gcc/testsuite/gfortran.dg/mod_large_1.f90

   1 ! { dg-do run }
   2 ! PR fortran/24518
   3 ! MOD/MODULO of large arguments.
   4 ! The naive algorithm goes pear-shaped for large arguments, instead
   5 ! use fmod.
   6 ! Here we test only with constant arguments (evaluated with
   7 ! mpfr_fmod), as we don't want to cause failures on targets with a
   8 ! crappy libm.
   9 program mod_large_1
  10   implicit none
  11   real :: r1
  12   r1 = mod (1e22, 1.7)
  13   if (abs(r1 - 0.995928764) > 1e-5) STOP 1
  14   r1 = modulo (1e22, -1.7)
  15   if (abs(r1 + 0.704071283) > 1e-5) STOP 2
  16 end program mod_large_1