[CppAD] Error Function

[Peter Caspers]

Hi,

is there any chance to add an error function to CppAD which is more
accurate than the existing one

http://www.coin-or.org/CppAD/Doc/erf.xml

In general, is it difficult to add functions to the library, i.e.
could I do it myself ? Is there any documentation on how to do that ?

Thanks a lot
Peter