org.apache.lucene.queries.function.valuesource.PowFloatFunction Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.lucene.queries.function.valuesource;
import java.io.IOException;
import org.apache.lucene.queries.function.FunctionValues;
import org.apache.lucene.queries.function.ValueSource;
/** Function to raise the base "a" to the power "b" */
public class PowFloatFunction extends DualFloatFunction {
/**
* @param a the base.
* @param b the exponent.
*/
public PowFloatFunction(ValueSource a, ValueSource b) {
super(a, b);
}
@Override
protected String name() {
return "pow";
}
@Override
protected float func(int doc, FunctionValues aVals, FunctionValues bVals) throws IOException {
return (float) Math.pow(aVals.floatVal(doc), bVals.floatVal(doc));
}
}