stan-dev/stan — pull request #939 by syclik (2014-08-27 18:30:30+00:00)
Title: Feature/issue 843 test nan phi

#### Summary:

Adds documentation for Phi.

#### Intended Effect:

Adds user documentation for Phi. The tests for NaN are already in place.

#### How to Verify:

Can build the manual and inspect the document.

#### Side Effects:

None. Doc only.

#### Documentation:

Added user documentation.

#### Reviewer Suggestions:

Anyone.