title: Detect If Two Integers Have Opposite Signs
signature: function detectIfTwoIntegersHaveOppositeSigns($x, $y) {
source_py: def detect_if_two_integers_have_opposite_signs(x, y):
      return ((x ^ y) < 0)
source_cpp: bool detect_if_two_integers_have_opposite_signs(int x, int y) {
    return ( ( x ^ y ) < 0 );
  }