Changes

The math module defines [[Querying#Functions|XQuery Functions]] to perform mathematical operations, such as <code>pi</code>, <code>asin</code> and <code>acos</code>. All functions are preceded by the <code>math:</code> prefix, which is linked to the <code>http://www.w3.org/2005/xpath-functions/math</code> namespace. Some of the functions have also been specified in the [http://www.w3.org/TR/xpath-functions-30/ Functions and Operators Specification] of the upcoming XQuery 3.0 Recommendation.