Class CeilingFunction

java.lang.Object
org.jaxen.function.CeilingFunction
All Implemented Interfaces:
Function
public class CeilingFunction extends Object implements Function

4.4 number ceiling(number)

The ceiling function returns the smallest (closest to negative infinity) number that is not less than the argument and that is an integer....If the argument is NaN, then NaN is returned. If the argument is positive infinity, then positive infinity is returned. If the argument is negative infinity, then negative infinity is returned. If the argument is positive zero, then positive zero is returned. If the argument is negative zero, then negative zero is returned. If the argument is less than zero, but greater than -1, then negative zero is returned.

See Also:

  • Constructor Details

    • CeilingFunction

      public CeilingFunction()
      Create a new CeilingFunction object.

  • Method Details

    • call

      public Object call(Context context, List args) throws FunctionCallException
      Returns the smallest integer greater than or equal to a number.
      Specified by:
      call in interface Function
      Parameters:
      context - the context at the point in the expression when the function is called
      args - a list with exactly one item which will be converted to a Double as if by the XPath number() function
      Returns:
      a Double containing the smallest integer greater than or equal args.get(0)
      Throws:
      FunctionCallException - if args has more or less than one item

    • evaluate

      public static Double evaluate(Object obj, Navigator nav)
      Returns the smallest integer greater than or equal to the argument. If necessary, the argument is first converted to a Double as if by the XPath number() function.
      Parameters:
      obj - the object whose ceiling is returned
      nav - ignored
      Returns:
      a Double containing the smallest integer greater than or equal to obj