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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.hssf.record.formula.eval;
-
- import org.apache.poi.hssf.record.formula.functions.Function;
-
-
- /**
- * Implementation of Excel formula token '%'. <p/>
- * @author Josh Micich
- */
- public final class PercentEval implements Function {
-
- public static final Function instance = new PercentEval();
-
- private PercentEval() {
- // enforce singleton
- }
-
- public ValueEval evaluate(ValueEval[] args, int srcRow, short srcCol) {
- if (args.length != 1) {
- return ErrorEval.VALUE_INVALID;
- }
- double d;
- try {
- ValueEval ve = OperandResolver.getSingleValue(args[0], srcRow, srcCol);
- d = OperandResolver.coerceValueToDouble(ve);
- } catch (EvaluationException e) {
- return e.getErrorEval();
- }
- if (d == 0.0) { // this '==' matches +0.0 and -0.0
- return NumberEval.ZERO;
- }
- return new NumberEval(d / 100);
- }
- }
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