libcxx/test/std/utilities/template.bitset/bitset.members/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 // bool all() const; // constexpr since C++23
  10
  11 #include <bitset>
  12 #include <cassert>
  13 #include <cstddef>
  14
  15 #include "test_macros.h"
  16
  17 template <std::size_t N>
  18 TEST_CONSTEXPR_CXX23 void test_all() {
  19     std::bitset<N> v;
  20     v.reset();
  21     assert(v.all() == (N == 0));
  22     v.set();
  23     assert(v.all() == true);
  24     if (v.size() > 1) {
  25         v[N/2] = false;
  26         assert(v.all() == false);
  27     }
  28 }
  29
  30 TEST_CONSTEXPR_CXX23 bool test() {
  31   test_all<0>();
  32   test_all<1>();
  33   test_all<31>();
  34   test_all<32>();
  35   test_all<33>();
  36   test_all<63>();
  37   test_all<64>();
  38   test_all<65>();
  39   test_all<1000>();
  40
  41   return true;
  42 }
  43
  44 int main(int, char**) {
  45   test();
  46 #if TEST_STD_VER > 20
  47   static_assert(test());
  48 #endif
  49
  50   return 0;
  51 }