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Section: Software
GNU MPFR
Participants : Vincent Lefèvre [correspondant] , Paul Zimmermann [Caramel, Inria Nancy - Grand Est] .
GNU MPFR is an efficient multiple-precision floating-point library with well-defined semantics (copying the good ideas from the IEEE-754 standard), in particular correct rounding in 5 rounding modes. GNU MPFR provides about 80 mathematical functions, in addition to utility functions (assignments, conversions...). Special data (Not a Number, infinities, signed zeros) are handled like in the IEEE-754 standard.
MPFR was one of the main pieces of software developed by the old SPACES team at Loria. Since late 2006, with the departure of Vincent Lefèvre to Lyon, it has become a joint project between the Caramel (formerly SPACES then CACAO) and the AriC (formerly Arénaire) project-teams. MPFR has been a GNU package since 26 January 2009.
An MPFR-MPC developers meeting took place from 25 to 27 June 2012 in Bordeaux. GNU MPFR 3.1.1 was released on 3 July 2012.
The main changes done in the AriC project-team for the future versions are tcc support, more automation for the releases, new functions to operate on groups of flags, and bug fixes.
URL: http://www.mpfr.org/
GNU MPFR is now on the Ohloh community platform for free and open source software: https://www.ohloh.net/p/gnu-mpfr
ACM: D.2.2 (Software libraries), G.1.0 (Multiple precision arithmetic), G.4 (Mathematical software).
AMS: 26-04 Real Numbers, Explicit machine computation and programs.
APP: no longer applicable (copyright transferred to the Free Software Foundation).
Type of human computer interaction: C library, callable from C or other languages via third-party interfaces.
OS/Middleware: any OS, as long as a C compiler is available.
Required library or software: GMP .
Documentation: API in texinfo format (and other formats via conversion); algorithms are also described in a separate document.