| /* |
| * 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.sysds.runtime.matrix.operators; |
| |
| import java.io.Serializable; |
| |
| import org.apache.sysds.common.Types.CorrectionLocationType; |
| import org.apache.sysds.runtime.functionobjects.KahanPlus; |
| import org.apache.sysds.runtime.functionobjects.KahanPlusSq; |
| import org.apache.sysds.runtime.functionobjects.Minus; |
| import org.apache.sysds.runtime.functionobjects.Or; |
| import org.apache.sysds.runtime.functionobjects.Plus; |
| import org.apache.sysds.runtime.functionobjects.ValueFunction; |
| |
| |
| public class AggregateOperator extends Operator implements Serializable |
| { |
| private static final long serialVersionUID = 8761527329665129670L; |
| |
| public final double initialValue; |
| public final BinaryOperator increOp; |
| public final CorrectionLocationType correction; |
| |
| public AggregateOperator(double initValue, ValueFunction op) { |
| this(initValue, op, CorrectionLocationType.INVALID); |
| } |
| |
| public AggregateOperator(double initValue, ValueFunction op, CorrectionLocationType correctionLocation) { |
| //as long as (v op 0)=v, then op is sparseSafe |
| super(op instanceof Plus || op instanceof KahanPlus || op instanceof KahanPlusSq |
| || op instanceof Or || op instanceof Minus); |
| initialValue = initValue; |
| increOp = new BinaryOperator(op); |
| correction = correctionLocation; |
| } |
| |
| public boolean existsCorrection() { |
| return (correction != CorrectionLocationType.NONE |
| && correction != CorrectionLocationType.INVALID) |
| || increOp.fn.requiresCorrection(); |
| } |
| } |