error function erf(z) with complex z

[Thomas Weber <weber@num.uni-sb.de>]

Hi, 

I need to calculate erf(z) for complex variables z. Is there any library
in Debian that lets me do this (preferably C)? According to the man page
of cerf(3), it should go into glibc, but it doesn't seem to be there
right now.

Regards
	Thomas