Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/util/ExpGrowth.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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3 * Administrator of the National Aeronautics and Space Administration.
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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12 * Unless required by applicable law or agreed to in writing, software
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18 package gov.nasa.jpf.util;
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19
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20 public class ExpGrowth implements Growth {
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21 final float factor;
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22 final float sqFactor;
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23 final int plus;
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24
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25 public ExpGrowth(float factor, int plus) {
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26 if (factor < 1.001F || factor > 100.F) {
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27 throw new IllegalArgumentException();
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28 }
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29 this.factor = factor;
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30 this.sqFactor = (float) Math.sqrt(factor);
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31 this.plus = plus;
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32 }
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33
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34 public ExpGrowth(float factor) {
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35 this(factor,7);
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36 }
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37
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38 @Override
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39 public int grow(int oldSize, int minNewSize) {
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40 int newSize = (int)(factor * oldSize) + plus;
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41 if (newSize < minNewSize) {
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42 newSize = (int)(sqFactor * minNewSize) + plus;
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43 }
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44 return newSize;
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45 }
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46 }