Class MathFunctionSet.PiFn

All Implemented Interfaces:
Callable, Function, GroundedValue, Item, Sequence
Enclosing class:
MathFunctionSet

public static class MathFunctionSet.PiFn extends SystemFunction
Implement math:pi
  • Constructor Details

    • PiFn

      public PiFn()
  • Method Details

    • makeFunctionCall

      public Expression makeFunctionCall(Expression... arguments)
      Description copied from class: SystemFunction
      Make an expression that either calls this function, or that is equivalent to a call on this function
      Overrides:
      makeFunctionCall in class SystemFunction
      Parameters:
      arguments - the supplied arguments to the function call
      Returns:
      either a function call on this function, or an expression that delivers the same result
    • call

      public DoubleValue call(XPathContext context, Sequence[] arguments) throws XPathException
      Description copied from interface: Function
      Invoke the function
      Parameters:
      context - the XPath dynamic evaluation context
      arguments - the actual arguments to be supplied
      Returns:
      the result of invoking the function
      Throws:
      XPathException - if a dynamic error occurs within the function