/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/*
 * 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,
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package com.sun.org.apache.xpath.internal.functions;

import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XNumber;
import com.sun.org.apache.xpath.internal.objects.XObject;

Execute the round() function.
@xsl.usage
advanced/**
 * Execute the round() function.
 * @xsl.usage advanced
 */
public class FuncRound extends FunctionOneArg
{
    static final long serialVersionUID = -7970583902573826611L;

  
Execute the function.  The function must return
a valid object.
Params:
xctxt – The current execution context.
Throws:
TransformerException – 
Returns:
A valid XObject./**
   * Execute the function.  The function must return
   * a valid object.
   * @param xctxt The current execution context.
   * @return A valid XObject.
   *
   * @throws javax.xml.transform.TransformerException
   */
  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  {
          final XObject obj = m_arg0.execute(xctxt);
          final double val= obj.num();
          if (val >= -0.5 && val < 0) return new XNumber(-0.0);
          if (val == 0.0) return new XNumber(val);
          return new XNumber(java.lang.Math.floor(val
                                            + 0.5));
  }
}