Fast inverse square-root hack with magic constant 0x5f3759df (2012)

Posted by shreyassaxena on Friday March 27, 2015 @02:49PM
from the h14s.p5r.org dept.

( 5 comments | 46 points | on HN )

Re:Fast inverse square-root hack with magic constant 0x5f375... by sz4kerto on Friday March 27, 2015 @05:35PM (#9279173)

[ Parent | on HN ]

Re:Fast inverse square-root hack with magic constant 0x5f375... by striking on Friday March 27, 2015 @06:00PM (#9279310)

I find it wonderful that the first mention of the constant on HN was in a username rather than in the title of a post.

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Re:Fast inverse square-root hack with magic constant 0x5f375... by dsp1234 on Friday March 27, 2015 @06:43PM (#9279526)

The first mention on the entire site appears to actually be in this comment from 7 years ago.

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Re:Fast inverse square-root hack with magic constant 0x5f375... by Demiurge on Friday March 27, 2015 @06:35PM (#9279494)

This is awesome, but I wish I had a penny for every time this gets posted :)

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Re:Fast inverse square-root hack with magic constant 0x5f375... by fsloth on Friday March 27, 2015 @06:48PM (#9279550)

Thank lord this was actually a meaningfull explanation. The "magic constant" meme gave me always a headache. Kudos!

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