[FRIAM] Q_rsqrt() vs 1/sqrt()

[uǝlƃ ↙↙↙]

https://en.wikipedia.org/wiki/Fast_inverse_square_root

So, why is Q_rsqrt() *slower* than 1/sqrt()?

1/sqrt() took 0.294771 s
Q_rsqrt() took 0.51579 s

-- 
↙↙↙ uǝlƃ
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