인형안테뭇은오댕국물지웆

인형안테뭇은오댕국물지우기

간만에 웃었다.

float sqrt3(const float& n)                                                                       

{                                                                                                 

    //https://www.gamedev.net/forums/topic/704525-3-quick-ways-to-calculate-the-square-root-in-c/ 

    if (n == 0)                                                                                   

        return 0.0f;                                                                              

    static union { int i; float f; } u;                                                           

    u.i = 0x2035AD0C + (*(int*)&n >> 1);                                                          

    return n / u.f + u.f * 0.25f;                                                                 

}                                                                                                 

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