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MPFI (Multiple Precision Floating-Point Interval Library) is a library for arbitrary precision interval arithmetic with intervals represented using MPFR reliable floating-point numbers. It is based on the GNU MP library and on the MPFR library. The purpose of an arbitrary precision interval arithmetic is on the one hand to get guaranteed results, thanks to interval computation, and on the other hand to obtain accurate results, thanks to multiple precision arithmetic. The MPFI library is built upon MPFR to benefit from the correct roundings provided by MPFR, it portability, and its compliance with the IEEE 754 standard for floating-point arithmetic.


User manual available in HTML format from


version 1.3.3 (beta)
released on 17 March 2005


Related Projects


LicenseVerified byVerified onNotes
LGPLv2.1orlaterJanet Casey28 June 2005

Leaders and contributors

Nathalie Revol Maintainer

Resources and communication

Audience Resource type URI
Bug Tracking,Developer,Support E-mail

Software prerequisites

Kind Description
Required to use MPFR 2.0.1 or higher
Required to build gnump 4.0 or higher
Required to build MPFR 2.0.1 or higher
Required to use gnump 4.0 or higher

This entry (in part or in whole) was last reviewed on 7 January 2008.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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