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cpp-lib/src/bit.cpp at master · dst/cpp-lib · GitHub

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/*

* bitlib.cpp

*

* Created on: Nov 2, 2013

* Author: dst

*/

#include <bitset>

#include <cassert>

#include <cmath>

#include <iostream>

using namespace std;

using std::bitset;

inline void bit() {

// bitset

bitset<10> empty;

assert(empty[0] == false);

assert(empty[9] == false);

// initialize from string

bitset<10> second("01011");

// second is 0000001011

assert(second.to_ulong() == 11);

// bitset stores bits in reverse order

bitset<4> bits; // 0000

assert(bits.to_ulong() == 0);

bits[1]= 1; // 0010

assert(bits.to_ulong() == 2);

bits[2]= 1; // 0110

assert(bits.to_ulong() == 6);

// bit operations

assert(1 << 20 == 1024 * 1024);

}

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