Signatures for vectorised binary functions

[andrjohns]

Opening this as a reference issue for the addition of vectorised binary functions.

The following functions will be vectorised, and will need signatures added (I'll be doing both):

• bessel_first_kind
• bessel_second_kind
• beta
• binary_log_loss
• binomial_coefficient_log
• choose
• falling_factorial
• fdim
• fmax
• fmin
• fmod
• gamma_p
• gamma_q
• hypot
• lbeta
• ldexp
• lmgamma
• log_diff_exp
• log_falling_factorial
• log_inv_logit_diff
• log_modified_bessel_first_kind
• log_rising_factorial
• modified_bessel_first_kind
• modified_bessel_second_kind
• multiply_log
• owens_t
• pow
• rising_factorial

I think that's all of them, but let me know if I've missed any

[bob-carpenter]

Thanks! We've been trying to do this for the binary functions for years now.

[rok-cesnovar]

@andrjohns this can now be closed right?

[andrjohns]

Woohoo, that's the lot! Safe to close, I'll start working on the documentation now