dblat1.f

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      PROGRAM DBLAT1
*     Test program for the DOUBLE PRECISION Level 1 BLAS.
*     Based upon the original BLAS test routine together with:
*     F06EAF Example Program Text
*     .. Parameters ..
      INTEGER          NOUT
      PARAMETER        (NOUT=6)
*     .. Scalars in Common ..
      INTEGER          ICASE, INCX, INCY, MODE, N
      LOGICAL          PASS
*     .. Local Scalars ..
      DOUBLE PRECISION SFAC
      INTEGER          IC
*     .. External Subroutines ..
      EXTERNAL         CHECK0, CHECK1, CHECK2, CHECK3, HEADER
*     .. Common blocks ..
      COMMON           /COMBLA/ICASE, N, INCX, INCY, MODE, PASS
*     .. Data statements ..
      DATA             SFAC/9.765625D-4/
*     .. Executable Statements ..
      WRITE (NOUT,99999)
      DO 20 IC = 1, 10
         ICASE = IC
         CALL HEADER
*
*        .. Initialize  PASS,  INCX,  INCY, and MODE for a new case. ..
*        .. the value 9999 for INCX, INCY or MODE will appear in the ..
*        .. detailed  output, if any, for cases  that do not involve ..
*        .. these parameters ..
*
         PASS = .TRUE.
         INCX = 9999
         INCY = 9999
         MODE = 9999
         IF (ICASE.EQ.3) THEN
            CALL CHECK0(SFAC)
         ELSE IF (ICASE.EQ.7 .OR. ICASE.EQ.8 .OR. ICASE.EQ.9 .OR.
     +            ICASE.EQ.10) THEN
            CALL CHECK1(SFAC)
         ELSE IF (ICASE.EQ.1 .OR. ICASE.EQ.2 .OR. ICASE.EQ.5 .OR.
     +            ICASE.EQ.6) THEN
            CALL CHECK2(SFAC)
         ELSE IF (ICASE.EQ.4) THEN
            CALL CHECK3(SFAC)
         END IF
*        -- Print
         IF (PASS) WRITE (NOUT,99998)
   20 CONTINUE
      STOP
*
99999 FORMAT (' Real BLAS Test Program Results',/1X)
99998 FORMAT ('                                    ----- PASS -----')
      END
      SUBROUTINE HEADER
*     .. Parameters ..
      INTEGER          NOUT
      PARAMETER        (NOUT=6)
*     .. Scalars in Common ..
      INTEGER          ICASE, INCX, INCY, MODE, N
      LOGICAL          PASS
*     .. Local Arrays ..
      CHARACTER*6      L(10)
*     .. Common blocks ..
      COMMON           /COMBLA/ICASE, N, INCX, INCY, MODE, PASS
*     .. Data statements ..
      DATA             L(1)/' DDOT '/
      DATA             L(2)/'DAXPY '/
      DATA             L(3)/'DROTG '/
      DATA             L(4)/' DROT '/
      DATA             L(5)/'DCOPY '/
      DATA             L(6)/'DSWAP '/
      DATA             L(7)/'DNRM2 '/
      DATA             L(8)/'DASUM '/
      DATA             L(9)/'DSCAL '/
      DATA             L(10)/'IDAMAX'/
*     .. Executable Statements ..
      WRITE (NOUT,99999) ICASE, L(ICASE)
      RETURN
*
99999 FORMAT (/' Test of subprogram number',I3,12X,A6)
      END
      SUBROUTINE CHECK0(SFAC)
*     .. Parameters ..
      INTEGER           NOUT
      PARAMETER         (NOUT=6)
*     .. Scalar Arguments ..
      DOUBLE PRECISION  SFAC
*     .. Scalars in Common ..
      INTEGER           ICASE, INCX, INCY, MODE, N
      LOGICAL           PASS
*     .. Local Scalars ..
      DOUBLE PRECISION  D12, SA, SB, SC, SS
      INTEGER           K
*     .. Local Arrays ..
      DOUBLE PRECISION  DA1(8), DATRUE(8), DB1(8), DBTRUE(8), DC1(8),
     +                  DS1(8)
*     .. External Subroutines ..
      EXTERNAL          DROTG, STEST1
*     .. Common blocks ..
      COMMON            /COMBLA/ICASE, N, INCX, INCY, MODE, PASS
*     .. Data statements ..
