PPL

The Parma Polyhedra Library (PPL) provides numerical abstractions especially targeted at applications in the field of analysis and verification of complex systems. These abstractions include convex polyhedra, defined as the intersection of a finite number of (open or closed) halfspaces, each described by a linear inequality (strict or non-strict) with rational coefficients; some special classes of polyhedra shapes that offer interesting complexity/precision tradeoffs; and grids which represent regularly spaced points that satisfy a set of linear congruence relations. The library also supports finite powersets and products of (any kind of) polyhedra and grids, a mixed integer linear programming problem solver using an exact-arithmetic version of the simplex algorithm, a parametric integer programming solver, and primitives for termination analysis via the automatic synthesis of linear ranking functions. More details are available on the PPL's internal mechanisms.)

The Parma Polyhedra Library is: user friendly (you write x + 2*y + 5*z <= 7 when you mean it); fully dynamic (available virtual memory is the only limitation to the dimension of anything); portable (written in standard C++, with C, Java, Objective CAML and Prolog interfaces, and following all the applicable standards); exception-safe (never leaks resources or leaves invalid object fragments around); efficient (and we hope to make it even more so); thoroughly documented; free software (distributed under the terms of the GNU General Public License version 3 or any later version).

News

Nov 04, 2011 The PPL has a new logo and web site
Thanks to BUGSENG, the Parma Polyhedra Library has a new logo and a completely renovated web site. If you are reading this, you have discovered that the new URI for the PPL is http://bugseng.com/products/ppl.
Feb 27, 2011 PPL 0.11.2 has been released
This release fixes a few minor bugs of PPL 0.11.1. See the release notes for more information.
Feb 20, 2011 PPL 0.11.1 has been released
This release includes several important bug fixes and performance improvements. See the release notes for more information.
For older news items, see the complete news archive.

Impatient?

You can browse the code or browse the latest hyperlinked user's manual both in HTML format and in PDF. You can also jump straight to the latest version's download area. Visiting the rest of this site will give you access to more information, more documentation and more download options.

Developer's jump station: Tinderbox panel for PPL-HEAD; Tinderbox index; Gitweb; Reference manual.