01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: /*
18: * Created on May 15, 2005
19: *
20: */
21: package org.apache.poi.hssf.record.formula.functions;
22:
23: import org.apache.poi.hssf.record.formula.eval.ErrorEval;
24: import org.apache.poi.hssf.record.formula.eval.Eval;
25: import org.apache.poi.hssf.record.formula.eval.NumberEval;
26: import org.apache.poi.hssf.record.formula.eval.ValueEval;
27:
28: /**
29: * @author Amol S. Deshmukh < amolweb at ya hoo dot com >
30: *
31: */
32: public class Sumx2py2 extends XYNumericFunction {
33:
34: public Eval evaluate(Eval[] operands, int srcCellRow,
35: short srcCellCol) {
36: ValueEval retval = null;
37: double[][] values = null;
38:
39: int checkLen = 0; // check to see that all array lengths are equal
40: switch (operands.length) {
41: default:
42: retval = ErrorEval.VALUE_INVALID;
43: break;
44: case 2:
45: values = getValues(operands, srcCellRow, srcCellCol);
46: if (values == null || values[X] == null
47: || values[Y] == null || values[X].length == 0
48: || values[Y].length == 0
49: || values[X].length != values[Y].length) {
50: retval = ErrorEval.VALUE_INVALID;
51: }
52: }
53:
54: if (retval == null) {
55: double d = MathX.sumx2py2(values[X], values[Y]);
56: retval = (Double.isNaN(d) || Double.isInfinite(d)) ? (ValueEval) ErrorEval.NUM_ERROR
57: : new NumberEval(d);
58: }
59:
60: return retval;
61: }
62: }
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