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: /* $Id: FloorFunction.java 554251 2007-07-07 20:13:41Z adelmelle $ */
19:
20: package org.apache.fop.fo.expr;
21:
22: import org.apache.fop.fo.properties.NumberProperty;
23: import org.apache.fop.fo.properties.Property;
24:
25: class FloorFunction extends FunctionBase {
26:
27: public int nbArgs() {
28: return 1;
29: }
30:
31: public Property eval(Property[] args, PropertyInfo pInfo)
32: throws PropertyException {
33: Number dbl = args[0].getNumber();
34: if (dbl == null) {
35: throw new PropertyException(
36: "Non number operand to floor function");
37: }
38: return NumberProperty
39: .getInstance(Math.floor(dbl.doubleValue()));
40: }
41:
42: }
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