mpfr: Multiple-precision floating-point computations with correct rounding

Description

The MPFR library is a C library for multiple-precision floating-point computations with correct rounding. MPFR has continuously been supported by the INRIA and the current main authors come from the Caramba and AriC project-teams at Loria (Nancy, France) and LIP (Lyon, France) respectively; see more on the credit page. MPFR is based on the GMP multiple-precision library.

The main goal of MPFR is to provide a library for multiple-precision floating-point computation which is both efficient and has a well-defined semantics. It copies the good ideas from the ANSI/IEEE-754 standard for double-precision floating-point arithmetic (53-bit significand).

License

MPFR is free. It is distributed under the GNU Lesser General Public License (GNU Lesser GPL), version 3 or later (2.1 or later for MPFR versions until 2.4.x). The library has been registered in France by the Agence de Protection des Programmes under the number IDDN FR 001 120020 00 R P 2000 000 10800, on 15 March 2000. This license guarantees your freedom to share and change MPFR, to make sure MPFR is free for all its users. Unlike the ordinary General Public License, the Lesser GPL enables developers of non-free programs to use MPFR in their programs. If you have written a new function for MPFR or improved an existing one, please share your work!

Upstream Contact

The MPFR website is located at http://mpfr.org/

The MPFR team can be contacted via the MPFR mailing list: mpfr@loria.fr

Dependencies

  • GMP/MPIR

  • GNU patch

Special Update/Build Instructions

  • Make sure MPFR’s settings of CC and CFLAGS still get properly extracted, currently from its config.log in the src/ directory.

  • We should remove the configure option --disable-thread-safe in case the issues without that have meanwhile been fixed. (Then we should actually pass --enable-thread-safe.)

TODO

  • --disable-thread-safe should be switched to --enable-thread-safe, need to check that this works on the buildbot machines

Type

standard

Version Information

package-version.txt:

4.0.1.p0

Equivalent System Packages

conda:

$ conda install mpfr

cygwin:

$ apt-cyg install libmpfr-devel

Debian/Ubuntu:

$ sudo apt-get install  libmpfr-dev

Fedora/Redhat/CentOS:

$ sudo yum install  mpfr-devel

freebsd:

$ sudo pkg install math/mpfr

gentoo:

$ sudo emerge dev-libs/mpfr

homebrew:

$ brew install mpfr

opensuse:

$ sudo zypper install "pkgconfig(mpfr)"

slackware:

$ sudo slackpkg install mpfr

void:

$ sudo xbps-install  mpfr-devel

See https://repology.org/project/mpfr/versions

If the system package is installed, ./configure will check whether it can be used.