rel-test.hpp

00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *     Vincent Barichard <Vincent.Barichard@univ-angers.fr>
00006  *
00007  *  Copyright:
00008  *     Christian Schulte, 2003
00009  *     Vincent Barichard, 2012
00010  *
00011  *  Last modified:
00012  *     $Date: 2013-01-24 19:28:06 +0100 (Thu, 24 Jan 2013) $ by $Author: schulte $
00013  *     $Revision: 13235 $
00014  *
00015  *  This file is part of Gecode, the generic constraint
00016  *  development environment:
00017  *     http://www.gecode.org
00018  *
00019  *  Permission is hereby granted, free of charge, to any person obtaining
00020  *  a copy of this software and associated documentation files (the
00021  *  "Software"), to deal in the Software without restriction, including
00022  *  without limitation the rights to use, copy, modify, merge, publish,
00023  *  distribute, sublicense, and/or sell copies of the Software, and to
00024  *  permit persons to whom the Software is furnished to do so, subject to
00025  *  the following conditions:
00026  *
00027  *  The above copyright notice and this permission notice shall be
00028  *  included in all copies or substantial portions of the Software.
00029  *
00030  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00031  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00032  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00033  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00034  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00035  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00036  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00037  *
00038  */
00039 
00040 namespace Gecode { namespace Float {
00041 
00042   template<class View>
00043   forceinline RelTest
00044   rtest_eq(View x, View y) {
00045     if ((x.min() > y.max()) || (x.max() < y.min())) return RT_FALSE;
00046     return (x.assigned() && y.assigned()) ? RT_TRUE : RT_MAYBE;
00047   }
00048 
00049   template<class View>
00050   forceinline RelTest
00051   rtest_eq(View x, FloatVal n) {
00052     if ((x.min() > n.max()) || (x.max() < n.min())) return RT_FALSE;
00053     return x.assigned() ? RT_TRUE : RT_MAYBE;
00054   }
00055 
00056   template<class View>
00057   forceinline RelTest
00058   rtest_lq(View x, View y) {
00059     if (x.max() <= y.min()) return RT_TRUE;
00060     if (x.min() > y.max())  return RT_FALSE;
00061     return RT_MAYBE;
00062   }
00063 
00064   template<class View>
00065   forceinline RelTest
00066   rtest_lq(View x, FloatVal n) {
00067     if (x.max() <= n.min()) return RT_TRUE;
00068     if (x.min() > n.max())  return RT_FALSE;
00069     return RT_MAYBE;
00070   }
00071 
00072   template<class View>
00073   forceinline RelTest
00074   rtest_le(View x, View y) {
00075     if (x.max() < y.min()) return RT_TRUE;
00076     if (x.min() >= y.max())  return RT_FALSE;
00077     return RT_MAYBE;
00078   }
00079 
00080   template<class View>
00081   forceinline RelTest
00082   rtest_le(View x, FloatVal n) {
00083     if (x.max() < n.min()) return RT_TRUE;
00084     if (x.min() >= n.max())  return RT_FALSE;
00085     return RT_MAYBE;
00086   }
00087 
00088 }}
00089 
00090 // STATISTICS: float-var
00091