feat: add hyperbolic functions

[thisisnic]

This PR adds hyperbolic functions

[jvanstraten]

Uh, hm. I guess I didn't catch this in #241, but it should be fp32 -> fp32 and fp64 -> fp64. Unless you're building huge lookup tables (which may or may not be feasible for fp32, not so much for fp64) I see zero reason to have an fp32 -> fp64 variant from a computational perspective, and it goes against #251. Can you change the new functions to fp32 -> fp32? I'll submit a patch to weed out inconsistencies between all the new functions in general (and at some point to codify #251, since there have been no objections) later.

[thisisnic]

Uh, hm. I guess I didn't catch this in #241, but it should be fp32 -> fp32 and fp64 -> fp64. Unless you're building huge lookup tables (which may or may not be feasible for fp32, not so much for fp64) I see zero reason to have an fp32 -> fp64 variant from a computational perspective, and it goes against #251. Can you change the new functions to fp32 -> fp32? I'll submit a patch to weed out inconsistencies between all the new functions in general (and at some point to codify #251, since there have been no objections) later.

Good catch, I've updated them in this PR now!

[jvanstraten]

Thanks, LGTM now.