Section: Software

Pari/Gp

Participants : Karim Belabas [ release manager ] , Bill Allombert [ University of Montpellier ] .

http://pari.math.u-bordeaux.fr/

License: GPL 2+

Current stable version: 2.3.3, 2008

Current testing version: 2.4.2.alpha, 2007

Pari/Gp is a widely used computer algebra system designed for fast computations in number theory (factorisation, algebraic number theory, elliptic curves, ...), but it also contains a large number of other useful functions to compute with mathematical entities such as matrices, polynomials, power series, algebraic numbers, etc., and many transcendental functions.

• Pari is a C library, allowing fast computations.

• Gp is an easy-to-use interactive shell giving access to the Pari functions.

• gp2c , the GP-to-C compiler, combines the best of both worlds by compiling Gp scripts to the C language and transparently loading the resulting functions into Gp ; scripts compiled by gp2c will typically run three to four times faster.