[section Known Issues, and Todo List]

[h4 tgamma]

* Can the __lanczos be optimized any further?  (low priority)

[h4 lgamma]

* Improve accuracy near 1 and 2 with either Chebyshev or rational
approximation. (High priority).

[h4 erf/erfc]

* Rewrite using either Chebyshev or rational
approximation. (High priority).

[h4 Incomplete gamma]

* Implement Temme's asymptotic expansion for large a and z,
this one is mainly an issue of performance rather than accuracy (medium priority).
* Double check behavior of the upper fraction when a is very small and z -> 1 (Medium Priority).
* Double check behavior of the upper fraction when a is very small and z -> 0 (Medium Priority).
* Double check for opportunities to chain series expansions together, passing
the result of one into the initial value of the next (Medium Priority).
* Investigate asymptotic expansions for large a small z and large z small a
(see A&S) (low priority).


[h4 Beta Function]

* No known issues?

[h4 Incomplete Beta]

* Investigate Didonato and Morris' asymptotic expansion for large a and b 
(medium priority).
* Double check for opportunities to chain series expansions together, passing
the result of one into the initial value of the next (Medium Priority).
* Investigate Didonato and Morris' asymptotic expansion for small a and b 
(low priority).

[endsect]