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代言2016-11-11 13:24:01
好吧,应该是这段,2011最佳代码Scala版
def believe(x: Any) = x match { case b: Boolean => "I believe." case _ => "It's miracle!" }
代言2016-11-11 13:23:34
最神奇的代码莫过于 Quake III 中不可思议的求解平方根实现方法,尤其是神奇的常量0x5f3759df
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; }