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Fast inverse square root - Wikipedia

快速平方根倒数算法用魔术常数加一次牛顿迭代估算 1/√x,因 Quake III 的实装而闻名。

资源信息

域名
en.wikipedia.org
内容类型
文章(article)
主题
立场
引用(reference)
提及
3 次提及,3 位提及者
合集
经典(classic)
提及年份
2022
综合推荐分
5.8

推荐理由

Contrasts the seed formula with the legendary fast inverse square root as a different kind of hack.

HN 评论原话

“I'm pretty sure this isn't the same kind of thing as Carmack's (edit: not Carmack's) legendary inverse square root function [1], which has that 0x5F3759DF constant”

— humanistbot · 查看 HN 原评论(在新标签页打开)

网页原文证据

The algorithm is best known for its implementation in the 1999 video game Quake III Arena.

网页抓取状态

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