gcc/testsuite/gfortran.dg/nan_3.f90

   1 ! { dg-do run }
   2 ! { dg-options "-fno-range-check" }
   3 ! { dg-add-options ieee }
   4 ! { dg-skip-if "NaN not supported" { spu-*-* } }
   5 !
   6 ! PR fortran/34319
   7 !
   8 ! Check support of INF/NaN for I/O.
   9 !
  10 program main
  11   implicit none
  12   real :: r
  13   complex :: z
  14   character(len=30) :: str
  15
  16   str = "nan"
  17   read(str,*) r
  18   if (.not.isnan(r)) STOP 1
  19   str = "(nan,4.0)"
  20   read(str,*) z
  21   if (.not.isnan(real(z)) .or. aimag(z) /= 4.0) STOP 2
  22   str = "(7.0,nan)"
  23   read(str,*) z
  24   if (.not.isnan(aimag(z)) .or. real(z) /= 7.0) STOP 3
  25
  26   str = "inFinity"
  27   read(str,*) r
  28   if (r <= huge(r)) STOP 4
  29   str = "(+inFinity,4.0)"
  30   read(str,*) z
  31   if ((real(z) <= huge(r)) .or. aimag(z) /= 4.0) STOP 5
  32   str = "(7.0,-inFinity)"
  33   read(str,*) z
  34   if ((aimag(z) >= -huge(r)) .or. real(z) /= 7.0) STOP 6
  35
  36   str = "inf"
  37   read(str,*) r
  38   if (r <= huge(r)) STOP 7
  39   str = "(+inf,4.0)"
  40   read(str,*) z
  41   if ((real(z) <= huge(r)) .or. aimag(z) /= 4.0) STOP 8
  42   str = "(7.0,-inf)"
  43   read(str,*) z
  44   if ((aimag(z) >= -huge(r)) .or. real(z) /= 7.0) STOP 9
  45
  46 end program main