// Bit Test.cpp : Defines the entry point for the console application.


#define WIN32_LEAN_AND_MEAN

#include <stdio.h>
#include <conio.h>
#include <windows.h>
#include <math.h>

typedef unsigned __int32 uint32;

const __int64 NUM_MAX = 1000000000;

int main(int argc, char* argv[])
{
	__int64 i;
	uint32 Pos;
	uint32 Number = 0;
	LARGE_INTEGER Time1, Time2, TimeT;

	Pos = 3;

	printf ("==================== Bit Test ====================\n\n");

	printf ("This is a test to compare two different ways of\n");
	printf ("turning on and off bits. %I64i operations will be\n", NUM_MAX);
	printf ("performed for each test.\n\n");

	printf ("Press any key to continue...");

	getch ();

	printf ("\n\nPerforming test for \"1 << BitPos\"... ");

	QueryPerformanceCounter (&TimeT);

	for (i = 0; i < NUM_MAX; i++)
	{
		Number |= 1 << Pos;
	}

	QueryPerformanceCounter (&Time1);

	Time1.QuadPart -= TimeT.QuadPart;

	printf ("completed.\n\n");

	printf ("Performing test for \"(uint32) pow (2, Pos)\"... ");

	Number = 0;

	QueryPerformanceCounter (&TimeT);

	for (i = 0; i < NUM_MAX; i++)
	{
		Number |= (uint32) pow (2, Pos);
	}

	QueryPerformanceCounter (&Time2);

	Time2.QuadPart -= TimeT.QuadPart;

	printf ("completed.\n\n");

	printf ("Time for method 1: %I64i\n", Time1.QuadPart);
	printf ("Time for method 2: %I64i\n", Time2.QuadPart);
	
	if (Time1.QuadPart < Time2.QuadPart)
		printf ("Method 1 is the quicker.\n\n");

	if (Time1.QuadPart > Time2.QuadPart)
		printf ("Method 2 is the quicker.\n\n");

	if (Time1.QuadPart == Time2.QuadPart)
		printf ("Both methods took exactly the same amount of time.\n\n");

	getch ();

	return 0;
}