Welcome to the
cdd and cddplus Homepage

Last update: July 12, 2018

Currently, the C-library version cddlib of cdd packages is the only one being updated, while standalone codes cdd and cddplus are still useful. To know what cdd, cddplus and cddlib are, please read
cddlib readme and cddplus readme
Manuals (html version):
cdd/cdd+ manual
cddlib manual
Get source codes:
cddlib package is available only from GitHub . The older packages (up to cddlib-094i) can be found in cdd directory
cdd package cdd-061a.tar.gz
cddplus package cdd+-077a.tar.gz (to be compled with g++ 4.1. With more recent g++, try patch). With g++ 3.1, use cdd+-077.tar.gz
To know the implementation:
``The double description revisited'' gzipped ps file
To learn the fundamental concepts of Convex Hull, Vornonoi, Delaunay, etc.:
``Polyhedral Computation FAQ'' html version or pdf file
Links to cdd/cdd+/cddlib users and more.

Illustration of Double Description Method of Motzkin et al.