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.BlankEval;
24: import org.apache.poi.hssf.record.formula.eval.ErrorEval;
25: import org.apache.poi.hssf.record.formula.eval.Eval;
26: import org.apache.poi.hssf.record.formula.eval.NumberEval;
27: import org.apache.poi.hssf.record.formula.eval.NumericValueEval;
28: import org.apache.poi.hssf.record.formula.eval.ValueEval;
29:
30: public class Rounddown extends NumericFunction {
31:
32: public Eval evaluate(Eval[] operands, int srcRow, short srcCol) {
33: double d0 = 0;
34: double d1 = 0;
35: ValueEval retval = null;
36:
37: switch (operands.length) {
38: default:
39: retval = ErrorEval.VALUE_INVALID;
40: break;
41: case 2:
42: ValueEval ve = singleOperandEvaluate(operands[0], srcRow,
43: srcCol);
44: if (ve instanceof NumericValueEval) {
45: NumericValueEval ne = (NumericValueEval) ve;
46: d0 = ne.getNumberValue();
47: } else if (ve instanceof BlankEval) {
48: // do nothing
49: } else {
50: retval = ErrorEval.NUM_ERROR;
51: }
52:
53: if (retval == null) {
54: ve = singleOperandEvaluate(operands[1], srcRow, srcCol);
55: if (ve instanceof NumericValueEval) {
56: NumericValueEval ne = (NumericValueEval) ve;
57: d1 = ne.getNumberValue();
58: } else if (ve instanceof BlankEval) {
59: // do nothing
60: } else {
61: retval = ErrorEval.NUM_ERROR;
62: }
63: }
64: }
65:
66: if (retval == null) {
67: double d;
68: if (d0 > Integer.MAX_VALUE) {
69: d = (Double.isInfinite(d0)) ? Double.NaN : 0;
70: } else {
71: d = MathX.roundDown(d0, (int) d1);
72: }
73: retval = (Double.isNaN(d) || Double.isInfinite(d)) ? (ValueEval) ErrorEval.VALUE_INVALID
74: : new NumberEval(d);
75: }
76: return retval;
77: }
78: }
|