org.apache.fop.fo.expr
Class AbsFunction

java.lang.Object
  org.apache.fop.fo.expr.FunctionBase
      org.apache.fop.fo.expr.AbsFunction

All Implemented Interfaces:

Function

public class AbsFunction
extends FunctionBase

Class modelling the abs Number Function. See Sec. 5.10.1 of the XSL-FO spec.

Constructor Summary

AbsFunction()

Method Summary

Property	eval(Property[] args, PropertyInfo propInfo) Evaluate the function
int	nbArgs()

Methods inherited from class org.apache.fop.fo.expr.FunctionBase

getPercentBase, padArgsWithPropertyName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbsFunction

public AbsFunction()

Method Detail

nbArgs

public int nbArgs()

Returns:

1 (the number of arguments required for the abs function)

eval

public Property eval(Property[] args,
                     PropertyInfo propInfo)
              throws PropertyException

Description copied from interface: Function

Evaluate the function

Parameters:

args - array of arguments to be evaluated, the first of which should be a numeric value

propInfo - the PropertyInfo object to be evaluated

Returns:

the absolute value of the input

Throws:

PropertyException - for non-numeric input