[PATCH 0/2] MR740: Implement hyperbolic trigonometry operations.

[Petrichor Park (＠petrathekat)]

I'm working on adding all the intrinsics we haven't implemented yet. Here's sinh, cosh, and tanh.

Sinh/cosh are implemented in the same commit because they forward to the same backing function (because the identities used only differ by a plus or minus).