cxx/test/utilities/template.bitset/bitset.members/index_const.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 constexpr bool operator[](size_t pos) const; #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_index_const() { const std::bitset<N> v1 = make_bitset<N>(); if (N > 0) { assert(v1[N/2] == v1.test(N/2)); } } int main() { test_index_const<0>(); test_index_const<1>(); test_index_const<31>(); test_index_const<32>(); test_index_const<33>(); test_index_const<63>(); test_index_const<64>(); test_index_const<65>(); test_index_const<1000>(); }