[PPL-devel] ppl/src Polyhedron.cc

[Elisa Ricci]

CVSROOT:	/cvs/ppl
Module name:	ppl
Changes by:	ericci at 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=ppl&r1=1.4&r2=1.5