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Authors of MPFR (in chronological order of initial contribution): Guillaume Hanrot Main author Fabrice Rouillier Original version of mul_ui.c, gmp_op.c Paul Zimmermann Main author Sylvie Boldo Original version of agm.c and log.c Jean-Luc Rémy Original version of zeta.c Emmanuel Jeandel Original version of exp3.c, const_pi.c, sincos.c Mathieu Dutour acos.c, asin.c, atan.c and early gamma.c Vincent Lefèvre Main author David Daney Hyperbolic and inverse hyperbolic functions, base-2 and base-10 exponential and logarithm, factorial Alain Delplanque Rewritten get_str.c Ludovic Meunier Error function (erf.c) Patrick Pélissier Main author Laurent Fousse Original version of sum.c Damien Stehlé Function mpfr_get_ld_2exp Philippe Théveny Main author Sylvain Chevillard Original version of ai.c The main 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 .