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author | 20001LastOrder <boqi.chen@mail.mcgill.ca> | 2020-11-04 01:16:22 -0500 |
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committer | 20001LastOrder <boqi.chen@mail.mcgill.ca> | 2020-11-04 01:16:22 -0500 |
commit | 93243cb3faf1ccd733081fcf380559ac03c9ad35 (patch) | |
tree | 421f9f174eb77c387b5acaa05f01e64a62cab3a7 /Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java | |
parent | add realistic solver (diff) | |
parent | Optimizing generator with linear objective functions (diff) | |
download | VIATRA-Generator-93243cb3faf1ccd733081fcf380559ac03c9ad35.tar.gz VIATRA-Generator-93243cb3faf1ccd733081fcf380559ac03c9ad35.tar.zst VIATRA-Generator-93243cb3faf1ccd733081fcf380559ac03c9ad35.zip |
merge with current master, comment numerical solver related logging
Diffstat (limited to 'Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java')
-rw-r--r-- | Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java new file mode 100644 index 00000000..b1bd9349 --- /dev/null +++ b/Solvers/VIATRA-Solver/org.eclipse.viatra.dse/src/org/eclipse/viatra/dse/objectives/Comparators.java | |||
@@ -0,0 +1,31 @@ | |||
1 | /******************************************************************************* | ||
2 | * Copyright (c) 2010-2015, Andras Szabolcs Nagy, Abel Hegedus, Akos Horvath, Zoltan Ujhelyi and Daniel Varro | ||
3 | * This program and the accompanying materials are made available under the | ||
4 | * terms of the Eclipse Public License v. 2.0 which is available at | ||
5 | * http://www.eclipse.org/legal/epl-v20.html. | ||
6 | * | ||
7 | * SPDX-License-Identifier: EPL-2.0 | ||
8 | *******************************************************************************/ | ||
9 | package org.eclipse.viatra.dse.objectives; | ||
10 | |||
11 | import java.util.Comparator; | ||
12 | |||
13 | /** | ||
14 | * This helper class holds comparators for objective implementations. | ||
15 | * | ||
16 | * @author Andras Szabolcs Nagy | ||
17 | * | ||
18 | */ | ||
19 | public class Comparators { | ||
20 | |||
21 | private Comparators() { /*Utility class constructor*/ } | ||
22 | |||
23 | public static final Comparator<Double> HIGHER_IS_BETTER = (o1, o2) -> o1.compareTo(o2); | ||
24 | |||
25 | public static final Comparator<Double> LOWER_IS_BETTER = (o1, o2) -> o2.compareTo(o1); | ||
26 | |||
27 | private static final Double ZERO = Double.valueOf(0); | ||
28 | |||
29 | public static final Comparator<Double> DIFFERENCE_TO_ZERO_IS_BETTER = (o1, o2) -> ZERO.compareTo(Math.abs(o1)-Math.abs(o2)); | ||
30 | |||
31 | } | ||