#include <CGAL/basic.h>
#include <CGAL/Timer.h>
#include <CGAL/Real_timer.h>

template <class T>
double test_timer() {
    T t;
    CGAL_assertion( ! t.is_running());
    t.start();
    CGAL_assertion( t.is_running());
    t.reset();
    CGAL_assertion( t.is_running());
    t.stop();
    CGAL_assertion( ! t.is_running());
    CGAL_assertion( t.time() >= 0.0);
    std::cout << "time()                 : " << t.time() << "\n";
    CGAL_assertion( t.intervals() == 1);
    CGAL_assertion( t.precision() >= 0.0);
    std::cout << "precision()            : " << t.precision() << "\n"; 
    CGAL_assertion( (t.max)() > 0.0);

    T s;
    s.start();
    double p = 0.0;     
    for ( int i = 0; i < 5; i++) {
        for ( int j = 0; j < 1000000; j++)
            p = p + 1.0;
        std::cout << "time() in " << (i+1) << ". iteration : " << s.time()
                  << "\n";
    }
    // make use of the computed result to stop optimizers from removing
    // the complete loop.
    return p;
}

int main(){
    double p = 0.0;
    std::cout << "CGAL::Timer:\n";
    p += test_timer<CGAL::Timer>();
    std::cout << std::endl;
    std::cout << "CGAL::Real_timer:\n";
    p += test_timer<CGAL::Real_timer>();
    std::cout << std::endl;
    return (p > 0) ? 0 : 1;
}
// EOF //