exslt-math:constant

Delivers the value of one of the named constants "PI", "E", "SQRRT2", "LN2", "LN10", "LOG2E", "SQRT1_2",.

constant($name as xs:string, $precision as xs:integer) ➔ xs:double

Arguments
	$name	xs:string	The constant required
	$precision	xs:integer	The required precision
Result		xs:double

Details

Namespace: http://exslt.org/math

Notes on the Saxon implementation

The implementation starts with a decimal string representation of the constant, truncates this to the required precision, then parses the result as a double.