.. _functx_is-leap-year:

===================
functx:is-leap-year
=================== 

Whether a date falls in a leap year

Description
~~~~~~~~~~~
The functx:is-leap-year function returns true if $date falls in a leap year.

The first four characters of the string value of $date must be the year. For 
example, the argument can be a value of type xs:date, xs:dateTime, or an 
xs:integer with four significant digits, or an xs:string or untyped value of the 
form YYYY or YYYY-MM-DD.

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   * - **Parameters**
     - **Description**
   * - date:date()
     - the date or year

Examples
~~~~~~~~
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   * - **XPath**
     - **Results**
   * - functx:is-leap-year(xs:date('2004-01-23'))
     - true
   * - functx:is-leap-year(2004)
     - true
   * - functx:is-leap-year('2005-02-15')
     - false

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`functx_last-day-of-month`.