//===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // size_t count() const; // constexpr since C++23 #include #include #include #include #include "../bitset_test_cases.h" #include "test_macros.h" template TEST_CONSTEXPR_CXX23 void test_count() { std::vector > const cases = get_test_cases(); for (std::size_t c = 0; c != cases.size(); ++c) { const std::bitset v = cases[c]; std::size_t c1 = v.count(); std::size_t c2 = 0; for (std::size_t i = 0; i < v.size(); ++i) if (v[i]) ++c2; assert(c1 == c2); } } TEST_CONSTEXPR_CXX23 bool test() { test_count<0>(); test_count<1>(); test_count<31>(); test_count<32>(); test_count<33>(); test_count<63>(); test_count<64>(); test_count<65>(); return true; } int main(int, char**) { test(); test_count<1000>(); // not in constexpr because of constexpr evaluation step limits #if TEST_STD_VER > 20 static_assert(test()); #endif return 0; }