Arg value calculation: Arg(z)=arg(z)+2kπ. Mathematically, Arg(z) represents the radial angle of the complex number z, which has an infinite number of values, and the difference between any two values is an integer multiple of 2π. Arg(z) represents the principal value of the complex z angle. The radial angle of any non-zero complex number z=a+bi has an infinite number of values, which are different by integer multiples of 2π.

Applicable to-π