std::polar(std::complex) (3) Linux Manual Page

std::polar(std::complex) – std::polar(std::complex)

Synopsis

Defined in header<complex>

    template <class T>

    complex<T> polar(const T &r, const T &theta = T());

Returns a complex number with magnitude r and phase angle theta.
The behavior is undefined if r is negative or NaN, or if theta is infinite.

Parameters

r – magnitude
theta – phase angle

Return value

a complex number determined by r and theta
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior
LWG_2459 C++98 behavior unclear for some inputs made undefined
LWG_2870 C++98 default value of parameter theta not dependent made dependent

See also

                  returns the magnitude of a complex number
abs(std::complex) (function template)
                  returns the phase angle
arg (function template)