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__ga_stop__.m

## Copyright (C) 2008 Luca Favatella <slackydeb@gmail.com>
##
## 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 of the License, or
## (at your option) any later version.
##
## 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.
##
## You should have received a copy of the GNU General Public License
## along with this program; If not, see <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn{Function File} {@var{stop} =} __ga_stop__ (@var{problem}, @var{state})
## Determine whether the genetic algorithm should stop.
##
## @seealso{__ga_problem__}
## @end deftypefn

## Author: Luca Favatella <slackydeb@gmail.com>
## Version: 5.1

function stop = __ga_stop__ (problem, state)
  Generations = \
      (state.Generation >= problem.options.Generations);

  TimeLimit = \
      ((time () - state.StartTime) >= problem.options.TimeLimit);

  FitnessLimit = \
      (state.Best(state.Generation + 1, 1) <= problem.options.FitnessLimit);

  stop = (Generations ||
          TimeLimit ||
          FitnessLimit);
endfunction

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