cxx/test/utilities/template.bitset/bitset.members/right_shift_eq.pass.cpp

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//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // test bitset<N>& operator<<=(size_t pos); #include <bitset> #include <cstdlib> #include <cassert> template <std::size_t N> std::bitset<N> make_bitset() { std::bitset<N> v; for (std::size_t i = 0; i < N; ++i) v[i] = static_cast<bool>(std::rand() & 1); return v; } template <std::size_t N> void test_right_shift() { for (std::size_t s = 0; s <= N+1; ++s) { std::bitset<N> v1 = make_bitset<N>(); std::bitset<N> v2 = v1; v1 >>= s; for (std::size_t i = 0; i < N; ++i) if (i + s < N) assert(v1[i] == v2[i + s]); else assert(v1[i] == 0); } } int main() { test_right_shift<0>(); test_right_shift<1>(); test_right_shift<31>(); test_right_shift<32>(); test_right_shift<33>(); test_right_shift<63>(); test_right_shift<64>(); test_right_shift<65>(); test_right_shift<1000>(); }