60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// test:
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// bool operator==(const bitset<N>& rhs) const;
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// bool operator!=(const bitset<N>& rhs) const;
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#include <bitset>
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#include <type_traits>
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#include <cstdlib>
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#include <cassert>
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#if defined(__clang__)
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#pragma clang diagnostic ignored "-Wtautological-compare"
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#endif
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template <std::size_t N>
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std::bitset<N>
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make_bitset()
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{
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std::bitset<N> v;
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for (std::size_t i = 0; i < N; ++i)
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v[i] = static_cast<bool>(std::rand() & 1);
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return v;
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}
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template <std::size_t N>
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void test_equality()
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{
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const std::bitset<N> v1 = make_bitset<N>();
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std::bitset<N> v2 = v1;
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assert(v1 == v2);
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const bool greater_than_0 = std::integral_constant<bool, (N > 0)>::value; // avoid compiler warnings
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if (greater_than_0)
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{
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v2[N/2].flip();
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assert(v1 != v2);
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}
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}
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int main()
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{
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test_equality<0>();
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test_equality<1>();
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test_equality<31>();
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test_equality<32>();
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test_equality<33>();
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test_equality<63>();
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test_equality<64>();
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test_equality<65>();
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test_equality<1000>();
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}
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