20030220-1.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 21 行

/* PR optimization/9768 */
/* Originator: Randolph Chung <[e-mail]> */

inline int fixfloor (long x)
{
  if (x >= 0)
    return (x >> 16);
  else
    return ~((~x) >> 16);
}

inline int fixtoi (long x)
{
  return fixfloor(x) + ((x & 0x8000) >> 15);
}

int foo(long x, long y)
{
  return fixtoi(x*y);
}