[PATCH v2 0/1] MR321: vkd3d-shader/hlsl: Implement intrinsic tan.

[Petrichor Park (＠petrathekat)]

Now that we can write HLSL intrinsics in HLSL, cleaning up missing
functions becomes much easier.

This commit also extends the trigonometry tests a little bit to make
sure that tan works right.

--
  v2: vkd3d-shader/hlsl: Implement intrinsic tan.
 
https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/321