I am trying to implement the “fast inverse square root” algorithm in Julia: function rsqrt(x::Float32) xₛ = x int32 = reinterpret(UInt32, xₛ) int32 = 0x5f3759df - int32 >> 1 xₛ = reinterpret(Float32, int32) xₛ *= 1.5f0 - x * 0.5f0 * xₛ^2 return xₛ end But the result is defi…

How to convert the binary form of a float to an integer, and vice versa?

Topic		Replies	Views
Disabling DomainError (in sqrt())? General Usage error , math , inbounds	21	1906	October 17, 2022
Should Julia have rsqrt? And e.g. support RSQRTSS Internals & Design	12	1079	February 20, 2025
A faster pow(x,1/12) function available in Fast12thRoot.jl Numerics	12	2545	June 3, 2019
Why are calls to this function slow, compared to Python+Numpy? General Usage fast-math	14	2168	August 13, 2017
DoubleFloats.jl -> Double128 \| Quad64? Numerics	54	4793	December 14, 2020