55 lines
2.1 KiB
Java
55 lines
2.1 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record.formula.eval;
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/**
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* @author Josh Micich
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*/
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abstract class TwoOperandNumericOperation implements OperationEval {
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protected final double singleOperandEvaluate(Eval arg, int srcCellRow, short srcCellCol) throws EvaluationException {
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ValueEval ve = OperandResolver.getSingleValue(arg, srcCellRow, srcCellCol);
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return OperandResolver.coerceValueToDouble(ve);
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}
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public final ValueEval evaluate(ValueEval[] args, int srcCellRow, short srcCellCol) {
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double result;
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try {
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double d0 = singleOperandEvaluate(args[0], srcCellRow, srcCellCol);
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double d1 = singleOperandEvaluate(args[1], srcCellRow, srcCellCol);
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result = evaluate(d0, d1);
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if (result == 0.0) { // this '==' matches +0.0 and -0.0
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// Excel converts -0.0 to +0.0 for '*', '/', '%', '+' and '^'
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if (!(this instanceof SubtractEval)) {
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return NumberEval.ZERO;
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}
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}
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if (Double.isNaN(result) || Double.isInfinite(result)) {
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return ErrorEval.NUM_ERROR;
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}
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} catch (EvaluationException e) {
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return e.getErrorEval();
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}
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return new NumberEval(result);
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}
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protected abstract double evaluate(double d0, double d1) throws EvaluationException;
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public final int getNumberOfOperands() {
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return 2;
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}
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}
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