681357 - Fast math functions accessible with Javascript

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Victor Porof [:vporof][:vp]]

It may be a good idea to implement fast (low precision) math functions in the platform and make them accessible via Javascript. This would be of great use in WebGL environments where performance is critical, but also in many other scenarios.
An example of a fast math function is the "fast inverse square root", very popular from games like Quake 3. Other suggestions include: fast square root, sin, log2, pow2 and binomial coefficient (each of those being highly used in various 3D and 2D drawing algorithms).

Comment 1

[Rob Campbell [:rc] (:robcee)]

fast inverse square root:

http://stackoverflow.com/questions/1349542/john-carmacks-unusual-fast-inverse-square-root-quake-iii

Comment 2

[André Bargull [:anba]]

New features to JavaScript should now be proposed to TC39 [1] before being implemented in SpiderMonkey, therefore closing as Invalid.

[1] https://github.com/tc39/proposals/blob/master/CONTRIBUTING.md