std::polar(std::complex)

From cppreference.com
Defined in header <complex>
template< class T >
complex<T> polar( const T& r, const T& theta = 0 );

Returns a complex number with magnitude r and phase angle theta.

[edit] Parameters

r - magnitude
theta - phase angle

[edit] Return value

a complex number determined by r and theta

[edit] See also

returns the phase angle
(function template)
returns the magnitude of a complex number
(function template)