MarkLogic 9 Product Documentationmath:atan
math:atan( $x as xs:double ) as xs:double
Summary
Returns the arc tangent of x, in radians. in the range from -pi/2 to +pi/2 (inclusive).
| Parameters | |
|---|---|
| x | The floating point number to be evaluated. |
Example
math:atan(3.14159) => 1.26262701154934