Charles J. Geyer <charlie@stat.umn.edu> and
Glen D. Meeden <glen@stat.umn.edu>, incorporates code from
cddlib (ver 0.94d) written by Komei Fukuda <fukuda@ifor.math.ethz.ch>
R interface to (some of) cddlib,
see http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html
converts back and forth between two representations of a convex polytope:
as solution of a set of linear equalities and inequalities and as
convex hull of set of points and rays,
also does linear programming with exact arithmetic

Charles J. Geyer <charlie@stat.umn.edu> and
Glen D. Meeden <glen@stat.umn.edu>
R interface to (some of) cddlib,
see http://www.cs.mcgill.ca/~fukuda/soft/cdd_home/

R interface to (some of) cddlib,
see http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html
converts back and forth between two representations of a convex polytope:
as solution of a set of linear equalities and inequalities and as
convex hull of set of points and rays

Charles J. Geyer <charlie@stat.umn.edu> and
Glen D. Meeden <glen@stat.umn.edu>, incorporates code from
cddlib (ver 0.94f) written by Komei Fukuda <fukuda@ifor.math.ethz.ch>
GMP (GNU MP bignum library from http://gmplib.org/)

R interface to (some of) cddlib,
see http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html
converts back and forth between two representations of a convex polytope:
as solution of a set of linear equalities and inequalities and as
convex hull of set of points and rays,
also does linear programming and redundant generator elimination
(for example, convex hull in n dimensions), all with exact
infinite-precision rational arithmetic.

R interface to (some of) cddlib
(http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html).
Converts back and forth between two representations of a convex polytope:
as solution of a set of linear equalities and inequalities and as
convex hull of set of points and rays.
Also does linear programming and redundant generator elimination
(for example, convex hull in n dimensions).  All functions can use exact
infinite-precision rational arithmetic.