ruby-mpfr

= ruby-mpfr

• https://github.com/ytaka/ruby-mpfr/
• http://rubygems.org/gems/ruby-mpfr/

== Description:

ruby-mpfr is a library to use MPFR[http://www.mpfr.org/] which is a C library for multiple-precision floating-point computations. ruby-mpfr also includes Matrix class of MPFR; MPFR::Matrix, MPFR::SquareMatrix, MPFR::ColumnVector, and MPFR::RowVector.

• History[link:History_txt.html]
• {Examples of Usage}[link:Example_rdoc.html]

== Notice:

• Many methods have not been tested sufficiently.
• Documentation is not complete.

== Requirements:

• Ruby[http://www.ruby-lang.org/] 1.9.1 or later
• MPFR[http://www.mpfr.org/] 3.0.0 or later

For Ubuntu 10.10, we can install MPFR with the following command. $ sudo apt-get install libmpfr-dev

Note that ruby-mpfr does not work on MPFR 2. So, we need to upgrade MPFR to version 3.

== Install: The package of rubygems of ruby-mpfr is provided. You can install ruby-mpfr with the following command in the system satisfying the above requirements.

$ gem install ruby-mpfr

== Related Software: These two gem packages uses ruby-mpfr.

• ruby-mpc[http://rubygems.org/gems/ruby-mpc/]: the arithmetic of complex numbers with multiprecision
• ruby-mpfi[http://rubygems.org/gems/ruby-mpfi/]: the interval arithmetic with multiprecision

The following is an another multiple precision library which uses GMP.

• http://rubygems.org/gems/gmp

== License:

ruby-mpfr Copyright (C) 2009 Takayuki YAMAGUCHI

This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.