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- /* ====================================================================
- 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.poi.ss.formula.eval;
-
- import org.apache.poi.ss.formula.functions.ArrayFunction;
- import org.apache.poi.ss.formula.functions.Fixed2ArgFunction;
- import org.apache.poi.ss.formula.functions.Function;
- import org.apache.poi.ss.formula.functions.MatrixFunction.MutableValueCollector;
- import org.apache.poi.ss.formula.functions.MatrixFunction.TwoArrayArg;
-
- /**
- * @author Josh Micich
- */
- public abstract class TwoOperandNumericOperation extends Fixed2ArgFunction implements ArrayFunction {
-
- protected final double singleOperandEvaluate(ValueEval arg, int srcCellRow, int srcCellCol) throws EvaluationException {
- ValueEval ve = OperandResolver.getSingleValue(arg, srcCellRow, srcCellCol);
- return OperandResolver.coerceValueToDouble(ve);
- }
-
- public ValueEval evaluateArray(ValueEval args[], int srcRowIndex, int srcColumnIndex) {
- if (args.length != 2) {
- return ErrorEval.VALUE_INVALID;
- }
- return new ArrayEval().evaluate(srcRowIndex, srcColumnIndex, args[0], args[1]);
- }
-
- public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) {
- double result;
- try {
- double d0 = singleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);
- double d1 = singleOperandEvaluate(arg1, srcRowIndex, srcColumnIndex);
- result = evaluate(d0, d1);
- if (result == 0.0) { // this '==' matches +0.0 and -0.0
- // Excel converts -0.0 to +0.0 for '*', '/', '%', '+' and '^'
- if (!(this instanceof SubtractEvalClass)) {
- return NumberEval.ZERO;
- }
- }
- if (Double.isNaN(result) || Double.isInfinite(result)) {
- return ErrorEval.NUM_ERROR;
- }
- } catch (EvaluationException e) {
- return e.getErrorEval();
- }
- return new NumberEval(result);
- }
-
- protected abstract double evaluate(double d0, double d1) throws EvaluationException;
-
- private final class ArrayEval extends TwoArrayArg {
- private final MutableValueCollector instance = new MutableValueCollector(true, true);
-
- protected double[] collectValues(ValueEval arg) throws EvaluationException {
- return instance.collectValues(arg);
- }
-
- protected double[][] evaluate(double[][] d1, double[][] d2) throws IllegalArgumentException, EvaluationException {
- int width = (d1[0].length < d2[0].length) ? d1[0].length : d2[0].length;
- int height = (d1.length < d2.length) ? d1.length : d2.length;
-
- double result[][] = new double[height][width];
-
- for (int j = 0; j < height; j++) {
- for (int i = 0; i < width; i++) {
- result[j][i] = TwoOperandNumericOperation.this.evaluate(d1[j][i], d2[j][i]);
- }
- }
-
- return result;
- }
- }
-
- public static final Function AddEval = new TwoOperandNumericOperation() {
- protected double evaluate(double d0, double d1) {
- return d0+d1;
- }
- };
- public static final Function DivideEval = new TwoOperandNumericOperation() {
- protected double evaluate(double d0, double d1) throws EvaluationException {
- if (d1 == 0.0) {
- throw new EvaluationException(ErrorEval.DIV_ZERO);
- }
- return d0/d1;
- }
- };
- public static final Function MultiplyEval = new TwoOperandNumericOperation() {
- protected double evaluate(double d0, double d1) {
- return d0*d1;
- }
- };
- public static final Function PowerEval = new TwoOperandNumericOperation() {
- protected double evaluate(double d0, double d1) {
- return Math.pow(d0, d1);
- }
- };
- private static final class SubtractEvalClass extends TwoOperandNumericOperation {
- public SubtractEvalClass() {
- //
- }
- protected double evaluate(double d0, double d1) {
- return d0-d1;
- }
- }
- public static final Function SubtractEval = new SubtractEvalClass();
- }
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