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

#pragma comment(lib, "winmm.lib")

#define MUL(c, a, b)		{	\
	DWORD tempA = a;			\
	DWORD tempB = b;			\
	__asm {						\
		__asm mov  eax, tempA	\
		__asm mov  edx, tempB	\
		__asm mul  edx			\
		__asm shr  eax, 16		\
		__asm shl  edx, 16		\
		__asm or   eax, edx		\
		__asm mov  c,   eax		\
	} }

#define ESTIMATE		10000000

void main(void)
 {
	DWORD tm[3];
	DWORD a, b, c;
	int i;
	a = 100;
	b = 200;

	tm[0] = timeGetTime( );

	for(i = 0; i < ESTIMATE; i ++)
		MUL(c, a, b);

	tm[1] = timeGetTime( );

	for(i = 0; i < ESTIMATE; i ++)
		c = MulDiv(a, b, (1<<16));

	tm[2] = timeGetTime( );

	printf("%d , %d\n", tm[1] - tm[0], tm[2] -tm[1]);

 }