#  Copyright (c) 1997-2021
#  Ewgenij Gawrilow, Michael Joswig, and the polymake team
#  Technische Universität Berlin, Germany
#  https://polymake.org
#
#  This program is free software; you can redistribute it and/or modify it
#  under the terms of the GNU General Public License as published by the
#  Free Software Foundation; either version 2, or (at your option) any
#  later version: http://www.gnu.org/licenses/gpl.txt.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#------------------------------------------------------------------------------- 


# @category Topology
# Use the smith normal form implemented in [[wiki:external_software#flint]].
label flint

object SimplicialComplex {

rule flint.homology: HOMOLOGY : FACETS {
   $this->HOMOLOGY=homology_flint($this->FACETS, 0);
}
weight 4.15;
precondition : DIM { $this->DIM>=0 }

rule flint.homology: COHOMOLOGY : FACETS {
   $this->COHOMOLOGY=homology_flint($this->FACETS, 1);
}
weight 4.15;
precondition : DIM { $this->DIM>=0 }

}
