#include <stdio.h>
#include <stdlib.h>

/**
 * Return into
 * eax
 */
unsigned int f0(unsigned int a){
	return 2*a;
}

/**
 * Return into
 * rax 
 */
unsigned long f1(unsigned long a){
	return 2*a;
}

unsigned short f2(unsigned short a){
	return (short)(2*a);
}

void fp0(int *a){
	*a=2*(*a);
}

void fp1(long *a){
	*a=2*(*a);
}

int main(){
	printf("Hello f0: %d\n",f0(1));
	printf("Hello f1: %ld\n",f1(2));
	printf("Hello f2: %d\n",f2(2));

	int*  ip = malloc(sizeof(int));
	long* lp = malloc(sizeof(long));

	*ip=12;
	*lp=21;

	printf("IPointer:\t %p, %d\n",ip, *ip);
	printf("LPointer:\t %p, %ld\n",lp, *lp);

	fp0(ip);
	fp1(lp);

	printf("IPointer:\t %p, %d\n",ip, *ip);
	printf("LPointer:\t %p, %ld\n",lp, *lp);

	fp0(ip);
	fp1(lp);

	free(ip);
	free(lp);
}