High Frequency Timer for windows

timer.hpp

// High Frequency Timer
// 
// This is a simple timer for windows.
//
// QueryPerformanceCounter
//   http://msdn.microsoft.com/en-us/library/windows/desktop/ms644904(v=vs.85).aspx
//
// QueryPerformanceFrequency
//   http://msdn.microsoft.com/en-us/library/windows/desktop/ms644905(v=vs.85).aspx
//
//

// Example

// Timer t;
//
// t.start()
//
// for ( unsigned int i = 0; i < 1000; i++ )
// {
//	std::cout << "Elapsed since start: " << t.getSeconds() << std::endl;
// }

#ifndef INLINE_TIMER_H
#define INLINE_TIMER_H

include <windows.h>

class Timer
{
	public:
		inline void start()
		{
			QueryPerformanceCounter(&start);
		};

		inline float getSeconds() const
		{

			LARGE_INTEGER now;
			LARGE_INTEGER freq;

			QueryPerformanceCounter(&now);
			QueryPerformanceFrequency(&freq);

			return (now.QuadPart - start.QuadPart) / static_cast<float>(freq.QuadPart);

		};

	private:

		LARGE_INTEGER start;
};

#endif