GNU libmatheval

For thirty years, the Free Software Foundation has been seen as a guiding light for the free software movement, fighting for user freedom.

Help keep our light burning brightly by donating to push us towards our goal of raising $450,000 by January 31st.

$450k

314k so far

Introduction

GNU libmatheval is a library (callable from C and Fortran) to parse and evaluate symbolic expressions input as text. It supports expressions in any number of variables of arbitrary names, decimal and symbolic constants, basic unary and binary operators, and elementary mathematical functions. In addition to parsing and evaluation, libmatheval can also compute symbolic derivatives and output expressions to strings.

Downloading

GNU libmatheval can be found on http://ftp.gnu.org/gnu/libmatheval/ (via HTTP) and ftp://ftp.gnu.org/gnu/libmatheval/ (via FTP). It can also be found on one of GNU FTP mirrors.

GNU libmatheval development sources from Mercurial repository are available for browsing through corresponding Savannah Web interface. Sources could be also fetched from repository by Mercurial command:

hg clone http://hg.sv.gnu.org/hgweb/libmatheval/

For other ways to obtain GNU libmatheval, please see How to get GNU Software.

Documentation

The GNU libmatheval manual is available online in a number of formats.

Further information

The GNU libmatheval Savannah page has some additional information about GNU libmatheval.

GNU libmatheval bug reports and fixes, as well as improvement suggestions, should be directed to bug-libmatheval mailing list.

GNU project incorporates some other libraries related to mathematical calculations. Most notable of these is GNU Scientific Library.

“Our mission is to preserve, protect and promote the freedom to use, study, copy, modify, and redistribute computer software, and to defend the rights of Free Software users.”

The Free Software Foundation is the principal organizational sponsor of the GNU Operating System. Support GNU and the FSF by buying manuals and gear, joining the FSF as an associate member, or making a donation, either directly to the FSF or via Flattr.