#include <windows.h>
#include <cstdio>

__declspec(naked)
unsigned __int64 __cdecl rdtsc(void)
{
	__asm
	{
		rdtsc
		ret       ; return value at EDX:EAX
	}
}

int main(int argc, char *argv[])
{
	unsigned __int64 begin;
	unsigned __int64 end;
	unsigned __int64 result = 0;
//	unsigned __int64 overhead = 0;

	int  number = 1 << 16;
	int  temp;
	int  i;

	printf("Number: %d\n", number);

//	overhead = rdtsc();
//	for (int i = 0; i < 1<<16; i++);
//	overhead -= rdtsc();

	for (i = 0; i < 1<<16; i++)
	{
		begin = rdtsc();

		temp = number % 2;

		end = rdtsc();

		result += end - begin;
	}

	printf("Ticks: %f\n", result / ((float)(1<<16)));

	system("PAUSE");
}