| //<==----------------------------------------------------------------------<==// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //<==----------------------------------------------------------------------<==// |
| |
| // UNSUPPORTED: c++98, c++03, c++11 |
| |
| // <propagate_const> |
| |
| // template <class T> constexpr bool operator<=(const propagate_const<T>& x, const propagate_const<T>& y); |
| // template <class T> constexpr bool operator<=(const T& x, const propagate_const<T>& y); |
| // template <class T> constexpr bool operator<=(const propagate_const<T>& x, const T& y); |
| |
| #include <experimental/propagate_const> |
| #include "propagate_const_helpers.h" |
| #include <cassert> |
| |
| using std::experimental::propagate_const; |
| |
| constexpr bool operator<=(const X &lhs, const X &rhs) { |
| return lhs.i_ <= rhs.i_; |
| } |
| |
| int main() { |
| constexpr X x1_1(1); |
| constexpr X x2_1(1); |
| constexpr X x3_2(2); |
| |
| static_assert(x1_1 <= x2_1, ""); |
| static_assert(x1_1 <= x3_2, ""); |
| static_assert(!(x3_2 <= x1_1), ""); |
| |
| typedef propagate_const<X> P; |
| |
| constexpr P p1_1(1); |
| constexpr P p2_1(1); |
| constexpr P p3_2(2); |
| |
| static_assert(p1_1 <= p2_1, ""); |
| static_assert(p1_1 <= p3_2, ""); |
| static_assert(!(p3_2 <= p1_1), ""); |
| |
| static_assert(p1_1 <= x2_1, ""); |
| static_assert(p1_1 <= x3_2, ""); |
| static_assert(!(p3_2 <= x1_1), ""); |
| |
| static_assert(x1_1 <= p2_1, ""); |
| static_assert(x1_1 <= p3_2, ""); |
| static_assert(!(x3_2 <= p1_1), ""); |
| |
| } |
