a90c6dd460
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.2 KiB
C++
51 lines
1.2 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 bitset<N> operator<<(size_t pos) const;
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#include <bitset>
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#include <cstdlib>
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#include <cassert>
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#pragma clang diagnostic ignored "-Wtautological-compare"
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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_left_shift()
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{
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for (std::size_t s = 0; s <= N+1; ++s)
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{
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std::bitset<N> v1 = make_bitset<N>();
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std::bitset<N> v2 = v1;
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assert((v1 <<= s) == (v2 << s));
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}
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}
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int main()
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{
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test_left_shift<0>();
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test_left_shift<1>();
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test_left_shift<31>();
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test_left_shift<32>();
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test_left_shift<33>();
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test_left_shift<63>();
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test_left_shift<64>();
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test_left_shift<65>();
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test_left_shift<1000>();
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}
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