77 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410 11// <charconv>12 13// Bitmask type14// enum class chars_format {15// scientific = unspecified,16// fixed = unspecified,17// hex = unspecified,18// general = fixed | scientific19// };20 21#include <cassert>22#include <charconv>23#include <type_traits>24 25#include "test_macros.h"26 27constexpr bool test() {28 using cf = std::chars_format;29 using ut = std::underlying_type<cf>::type;30 31 {32 cf x = cf::scientific;33 x |= cf::fixed;34 assert(x == cf::general);35 }36 {37 cf x = cf::general;38 x &= cf::fixed;39 assert(x == cf::fixed);40 }41 {42 cf x = cf::general;43 x ^= cf::fixed;44 assert(x == cf::scientific);45 }46 47 assert(static_cast<ut>(cf::scientific & (cf::fixed | cf::hex)) == 0);48 assert(static_cast<ut>(cf::fixed & (cf::scientific | cf::hex)) == 0);49 assert(static_cast<ut>(cf::hex & (cf::scientific | cf::fixed)) == 0);50 51 assert((cf::scientific | cf::fixed) == cf::general);52 53 assert(static_cast<ut>(cf::scientific & cf::fixed) == 0);54 55 assert((cf::general ^ cf::fixed) == cf::scientific);56 57 assert((~cf::hex & cf::general) == cf::general);58 59 return true;60}61 62std::chars_format x;63static_assert(std::is_same<std::chars_format, decltype(~x)>::value, "");64static_assert(std::is_same<std::chars_format, decltype(x & x)>::value, "");65static_assert(std::is_same<std::chars_format, decltype(x | x)>::value, "");66static_assert(std::is_same<std::chars_format, decltype(x ^ x)>::value, "");67static_assert(std::is_same<std::chars_format&, decltype(x &= x)>::value, "");68static_assert(std::is_same<std::chars_format&, decltype(x |= x)>::value, "");69static_assert(std::is_same<std::chars_format&, decltype(x ^= x)>::value, "");70 71int main(int, char**) {72 assert(test());73 static_assert(test(), "");74 75 return 0;76}77