gcc/testsuite/gfortran.dg/hypot_1.f90

   1 ! { dg-do run }
   2
   3 program test
   4   implicit none
   5
   6   interface check
   7     procedure check_r4
   8     procedure check_r8
   9   end interface check
  10
  11   real(kind=4) :: x4, y4
  12   real(kind=8) :: x8, y8
  13
  14   x8 = 1.9_8 ; x4 = 1.9_4
  15   y8 = -2.1_8 ; y4 = -2.1_4
  16
  17   call check(hypot(x8,y8), hypot(1.9_8,-2.1_8))
  18   call check(hypot(x4,y4), hypot(1.9_4,-2.1_4))
  19
  20 contains
  21   subroutine check_r4 (a, b)
  22     real(kind=4), intent(in) :: a, b
  23     if (abs(a - b) > 1.e-5 * abs(b)) STOP 1
  24   end subroutine
  25   subroutine check_r8 (a, b)
  26     real(kind=8), intent(in) :: a, b
  27     if (abs(a - b) > 1.e-7 * abs(b)) STOP 2
  28   end subroutine
  29 end program test