gcc/testsuite/gfortran.dg/function_optimize_11.f90

   1 ! { dg-do run }
   2 ! { dg-options "-ffrontend-optimize" }
   3 ! Do not move common functions out of implicit DO loop constructors.
   4 program test
   5   integer, parameter :: N = 4
   6   integer, parameter :: dp=kind(1.d0)
   7   real(kind=dp), parameter :: pi=4*atan(1._dp)
   8   real(kind=dp), parameter :: eps = 1.e-14_dp
   9   real(kind=dp) :: h1(0:N-1), h2(0:N-1)
  10   integer i
  11
  12   i = 1
  13   h1 = [(cos(2*pi*mod(i*k,N)/N),k=0,N/2), &
  14        & (sin(2*pi*mod(i*k,N)/N),k=1,N/2-1)]
  15   h2 = (/ 1._dp, 0._dp, -1._dp, 1._dp /)
  16   if (any(abs(h1 - h2) > eps)) STOP 1
  17 end program test