gcc/testsuite/gfortran.dg/nan_5.f90

   1 ! Check that we correctly simplify ISNAN
   2 !
   3 ! { dg-do compile }
   4 !
   5 ! { dg-options "-fno-range-check" }
   6 ! { dg-add-options ieee }
   7 ! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
   8
   9   implicit none
  10   real, parameter :: inf = 2 * huge(inf)
  11   real, parameter :: nan1 = 0. / 0.
  12   real, parameter :: nan2 = 1.5 * nan1
  13   real, parameter :: nan3 = inf / inf
  14   real, parameter :: nan4 = inf - inf
  15   real, parameter :: nan5 = 0. * inf
  16   real, parameter :: normal = 42.
  17
  18   integer(kind=merge(4, 0, isnan(nan1))) :: a
  19   integer(kind=merge(4, 0, isnan(nan2))) :: b
  20   integer(kind=merge(4, 0, isnan(nan3))) :: c
  21   integer(kind=merge(4, 0, isnan(nan4))) :: d
  22   integer(kind=merge(4, 0, isnan(nan5))) :: e
  23
  24   integer(kind=merge(0, 4, isnan(inf))) :: f
  25   integer(kind=merge(0, 4, isnan(-inf))) :: g
  26   integer(kind=merge(0, 4, isnan(normal))) :: h
  27
  28   end