math:pi

Returns an approximation to the mathematical constant π.

pi() ➔ xs:double

There are no arguments
Result		xs:double

Details

Namespace: http://www.w3.org/2005/xpath-functions/math

Applies to: XPath 3.0, XSLT 3.0, XQuery 3.0 (if enabled in Saxon: requires Saxon-PE or Saxon-EE)

Notes on the Saxon implementation

Implemented in Saxon 9.3; available whether or not support for XPath 3.0 is enabled