distributed config && float library

packages/gecode/disjunctor2.yap

@@ -0,0 +1,37 @@
+%% -*- prolog -*-
+%%=============================================================================
+%% Copyright (C) 2011 by Denys Duchier
+%%
+%% This program is free software: you can redistribute it and/or modify it
+%% under the terms of the GNU Lesser General Public License as published by the
+%% Free Software Foundation, either version 3 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 Lesser General Public License
+%% along with this program.  If not, see <http://www.gnu.org/licenses/>.
+%%=============================================================================
+
+:- use_module(library(gecode)).
+
+disjunctor2(X_,Y_) :-
+	Space := space,
+	[X,Y] := intvars(Space,2,0,3),
+	D := disjunctor(Space),
+	C1 := clause(D),
+	[X1,Y1] := intvars(C1,2,0,3),
+	C1 += forward([X,Y],[X1,Y1]),
+	C1 += rel(X1,'IRT_EQ',0),
+	C1 += rel(Y1,'IRT_EQ',0),
+	C2 := clause(D),
+	[X2,Y2] := intvars(C2,2,0,3),
+	C2 += forward([X,Y],[X2,Y2]),
+	Z2 := intvar(C2,1,2),
+	C2 += linear([-1,1,1],[X2,Y2,Z2],'IRT_EQ',0),
+	Space += branch([X,Y],'INT_VAR_SIZE_MIN','INT_VAL_MIN'),
+	SolSpace := search(Space),
+	[X_,Y_] := val(SolSpace,[X,Y]).