gcc/testsuite/gfortran.dg/isnan_2.f90

   1 ! Test for the ISNAN intrinsic on constants
   2 !
   3 ! { dg-do run }
   4 ! { dg-options "-fno-range-check" }
   5 ! { dg-add-options ieee }
   6 ! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
   7 !
   8   implicit none
   9   character(len=1) :: s
  10   write(s,'(L1)') isnan(0.)
  11   if (s /= 'F') call abort
  12
  13   write(s,'(L1)') isnan(exp(huge(0.)))
  14   if (s /= 'F') call abort
  15
  16   write(s,'(L1)') isnan(0./0.)
  17   if (s /= 'T') call abort
  18 end