      DATA              DA1/0.3D0, 0.4D0, -0.3D0, -0.4D0, -0.3D0, 0.0D0,
     +                  0.0D0, 1.0D0/
      DATA              DB1/0.4D0, 0.3D0, 0.4D0, 0.3D0, -0.4D0, 0.0D0,
     +                  1.0D0, 0.0D0/
      DATA              DC1/0.6D0, 0.8D0, -0.6D0, 0.8D0, 0.6D0, 1.0D0,
     +                  0.0D0, 1.0D0/
      DATA              DS1/0.8D0, 0.6D0, 0.8D0, -0.6D0, 0.8D0, 0.0D0,
     +                  1.0D0, 0.0D0/
      DATA              DATRUE/0.5D0, 0.5D0, 0.5D0, -0.5D0, -0.5D0,
     +                  0.0D0, 1.0D0, 1.0D0/
      DATA              DBTRUE/0.0D0, 0.6D0, 0.0D0, -0.6D0, 0.0D0,
     +                  0.0D0, 1.0D0, 0.0D0/
      DATA              D12/4096.0D0/
*     .. Executable Statements ..
*
*     Compute true values which cannot be prestored
*     in decimal notation
*
      DBTRUE(1) = 1.0D0/0.6D0
      DBTRUE(3) = -1.0D0/0.6D0
      DBTRUE(5) = 1.0D0/0.6D0
*
      DO 20 K = 1, 8
*        .. Set N=K for identification in output if any ..
         N = K
         IF (ICASE.EQ.3) THEN
*           .. DROTG ..
            IF (K.GT.8) GO TO 40
            SA = DA1(K)
            SB = DB1(K)
            CALL DROTG(SA,SB,SC,SS)
            CALL STEST1(SA,DATRUE(K),DATRUE(K),SFAC)
            CALL STEST1(SB,DBTRUE(K),DBTRUE(K),SFAC)
            CALL STEST1(SC,DC1(K),DC1(K),SFAC)
            CALL STEST1(SS,DS1(K),DS1(K),SFAC)
         ELSE
            WRITE (NOUT,*) ' Shouldn''t be here in CHECK0'
            STOP
         END IF
   20 CONTINUE
   40 RETURN
      END
      SUBROUTINE CHECK1(SFAC)
*     .. Parameters ..
      INTEGER           NOUT
      PARAMETER         (NOUT=6)
*     .. Scalar Arguments ..
      DOUBLE PRECISION  SFAC
*     .. Scalars in Common ..
      INTEGER           ICASE, INCX, INCY, MODE, N
      LOGICAL           PASS
*     .. Local Scalars ..
      INTEGER           I, LEN, NP1
*     .. Local Arrays ..
      DOUBLE PRECISION  DTRUE1(5), DTRUE3(5), DTRUE5(8,5,2), DV(8,5,2),
     +                  SA(10), STEMP(1), STRUE(8), SX(8)
      INTEGER           ITRUE2(5)
*     .. External Functions ..
      DOUBLE PRECISION  DASUM, DNRM2
      INTEGER           IDAMAX
      EXTERNAL          DASUM, DNRM2, IDAMAX
*     .. External Subroutines ..
      EXTERNAL          ITEST1, DSCAL, STEST, STEST1
*     .. Intrinsic Functions ..
      INTRINSIC         MAX
*     .. Common blocks ..
      COMMON            /COMBLA/ICASE, N, INCX, INCY, MODE, PASS
*     .. Data statements ..
      DATA              SA/0.3D0, -1.0D0, 0.0D0, 1.0D0, 0.3D0, 0.3D0,
     +                  0.3D0, 0.3D0, 0.3D0, 0.3D0/
      DATA              DV/0.1D0, 2.0D0, 2.0D0, 2.0D0, 2.0D0, 2.0D0,
     +                  2.0D0, 2.0D0, 0.3D0, 3.0D0, 3.0D0, 3.0D0, 3.0D0,
     +                  3.0D0, 3.0D0, 3.0D0, 0.3D0, -0.4D0, 4.0D0,
     +                  4.0D0, 4.0D0, 4.0D0, 4.0D0, 4.0D0, 0.2D0,
     +                  -0.6D0, 0.3D0, 5.0D0, 5.0D0, 5.0D0, 5.0D0,
     +                  5.0D0, 0.1D0, -0.3D0, 0.5D0, -0.1D0, 6.0D0,
     +                  6.0D0, 6.0D0, 6.0D0, 0.1D0, 8.0D0, 8.0D0, 8.0D0,
     +                  8.0D0, 8.0D0, 8.0D0, 8.0D0, 0.3D0, 9.0D0, 9.0D0,
     +                  9.0D0, 9.0D0, 9.0D0, 9.0D0, 9.0D0, 0.3D0, 2.0D0,
     +                  -0.4D0, 2.0D0, 2.0D0, 2.0D0, 2.0D0, 2.0D0,
