stan-dev/stan — pull request #555 by randommm (2014-02-13 02:43:02+00:00)
Title: neg_binomial_log_log

Adds neg_binomial_log_log suitable for GLM regression and also neg_binomial_log_rng.

Thread in stan-dev list:
https://groups.google.com/d/topic/stan-dev/BwlOKOZ3uxg/discussion