as.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 15 行

#define S 31
#define A 17

foo (a)
     unsigned a;
{
  return (a >> S) & ((1 << A) - 1);
}

main ()
{
  printf ("%d%d\n", foo (-1), foo (0));
}