The Cookout

TheHarmattan said:

Very nice but the <math.h> can tweak this and the optimization would make up for the speed aspect.

View: https://youtu.be/p8u_k2LIZyo



Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5F3759DF, is an algorithm that estimates 1 x {\displaystyle {\frac {1}{\sqrt {x}}}}

, the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number x {\displaystyle x}

in IEEE 754 floating-point format. This operation is used in digital signal processing to normalize a vector, i.e., scale it to length 1. For example, computer graphics programs use inverse square roots to compute angles of incidence and reflection for lighting and shading.

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