com.epam.deltix.util.lang.ExponentialGrowthPolicy Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2021 EPAM Systems, Inc
 *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. Licensed under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.epam.deltix.util.lang;

/**
 *
 */
public class ExponentialGrowthPolicy implements GrowthPolicy {
    public double   factor;
    public long     minIncrement;
    
    public ExponentialGrowthPolicy () {
        this (1.5);
    }
    
    public ExponentialGrowthPolicy (double factor) {
        if (factor <= 1)
            throw new IllegalArgumentException ("Illegal factor: " + factor);
        
        this.factor = factor;
    }
        
    public long     computeLength (long curLength, long minLength) {
        return (Math.max (minLength, (long) (curLength * factor)));
    }

}