gistfile1.cpp

#include <iostream>
#include <limits>

#include <boost/timer.hpp>

struct BitTest {
    int i;
    bool a : 1;
};

struct Test {
    int i;
    bool a;
};

void test1(int max) {
    BitTest bt;
    for (int i = 0; i < max; ++i) {
        bt.a = i%2;
    }
}

void test2(int max) {
    Test t;
    for (int i = 0; i < max; ++i) {
        t.a = i%2;
    }
}


int main()
{
    const int max =std::numeric_limits<int>::max();
    boost::timer t;
    t.restart();
    test1(1000);
    test2(1000);
    t.elapsed();

    t.restart();
    test1(max);
    const double e1 = t.elapsed();

    t.restart();
    test2(max);
    const double e2 = t.elapsed();

    std::cout << "(" << max << ") " << e1 << ", " << e2 << "\n";

    return 0;
}