.class {border:1px solid gold;} /*我可怜这个傻瓜*/

从《雷神之锤III》的资料中，我在一些随机的帖子中偶然发现了这一点。该文件的完整源代码可以在这里找到。这是一种非常快速的求平方根倒数的方法。至于最好的评论呢?当然，这是一种常见的方法，但考虑到它附着在直线上，它的神奇之处在于它的伟大之处。

float Q_rsqrt( float number )
{
  long i;
  float x2, y;
  const float threehalfs = 1.5F;

  x2 = number * 0.5F;
  y  = number;
  i  = * ( long * ) &y;  // evil floating point bit level hacking
  i  = 0x5f3759df - ( i >> 1 ); // what the fuck?
  y  = * ( float * ) &i;
  y  = y * ( threehalfs - ( x2 * y * y ) ); // 1st iteration
  // y  = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed

  #ifndef Q3_VM
  #ifdef __linux__
    assert( !isnan(y) ); // bk010122 - FPE?
  #endif
  #endif
  return y;
}

在drivers/net/sunhme.c (Linux内核)中:

/* Welcome to Sun Microsystems, can I take your order please? */
if(!hp->happy_flags & HFLAG_FENABLE)
        return happy_meal_bb_write(hp, tregs, reg, value);

/* Would you like fries with that? */
hme_write32(hp, &tregs->frame,
            (FRAME_WRITE | (hp->paddr << 23) |
             ((reg & 0xff) << 18) | (value & 0xffff)));
while(!(hme_read32(hp, &tregs->frame) & 0x10000) && --tries)
        udelay(20);

/* Anything else? */
if(!tries)
        printk(KERN_ERR "happy meal: Aieee, transceiver MIF write bolixed\n");

/* Fifty-two cents is your change, have a nice day. */

// Catching exceptions is for communists

来自Mike Duncan在SQLite上的页面。

catch (Domain.ConcurrencyException)
{
    // somebody changed it between the time we loaded it and now.
    // weird, huh?
}

//Mr. Compiler, please do not read this.