001/*
002 * Copyright (c) 2015-2020, Oracle and/or its affiliates. All rights reserved.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.tribuo.util.infotheory.impl;
018
019/**
020 * An mutable tuple of a double and a long.
021 */
022public final class WeightCountTuple {
023
024    public double weight;
025    public long count;
026
027    public WeightCountTuple() {
028        this.weight = 0.0;
029        this.count = 0;
030    }
031
032    public WeightCountTuple(double weight, long count) {
033        this.weight = weight;
034        this.count = count;
035    }
036
037    @Override
038    public int hashCode() {
039        int hash = 3;
040        hash = 47 * hash + (int) (Double.doubleToLongBits(this.weight) ^ (Double.doubleToLongBits(this.weight) >>> 32));
041        hash = 47 * hash + (int) (this.count ^ (this.count >>> 32));
042        return hash;
043    }
044
045    @Override
046    public boolean equals(Object obj) {
047        if (obj == null) {
048            return false;
049        }
050        if (!(obj instanceof WeightCountTuple)) {
051            return false;
052        }
053        final WeightCountTuple other = (WeightCountTuple) obj;
054        return (this.weight == other.weight) && (this.count == other.count);
055    }
056    
057}