| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <algorithm> |
| // XFAIL: c++03, c++11, c++14 |
| |
| // template<class T, class Compare> |
| // const T& |
| // clamp(const T& v, const T& lo, const T& hi, Compare comp); |
| |
| #include <algorithm> |
| #include <functional> |
| #include <cassert> |
| |
| template <class T, class C> |
| void |
| test(const T& v, const T& lo, const T& hi, C c, const T& x) |
| { |
| assert(&std::clamp(v, lo, hi, c) == &x); |
| } |
| |
| int main() |
| { |
| { |
| int x = 0; |
| int y = 0; |
| int z = 0; |
| test(x, y, z, std::greater<int>(), x); |
| test(y, x, z, std::greater<int>(), y); |
| } |
| { |
| int x = 0; |
| int y = 1; |
| int z = -1; |
| test(x, y, z, std::greater<int>(), x); |
| test(y, x, z, std::greater<int>(), x); |
| } |
| { |
| int x = 1; |
| int y = 0; |
| int z = 0; |
| test(x, y, z, std::greater<int>(), y); |
| test(y, x, z, std::greater<int>(), y); |
| } |
| #if _LIBCPP_STD_VER > 11 |
| { |
| typedef int T; |
| constexpr T x = 1; |
| constexpr T y = 0; |
| constexpr T z = 0; |
| static_assert(std::clamp(x, y, z, std::greater<T>()) == y, "" ); |
| static_assert(std::clamp(y, x, z, std::greater<T>()) == y, "" ); |
| } |
| #endif |
| } |