Add trig functions and constants

[j6k4m8]

This fixes #395 and #394!

[codecov]

Codecov Report

Merging #398 (3230454) into main (81301b2) will increase coverage by 0.27%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #398      +/-   ##
==========================================
+ Coverage   88.31%   88.58%   +0.27%     
==========================================
  Files         107      107              
  Lines        6238     6238              
==========================================
+ Hits         5509     5526      +17     
+ Misses        729      712      -17     

Impacted Files	Coverage Δ
tensorly/__init__.py	100.00% <ø> (ø)
tensorly/decomposition/_cp.py	88.72% <0.00%> (+1.09%)	⬆️
tensorly/tenalg/proximal.py	70.99% <0.00%> (+3.30%)	⬆️

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[cohenjer]

Looks good to me, thanks for adding these !
There seems to be a few issues however with some backends, thanks @caglayantuna for pointing this out.

[j6k4m8]

Indeed — it doesn't appear that the issues are with this new PR code, but I'm happy to wait to merge this as the other issues work out, if you prefer (and I will see if I can figure out an easy fix for any of them!)

Deep links to test failure lines:

• mxnet test_pad_tt_rank
• jax ops.index possibly fixed in JAX backend - v > 0.3.0 #397 ?

Looks like there might be an import issue with tensorflow, working on that now!

[JeanKossaifi]

it doesn't appear that the issues are with this new PR code

Yes, I'm fixing the JAX issue in the PR you mentioned and MXNet issue should be fixed whenever they switch to 2.0, we should use the nightly build until then.

[j6k4m8]

Awesome! In that case, I think this PR is ready for final code review and merging (i.e., all issues with the actual trig functions and constants are ironed out, I believe)

[JeanKossaifi]

Looks good to me, thanks @j6k4m8, merging!