[PATCH 6/6] Remove slow paths from sin/cos

[Siddhesh Poyarekar]

On Monday 12 March 2018 11:01 PM, Wilco Dijkstra wrote:
> I had lots of issues due to parts of functions being included in sincos.c, so I had to
> disable sincos during development. The new version is much easier to maintain.

That's subjective; someone half a decade down the line might differ when
they see bits of code duplicated across files :)

> This patch on its own gives a 16-20% speedup between 0 and 8*PI (this speedup
> continues up to 2^27). The overall speedup of sincos is 48% over this range, and
> between 0 and PI it is 66% faster. So I'd say specializing the small cases in sincos
> gives a significant gain.

That's a good rationale, please include it in your commit log.

Siddhesh