poisson_log cdfs
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feature
new function
- Dominant language
- C++
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Description
From @bob-carpenter on April 29, 2015 13:47
Requested by Henrik Mannerström on stan-users:
Add:
- poisson_log_cdf
- poisson_log_cdf_log
- poisson_log_ccdf_log
And then we can do truncations.
Copied from original issue: stan-dev/stan#1432
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the existing Poisson-related entry points and tests in the Stan Math Library, then compare their conventions with the three requested functions: poisson_log_cdf, poisson_log_cdf_log, and poisson_log_ccdf_log. Done means all three functions are implemented and covered by tests, enabling the requested truncation work.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- data
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100