math:atan
Returns the arc tangent of the argument, the result being in the range -π
/2
to +π
/2 radians.
atan($arg as xs:double?) ➔ xs:double?
Arguments | |||
| $arg | xs:double? | The supplied angle in radians |
Result | xs:double? |
Namespace
http://www.w3.org/2005/xpath-functions/math
Links to W3C specifications
XPath 3.0 Functions and Operators
XPath 3.1 Functions and Operators
Notes on the Saxon implementation
Implemented since Saxon 9.3; available whether or not XPath 3.0 is enabled. Saxon also
(for compatibility) implements the function math:atan() in namespace
http://exslt.org/math
.