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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gfortran.fortran-torture/] [execute/] [pr40021.f] - Blame information for rev 304

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Line No. Rev Author Line
1 303 jeremybenn
C Derived from lapack
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        PROGRAM test
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        DOUBLE PRECISION DA
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        INTEGER I, N
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        DOUBLE PRECISION DX(9),DY(9)
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        EXTERNAL DAXPY
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        N=5
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        DA=1.0
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        DATA DX/-2, -1, -3, -4, 1, 2, 10, 15, 14/
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        DATA DY/0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0/
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        CALL DAXPY (N,DA,DX,DY)
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        DO 10 I = 1, N
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          if (DX(I).ne.DY(I)) call abort
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10      CONTINUE
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        STOP
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        END
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      SUBROUTINE DAXPY(N,DA,DX,DY)
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      DOUBLE PRECISION DA
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      INTEGER N
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      DOUBLE PRECISION DX(*),DY(*)
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      INTEGER I,IX,IY,M,MP1
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      INTRINSIC MOD
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      IF (N.LE.0) RETURN
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   20 M = MOD(N,4)
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      IF (M.EQ.0) GO TO 40
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      DO 30 I = 1,M
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          DY(I) = DY(I) + DA*DX(I)
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   30 CONTINUE
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      IF (N.LT.4) RETURN
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   40 MP1 = M + 1
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      DO 50 I = MP1,N,4
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          DY(I) = DY(I) + DA*DX(I)
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          DY(I+1) = DY(I+1) + DA*DX(I+1)
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          DY(I+2) = DY(I+2) + DA*DX(I+2)
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          DY(I+3) = DY(I+3) + DA*DX(I+3)
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   50 CONTINUE
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      RETURN
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      END

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