http://groups.google.com/group/zhyang Yang Zhang's Group Google Group Personal Group 2006-12-05T19:17:09Z Google Groups Ang zhangyang...@gmail.com 2006-12-05T19:17:09Z http://groups.google.com/group/zhyang/browse_frm/thread/65ed4a557f6474c6/a253a95fdeca33cd?show_docid=a253a95fdeca33cd Origin of Quake3's Fast InvSqrt() float InvSqrt(float x){ <br> float xhalf=0.5f*x; <br> long i=*(long*)&amp;x; <br> i=0x5f3759df - (i&gt;&gt;1); <br> x=*(float *)&amp;i; <br> x=x*(1.5f-xhalf*x*x); <br> return x; zhangyang...@gmail.com 2006-10-31T07:37:49Z http://groups.google.com/group/zhyang/browse_frm/thread/b614b83b72375fc2/1c652adee2b26cf3?show_docid=1c652adee2b26cf3 Why do computer programmers think halloween and christmas are the same day? oct31=dec25 :) <br> There are 10 kinds of people in the world, those who know binaries and <br> those who don't. zhangyang...@gmail.com 2006-10-31T07:36:45Z http://groups.google.com/group/zhyang/browse_frm/thread/8112e813f7c823a7/ecd5b6a09c8331d5?show_docid=ecd5b6a09c8331d5 MIT blog host MIT also hosts a blog website. <a target="_blank" rel=nofollow href="http://blogs.mit.edu/">[link]</a> <br> To move, or not to move?