atan()
atan(\Complex\Complex|mixed $complex) : \Complex\Complex
Returns the inverse tangent of a complex number.
Parameters
| \Complex\Complex|mixed | $complex | Complex number or a numeric value. |
Throws
- \Complex\Exception
If argument isn't a valid real or complex number.
- \InvalidArgumentException
If function would result in a division by zero
Returns
\Complex\Complex —The inverse tangent of the complex argument.