     +                  0.2D0, 3.0D0, -0.6D0, 5.0D0, 0.3D0, 2.0D0,
     +                  2.0D0, 2.0D0, 0.1D0, 4.0D0, -0.3D0, 6.0D0,
     +                  -0.5D0, 7.0D0, -0.1D0, 3.0D0/
      DATA              DTRUE1/0.0D0, 0.3D0, 0.5D0, 0.7D0, 0.6D0/
      DATA              DTRUE3/0.0D0, 0.3D0, 0.7D0, 1.1D0, 1.0D0/
      DATA              DTRUE5/0.10D0, 2.0D0, 2.0D0, 2.0D0, 2.0D0,
     +                  2.0D0, 2.0D0, 2.0D0, -0.3D0, 3.0D0, 3.0D0,
     +                  3.0D0, 3.0D0, 3.0D0, 3.0D0, 3.0D0, 0.0D0, 0.0D0,
     +                  4.0D0, 4.0D0, 4.0D0, 4.0D0, 4.0D0, 4.0D0,
     +                  0.20D0, -0.60D0, 0.30D0, 5.0D0, 5.0D0, 5.0D0,
     +                  5.0D0, 5.0D0, 0.03D0, -0.09D0, 0.15D0, -0.03D0,
     +                  6.0D0, 6.0D0, 6.0D0, 6.0D0, 0.10D0, 8.0D0,
     +                  8.0D0, 8.0D0, 8.0D0, 8.0D0, 8.0D0, 8.0D0,
     +                  0.09D0, 9.0D0, 9.0D0, 9.0D0, 9.0D0, 9.0D0,
     +                  9.0D0, 9.0D0, 0.09D0, 2.0D0, -0.12D0, 2.0D0,
     +                  2.0D0, 2.0D0, 2.0D0, 2.0D0, 0.06D0, 3.0D0,
     +                  -0.18D0, 5.0D0, 0.09D0, 2.0D0, 2.0D0, 2.0D0,
     +                  0.03D0, 4.0D0, -0.09D0, 6.0D0, -0.15D0, 7.0D0,
     +                  -0.03D0, 3.0D0/
      DATA              ITRUE2/0, 1, 2, 2, 3/
*     .. Executable Statements ..
      DO 80 INCX = 1, 2
         DO 60 NP1 = 1, 5
            N = NP1 - 1
            LEN = 2*MAX(N,1)
*           .. Set vector arguments ..
            DO 20 I = 1, LEN
               SX(I) = DV(I,NP1,INCX)
   20       CONTINUE
*
            IF (ICASE.EQ.7) THEN
*              .. DNRM2 ..
               STEMP(1) = DTRUE1(NP1)
               CALL STEST1(DNRM2(N,SX,INCX),STEMP,STEMP,SFAC)
            ELSE IF (ICASE.EQ.8) THEN
*              .. DASUM ..
               STEMP(1) = DTRUE3(NP1)
               CALL STEST1(DASUM(N,SX,INCX),STEMP,STEMP,SFAC)
            ELSE IF (ICASE.EQ.9) THEN
*              .. DSCAL ..
               CALL DSCAL(N,SA((INCX-1)*5+NP1),SX,INCX)
               DO 40 I = 1, LEN
                  STRUE(I) = DTRUE5(I,NP1,INCX)
   40          CONTINUE
               CALL STEST(LEN,SX,STRUE,STRUE,SFAC)
            ELSE IF (ICASE.EQ.10) THEN
*              .. IDAMAX ..
               CALL ITEST1(IDAMAX(N,SX,INCX),ITRUE2(NP1))
            ELSE
               WRITE (NOUT,*) ' Shouldn''t be here in CHECK1'
               STOP
            END IF
   60    CONTINUE
   80 CONTINUE
      RETURN
      END
      SUBROUTINE CHECK2(SFAC)
*     .. Parameters ..
      INTEGER           NOUT
      PARAMETER         (NOUT=6)
*     .. Scalar Arguments ..
      DOUBLE PRECISION  SFAC
*     .. Scalars in Common ..
      INTEGER           ICASE, INCX, INCY, MODE, N
      LOGICAL           PASS
*     .. Local Scalars ..
      DOUBLE PRECISION  SA, SC, SS
      INTEGER           I, J, KI, KN, KSIZE, LENX, LENY, MX, MY
*     .. Local Arrays ..
      DOUBLE PRECISION  DT10X(7,4,4), DT10Y(7,4,4), DT7(4,4),
     +                  DT8(7,4,4), DT9X(7,4,4), DT9Y(7,4,4), DX1(7),
     +                  DY1(7), SSIZE1(4), SSIZE2(14,2), STX(7), STY(7),
     +                  SX(7), SY(7)
      INTEGER           INCXS(4), INCYS(4), LENS(4,2), NS(4)
*     .. External Functions ..
      DOUBLE PRECISION  DDOT