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50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// test bool none() const;
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#include <bitset>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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template <std::size_t N>
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void test_none()
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{
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std::bitset<N> v;
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v.reset();
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assert(v.none() == true);
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v.set();
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assert(v.none() == (N == 0));
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const bool greater_than_1 = std::integral_constant<bool, (N > 1)>::value; // avoid compiler warnings
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if (greater_than_1)
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{
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v[N/2] = false;
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assert(v.none() == false);
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v.reset();
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v[N/2] = true;
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assert(v.none() == false);
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}
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}
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int main(int, char**)
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{
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test_none<0>();
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test_none<1>();
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test_none<31>();
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test_none<32>();
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test_none<33>();
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test_none<63>();
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test_none<64>();
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test_none<65>();
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test_none<1000>();
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return 0;
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}
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