The MPFR library was developed by the PolKA project at INRIA Lorraine and LORIA. Authors and contributors are: Sylvie Boldo wrote the agm and log routines Guillaume Hanrot wrote part of the library Emmanuel Jeandel wrote the hypergeometric code Thom Mulders contributed the short multiplication code Fabrice Rouillier helped a lot for testing and porting Jean-Luc Re'my wrote the Zeta function Paul Zimmermann wrote part of the library All the authors are included in the MPFR mailing-list . This is the preferred way to contact us. For further information, please look at the MPFR web page .