54 lines
1.7 KiB
Fortran
54 lines
1.7 KiB
Fortran
! { dg-do run }
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! { dg-options "-fno-range-check" }
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! PR fortran/32083
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!
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! Test transfers of +Inf and -Inf
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! Testcase contributed by Jos de Kloe <kloedej@knmi.nl>
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!
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PROGRAM TestInfinite
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IMPLICIT NONE
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integer, parameter :: i8_ = Selected_Int_Kind(18) ! = integer*8
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integer, parameter :: r8_ = Selected_Real_Kind(15,307) ! = real*8
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integer(i8_), parameter :: bit_pattern_PosInf_i8_p = 9218868437227405312_i8_
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integer(i8_), parameter :: bit_pattern_NegInf_i8_p = -4503599627370496_i8_
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integer(i8_) :: bit_pattern_PosInf_i8 = 9218868437227405312_i8_
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integer(i8_) :: bit_pattern_NegInf_i8 = -4503599627370496_i8_
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integer(i8_) :: bit_pattern_PosInf_i8_hex
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integer(i8_) :: bit_pattern_NegInf_i8_hex
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integer(i8_) :: i
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real(r8_) :: r
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data bit_pattern_PosInf_i8_hex /z'7FF0000000000000'/
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!data bit_pattern_NegInf_i8_hex /z'FFF0000000000000'/
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! not portable, replaced by:
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bit_pattern_NegInf_i8_hex = ibset(bit_pattern_PosInf_i8_hex,63)
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if (bit_pattern_NegInf_i8_hex /= bit_pattern_NegInf_i8) call abort()
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if (bit_pattern_PosInf_i8_hex /= bit_pattern_PosInf_i8) call abort()
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r = transfer(bit_pattern_PosInf_i8,r)
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if (r /= 1.0_r8_/0.0_r8_) call abort()
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i = transfer(r,i)
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if (bit_pattern_PosInf_i8 /= i) call abort()
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r = transfer(bit_pattern_NegInf_i8,r)
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if (r /= -1.0_r8_/0.0_r8_) call abort()
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i = transfer(r,i)
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if (bit_pattern_NegInf_i8 /= i) call abort()
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r = transfer(bit_pattern_PosInf_i8_p,r)
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if (r /= 1.0_r8_/0.0_r8_) call abort()
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i = transfer(r,i)
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if (bit_pattern_PosInf_i8_p /= i) call abort()
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r = transfer(bit_pattern_NegInf_i8_p,r)
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if (r /= -1.0_r8_/0.0_r8_) call abort()
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i = transfer(r,i)
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if (bit_pattern_NegInf_i8_p /= i) call abort()
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END PROGRAM TestInfinite
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