Timing code snippets

timing.cpp

#include <iostream>
#include <chrono>

class Timer {
public:
    Timer() : beg_(clock_::now()) {}
    void reset() { beg_ = clock_::now(); }
    double elapsed() const { 
        return std::chrono::duration_cast<second_>
            (clock_::now() - beg_).count(); }

private:
    typedef std::chrono::high_resolution_clock clock_;
    typedef std::chrono::duration<double, std::ratio<1> > second_;
    std::chrono::time_point<clock_> beg_;
};

int main() {
	Timer t;
  
	int num = 1000000000;
	float* a = new float[num];
	uint16_t* b = new uint16_t[num];
	t.reset();
	for (int i=0;i<num; i++) {
		 *(a++) += (float) *(b++);
	}
	std::cout << t.elapsed()  << std::endl;	

}

timing.py

from timeit import default_timer as timer

start = timer()
# ...
end = timer()
print(end - start)