math module bug

[Matthias Lang]

 > > From: Richard A. O'Keefe
 > > >Why not provide default implementations of the missing functions?
 > > >Link them after libm, and you get the libm versions if they exist
 > > >or the default ones if they don't.

The linux manpage suggests that erf and erfc are required by C99. So
does http://www.schweikhardt.net/identifiers.html

Are erf and erfc missing from all windows variants or just some?

(gcc isn't perfect either: http://gcc.gnu.org/gcc-4.0/c99status.html)

Matt