math:pi - XPath XQuery Reference

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XPath/XQuery pi function

Returns an approximation to the mathematical constant π.

math:pi(

) as xs:double

This function is deterministic, context-independent, and focus-independent.

This function returns the xs:double value whose lexical representation is 3.141592653589793e0

The expression 2*math:pi() returns 6.283185307179586e0.

The expression 60 * (math:pi() div 180) converts an angle of 60 degrees to radians.

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