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//Based on the fast inverse square root function | |
// https://en.wikipedia.org/wiki/Fast_inverse_square_root | |
// Some original comments preserved for humor value | |
// Designed to try to mimic the original as closely as possible | |
function Q_rsqrt(number) | |
{ | |
var i; | |
var x2, y; | |
const threehalfs = 1.5; | |