Boris Zbarsky bzbarsky at
Thu Jun 22 18:14:49 UTC 2017

On 6/22/17 2:02 PM, Robert Poor wrote:
> However, most implementations for cos(theta) actually generate
> sin(theta) as a "byproduct" (and vice-versa).

At first glance, the v8 implementation of cos typically uses a Taylor 
series and does not compute sin.

And the SpiderMonkey implementation of cos looks like it just calls the 
C standard library cos, so also doesn't compute sin(theta) in a way 
visible to it.


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