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bitset-01.cc
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bitset-01.cc
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//
// Program
// std::bitset usage.
//
// Compile
// g++ -Wall -Wextra -pedantic -std=c++17 -o bitset-01 bitset-01.cc
//
// Execution
// ./bitset-01
//
#include <iostream>
#include <bitset>
#include <cassert>
//
// Entry function
//
int main() {
std::cout << "--- std::bitset ---" << '\n';
std::bitset<4> b4;
assert(b4 == 0b0000);
std::bitset<4> b4i {};
assert(b4i == 0b0000);
std::bitset<4> bh{0xF};
assert(bh == 0b1111);
std::bitset<4> bs{"1111"};
assert(bs == 0b1111);
std::bitset<4> bb{0b110};
assert(bb == 0b0110);
std::bitset<4> bn{4};
assert(bn == 0b0100);
bn.set(0);
assert(bn == 0b0101);
bn.reset(0);
assert(bn == 0b0100);
bn.reset();
assert(bn == 0b0000);
bn.flip(0);
assert(bn == 0b0001);
bn.flip();
assert(bn == 0b1110);
bn.set(0, true);
assert(bn == 0b1111);
bn.set(1, false);
assert(bn == 0b1101);
bn <<= 2;
assert(bn == 0b0100);
bn >>= 2;
assert(bn == 0b0001);
bn = 0b0000;
assert(bn.all() == false); // has all 1?
assert(bn.any() == false); // has any 1?
assert(bn.none() == true); // has all zero?
bn = 0b1111;
assert(bn.all() == true); // has all 1?
assert(bn.any() == true); // has any 1?
assert(bn.none() == false); // has all zero?
bn = 0b0101;
assert(bn.all() == false); // has all 1?
assert(bn.any() == true); // has any 1?
assert(bn.none() == false); // has all zero?
bn = 0x4;
assert(bn.size() == 4);
assert(bn.count() == 1);
assert(bn.to_string() == "0100");
assert(bn.to_ulong() == 4UL);
assert(bn.to_ullong() == 4ULL);
return 0;
}