mysteriouspants

 ________      ________       ____        _ _            
|  ____\ \    / /  ____|     / __ \      | (_)           
| |__   \ \  / /| |__ ______| |  | |_ __ | |_ _ __   ___ 
|  __|   \ \/ / |  __|______| |  | | '_ \| | | '_ \ / _ \
| |____   \  /  | |____     | |__| | | | | | | | | |  __/
|______|   \/   |______|     \____/|_| |_|_|_|_| |_|\___|

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| |  | |                           

mysteriouspants

#include <stdio.h>
#include <math.h>
/*
** float q_rsqrt( float number )
*/
float Q_rsqrt( float number ) {
    long i;
    float x2, y;
    const float threehalfs = 1.5F;