gcc/testsuite/gfortran.dg/ieee/ieee_6.f90

   1 ! { dg-do run }
   2 ! { dg-skip-if "PR libfortran/78314" { aarch64*-*-gnu* arm*-*-gnueabi arm*-*-gnueabihf } }
   3 !
   4 ! This test will fail on older x86_64 glibc (< 2.20), due to this bug:
   5 ! https://sourceware.org/bugzilla/show_bug.cgi?id=16198
   6 ! We usually won't see it anyway, because on such systems x86_64 assembly
   7 ! (libgfortran/config/fpu-387.h) is used.
   8 !
   9   use :: ieee_arithmetic
  10   implicit none
  11
  12   type(ieee_status_type) :: s1, s2
  13   logical :: flags(5), halt(5), haltworks
  14   type(ieee_round_type) :: mode
  15   real, volatile :: x
  16
  17   ! Test IEEE_GET_STATUS and IEEE_SET_STATUS
  18
  19   call ieee_set_flag(ieee_all, .false.)
  20   call ieee_set_rounding_mode(ieee_down)
  21   call ieee_set_halting_mode(ieee_all, .false.)
  22   haltworks = ieee_support_halting(ieee_overflow)
  23
  24   call ieee_get_status(s1)
  25   call ieee_set_status(s1)
  26
  27   call ieee_get_flag(ieee_all, flags)
  28   if (any(flags)) STOP 1
  29   call ieee_get_rounding_mode(mode)
  30   if (mode /= ieee_down) STOP 2
  31   call ieee_get_halting_mode(ieee_all, halt)
  32   if (any(halt)) STOP 3
  33
  34   call ieee_set_rounding_mode(ieee_to_zero)
  35   call ieee_set_flag(ieee_underflow, .true.)
  36   call ieee_set_halting_mode(ieee_overflow, .true.)
  37   x = -1
  38   x = sqrt(x)
  39   if (.not. ieee_is_nan(x)) STOP 4
  40
  41   call ieee_get_status(s2)
  42
  43   call ieee_get_flag(ieee_all, flags)
  44   if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
  45              .or. all(flags .eqv. [.false.,.false.,.true.,.true.,.true.]) &
  46              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]) &
  47              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.true.]))) STOP 5
  48   call ieee_get_rounding_mode(mode)
  49   if (mode /= ieee_to_zero) STOP 6
  50   call ieee_get_halting_mode(ieee_all, halt)
  51   if ((haltworks .and. .not. halt(1)) .or. any(halt(2:))) STOP 7
  52
  53   call ieee_set_status(s2)
  54
  55   call ieee_get_flag(ieee_all, flags)
  56   if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
  57              .or. all(flags .eqv. [.false.,.false.,.true.,.true.,.true.]) &
  58              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]) &
  59              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.true.]))) STOP 8
  60   call ieee_get_rounding_mode(mode)
  61   if (mode /= ieee_to_zero) STOP 9
  62   call ieee_get_halting_mode(ieee_all, halt)
  63   if ((haltworks .and. .not. halt(1)) .or. any(halt(2:))) STOP 10
  64
  65   call ieee_set_status(s1)
  66
  67   call ieee_get_flag(ieee_all, flags)
  68   if (any(flags)) STOP 11
  69   call ieee_get_rounding_mode(mode)
  70   if (mode /= ieee_down) STOP 12
  71   call ieee_get_halting_mode(ieee_all, halt)
  72   if (any(halt)) STOP 13
  73
  74   call ieee_set_status(s2)
  75
  76   call ieee_get_flag(ieee_all, flags)
  77   if (.not. (all(flags .eqv. [.false.,.false.,.true.,.true.,.false.]) &
  78              .or. all(flags .eqv. [.false.,.false.,.true.,.true.,.true.]) &
  79              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.false.]) &
  80              .or. all(flags .eqv. [.false.,.false.,.true.,.false.,.true.]))) STOP 14
  81   call ieee_get_rounding_mode(mode)
  82   if (mode /= ieee_to_zero) STOP 15
  83   call ieee_get_halting_mode(ieee_all, halt)
  84   if ((haltworks .and. .not. halt(1)) .or. any(halt(2:))) STOP 16
  85
  86 end