPS.
*
         DO 100 IMAT = NTYPE1 + 1, NTYPES
*
*           Do the tests only if DOTYPE( IMAT ) is true.
*
            IF( .NOT.DOTYPE( IMAT ) )
     $         GO TO 100
*
            DO 90 IUPLO = 1, 2
*
*              Do first for UPLO = 'U', then for UPLO = 'L'
*
               UPLO = UPLOS( IUPLO )
               DO 80 ITRAN = 1, NTRAN
*
*                 Do for op(A) = A, A**T, or A**H.
*
                  TRANS = TRANSS( ITRAN )
*
*                 Call DLATTP to generate a triangular test matrix.
*
                  SRNAMT = 'DLATTP'
                  CALL DLATTP( IMAT, UPLO, TRANS, DIAG, ISEED, N, AP, X,
     $                         WORK, INFO )
*
*+    TEST 8
*                 Solve the system op(A)*x = b.
*
                  SRNAMT = 'DLATPS'
                  CALL DCOPY( N, X, 1, B, 1 )
                  CALL DLATPS( UPLO, TRANS, DIAG, 'N', N, AP, B, SCALE,
     $                         RWORK, INFO )
*
*                 Check error code from DLATPS.
*
                  IF( INFO.NE.0 )
     $               CALL ALAERH( PATH, 'DLATPS', INFO, 0,
     $                            UPLO // TRANS // DIAG // 'N', N, N,
     $                            -1, -1, -1, IMAT, NFAIL, NERRS, NOUT )
*
                  CALL DTPT03( UPLO, TRANS, DIAG, N, 1, AP, SCALE,
     $                         RWORK, ONE, B, LDA, X, LDA, WORK,
     $                         RESULT( 8 ) )
*
*+    TEST 9
*                 Solve op(A)*x = b again with NORMIN = 'Y'.
*
                  CALL DCOPY( N, X, 1, B( N+1 ), 1 )
                  CALL DLATPS( UPLO, TRANS, DIAG, 'Y', N, AP, B( N+1 ),
     $                         SCALE, RWORK, INFO )
*
*                 Check error code from DLATPS.
*
                  IF( INFO.NE.0 )
     $               CALL ALAERH( PATH, 'DLATPS', INFO, 0,
     $                            UPLO // TRANS // DIAG // 'Y', N, N,
     $                            -1, -1, -1, IMAT, NFAIL, NERRS, NOUT )
*
                  CALL DTPT03( UPLO, TRANS, DIAG, N, 1, AP, SCALE,
     $                         RWORK, ONE, B( N+1 ), LDA, X, LDA, WORK,
     $                         RESULT( 9 ) )
*
*                 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 = 9996 )'DLATPS', UPLO, TRANS,
     $                  DIAG, 'N', N, IMAT, 8, RESULT( 8 )
                     NFAIL = NFAIL + 1
                  END IF
                  IF( RESULT( 9 ).GE.THRESH ) THEN
                     IF( NFAIL.EQ.0 .AND. NERRS.EQ.0 )
     $                  CALL ALAHD( NOUT, PATH )
                     WRITE( NOUT, FMT = 9996 )'DLATPS', UPLO, TRANS,
     $                  DIAG, 'Y', N, IMAT, 9, RESULT( 9 )
                     NFAIL = NFAIL + 1
                  END IF
                  NRUN = NRUN + 2
   80          CONTINUE
   90       CONTINUE
  100    CONTINUE
  110 CONTINUE
*
*     Print a summary of the results.
*
      CALL ALASUM( PATH, NOUT, NFAIL, NRUN, NERRS )
*
 9999 FORMAT( ' UPLO=''', A1, ''', DIAG=''', A1, ''', N=', I5,
     $      ', type ', I2, ', test(', I2, ')= ', G12.5 )
 9998 FORMAT( ' UPLO=''', A1, ''', TRANS=''', A1, ''', DIAG=''', A1,
     $      ''', N=', I5, ''', NRHS=', I5, ', type ', I2, ', test(',
     $      I2, ')= ', G12.5 )
 9997 FORMAT( 1X, A6, '( ''', A1, ''', ''', A1, ''', ''', A1, ''',',
     $      I5, ', ... ), type ', I2, ', test(', I2, ')=', G12.5 )
 9996 FORMAT( 1X, A6, '( ''', A1, ''', ''', A1, ''', ''', A1, ''', ''',
     $      A1, ''',', I5, ', ... ), type ', I2, ', test(', I2, ')=',
     $      G12.5 )
      RETURN
*
*     End of DCHKTP
*
      END