53 lines
1.2 KiB
Fortran
53 lines
1.2 KiB
Fortran
! Test that NINT gives right results even in corner cases
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!
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! PR 31202
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! http://gcc.gnu.org/ml/fortran/2005-04/msg00139.html
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!
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! { dg-do run }
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! { dg-xfail-run-if "PR 33271, math library bug" { powerpc-ibm-aix powerpc*-*-linux* *-*-mingw* } { "-O0" } { "" } }
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real(kind=8) :: a
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integer(kind=8) :: i1, i2
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real :: b
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integer :: j1, j2
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a = nearest(0.5_8,-1.0_8)
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i2 = nint(nearest(0.5_8,-1.0_8))
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i1 = nint(a)
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if (i1 /= 0 .or. i2 /= 0) call abort
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a = 0.5_8
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i2 = nint(0.5_8)
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i1 = nint(a)
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if (i1 /= 1 .or. i2 /= 1) call abort
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a = nearest(0.5_8,1.0_8)
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i2 = nint(nearest(0.5_8,1.0_8))
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i1 = nint(a)
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if (i1 /= 1 .or. i2 /= 1) call abort
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b = nearest(0.5,-1.0)
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j2 = nint(nearest(0.5,-1.0))
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j1 = nint(b)
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if (j1 /= 0 .or. j2 /= 0) call abort
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b = 0.5
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j2 = nint(0.5)
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j1 = nint(b)
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if (j1 /= 1 .or. j2 /= 1) call abort
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b = nearest(0.5,1.0)
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j2 = nint(nearest(0.5,1.0))
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j1 = nint(b)
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if (j1 /= 1 .or. j2 /= 1) call abort
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a = 4503599627370497.0_8
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i1 = nint(a,kind=8)
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i2 = nint(4503599627370497.0_8,kind=8)
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if (i1 /= i2 .or. i1 /= 4503599627370497_8) call abort
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a = -4503599627370497.0_8
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i1 = nint(a,kind=8)
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i2 = nint(-4503599627370497.0_8,kind=8)
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if (i1 /= i2 .or. i1 /= -4503599627370497_8) call abort
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end
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