argument()
argument(\Complex\Complex|mixed $complex) : float
Returns the argument of a complex number.
Also known as the theta of the complex number, i.e. the angle in radians from the real axis to the representation of the number in polar coordinates.
This function is a synonym for theta()
Parameters
| \Complex\Complex|mixed | $complex | Complex number or a numeric value. |
Throws
- \Complex\Exception
If argument isn't a valid real or complex number.
Returns
float —The argument (or theta) value of the complex argument.