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

    Constructors
    Constructor and Description
    `AbsFunction()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Property` | `eval(Property[] args, PropertyInfo propInfo)` Evaluate the function
    `int` | `getRequiredArgsCount()`

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

      `getOptionalArgDefault, getOptionalArgsCount, getPercentBase, getPropertyName, hasVariableArgs`

    - ### 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

    - #### getRequiredArgsCount

          public int getRequiredArgsCount()

      Returns:
        the number of required (non-optional) arguments that must be specified in the argument list

    - #### eval

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

      Evaluate the function
      Parameters:
        `args` - an array of Properties that should be evaluated
        `propInfo` - property information instance that applies to property being evaluated
      Returns:
        the Property satisfying the function
      Throws:
        `PropertyException` - for problems when evaluating the function

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