cmake/FindCXXFeatures/cxx11-test-constexpr.cxx

   1 constexpr int square(int x)
   2 {
   3         return x*x;
   4 }
   5
   6 constexpr int the_answer()
   7 {
   8         return 42;
   9 }
  10
  11 int main()
  12 {
  13         int test_arr[square(3)];
  14         bool ret = (
  15                 (square(the_answer()) == 1764) &&
  16                 (sizeof(test_arr)/sizeof(test_arr[0]) == 9)
  17         );
  18         return ret ? 0 : 1;
  19 }