#include <stdio.h>
/* This function will print the values in hex format */
void conversion(long long int num)
{
unsigned int a, b;
printf("input: %016llx\n", (long long int) num);
a = ((unsigned int *) &num)[0];
b = ((unsigned int *) &num)[1];
printf("unpacked: %08x %08x\n", b, a);
((unsigned int *) &num)[0] = a;
((unsigned int *) &num)[1] = b;
printf("repacked: %016llx\n\n", (long long int) num);
}
int main()
{
unsigned int num = 5;
long long int masked = 0;
unsigned int unmasked = 0;
/* Packing */
masked = ((long long int)num) << 32;
printf("Masked to long long int %lld\n", masked);
/* Unpacking */
unmasked = (masked & 0xFFFFFFFF00000000) >> 32;
printf("UnMasked to long long int %d\n", unmasked);
conversion(masked);
return 0;
}
