libcxx/test/std/utilities/template.bitset/bitset.members/flip_all.pass.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // bitset<N>& flip(); // constexpr since C++23
  10
  11 #include <bitset>
  12 #include <cassert>
  13 #include <cstddef>
  14 #include <vector>
  15
  16 #include "../bitset_test_cases.h"
  17 #include "test_macros.h"
  18
  19 template <std::size_t N>
  20 TEST_CONSTEXPR_CXX23 void test_flip_all() {
  21     std::vector<std::bitset<N> > const cases = get_test_cases<N>();
  22     for (std::size_t c = 0; c != cases.size(); ++c) {
  23         std::bitset<N> v1 = cases[c];
  24         std::bitset<N> v2 = v1;
  25         v2.flip();
  26         for (std::size_t i = 0; i < v1.size(); ++i)
  27             assert(v2[i] == ~v1[i]);
  28     }
  29 }
  30
  31 TEST_CONSTEXPR_CXX23 bool test() {
  32   test_flip_all<0>();
  33   test_flip_all<1>();
  34   test_flip_all<31>();
  35   test_flip_all<32>();
  36   test_flip_all<33>();
  37   test_flip_all<63>();
  38   test_flip_all<64>();
  39   test_flip_all<65>();
  40
  41   return true;
  42 }
  43
  44 int main(int, char**) {
  45   test();
  46   test_flip_all<1000>(); // not in constexpr because of constexpr evaluation step limits
  47 #if TEST_STD_VER > 20
  48   static_assert(test());
  49 #endif
  50
  51   return 0;
  52 }