On Thu, Oct 13, 2011 at 02:30:07AM +0200, Mojca Miklavec wrote:
>
> MetaPost doesn't know erf and other obscure functions

Metapost could possibly be extended to provide all of the functions
in the standard math library. In fact, it would be nice if there be
some hook to `link' to additional functions, written in C or in Fortran,
for example. (I regularly use the complex error function.)
Maybe this could be possible in luatex, made available to metapost
through some communication pipe?