CVSROOT: /cvs/ppl Module name: ppl Changes by: ericci@cs.unipr.it 2001-10-15 15:20:21

Modified files: src : Polyhedron.cc

Log message: In the constructors of a polyhedron that use a system of constraints or a set of generators these matrices must be at least two columns. In the function remove_dimensions(..) if the matrix of generators does not have at least two columns (i.e num_columns() <= 1) the polyhedron becomes zero-dimensional and so we clear the `con_sys' and `gen_sys'. In function insert(const Constraint& c) if the polyhedron is zero-dimensional we add also the positivity constraint. In functions insert(...) it is no longer necessary clear `con_sys' and `gen_sys' before adding a row if the polyhedron is zero-dimensional. In function OK(), we verify if in a zero-dimensional polyhedron `con_sys' and `gen_sys' have no rows.

Patches: http://www.cs.unipr.it/cgi-bin/cvsweb.cgi/ppl/src/Polyhedron.cc.diff?cvsroot...