Function Parser for C++ v3.3.2

Download

Download fparser3.3.2.zip v3.3.2 (released 13 Oct 2009)

(Older versions: v3.2.1, v3.1.5, v3.0.3, v2.84, v2.8, v2.71, v2.63, v2.51, v2.4, v2.3, v2.22)

Development version

The basic library package above contains the bare minimum files intended for the usage of the library in C++ applications. If you want to simply use the library in your program, then download the package above.

The development version of the library is intended for those who want to modify and enhance the library. Besides the files contained in the basic package above, the development version contains the full optimizer sources, optimizer rule generation tools, an extensive automatic regression testbed, a Makefile and other tools.

Download the development package: fparser3.3.2_devel.tar.bz2

What's new?

What's new in v3.3.2

• Fixed an incompatibility with MS Visual Studio which caused the optimizer to enter an infinite loop with some input functions (VS interprets bitfields slightly differently from gcc). Also minor additions and fine-tuning of the optimizer.

What's new in v3.3.1

• Fixed some incompatibilities with MS Visual Studio introduced with the refactored optimizer.

What's new in v3.3

• The Parse() method now performs more exhaustive constant folding (calculating constant expressions at parse time) than before. Also integral powers (eg. like "x^4") are now more optimized at parse time, resulting in faster evaluation even without a call to the Optimize() method (although the latter will sometimes still result in an even better result). The speed impact of this on the Parse() method has been kept minimal.
• More refactoring of the optimizer, making the Optimize() method significantly faster than in the previous version. Also new and more exhaustive rules have been added, resulting in better results in certain cases (eg. when using basic operators in very complex functions).
• Added utility member functions to parse a function so that the variables in the function are deduced automatically. The found variables are returned to the caller if requested.

You can also view the full version history.

Speed tests

Some software which uses this library

Function Viewer: A small program I made to demonstrate the function parser.

• QCad: A GPL CAD software for various platforms.
• Fung-Calc: A GPL graphing calculator for both 2D and 3D graphs.
• Scribus - Open Source Desktop Publishing

- What is this library?

HTML documentation (including usage license and copyright notices)

Simple example program