#include <stdio.h>

struct real_value 
{
  unsigned int cls  : 2;
  unsigned int sign : 1;
};

struct real_value r = { 0, 1 };

int
main()
{
        unsigned long image;

        image = (r.sign << 31);

        printf ("Image: 0x%08lx\n", image);
        return (0);
}