float CarmSqrt(float x){ union{ int intPart; float floatPart; } convertor; union{ int intPart; float floatPart; } convertor2; convertor.floatPart = x; convertor2.floatPart = x; convertor.intPart = 0x1FBCF800 + (convertor.intPart >> 1); convertor2.intPart = 0x5f3759df - (convertor2.intPart >> 1); return 0.5f*(convertor.floatPart + (x * convertor2.floatPart)); }
[课程]Linux pwn 探索篇！
