std::arg(std::complex)

 

C++

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std::complex

Member functions
complex::complex
complex::operator=
complex::real
complex::imag
complex::operator+= complex::operator-= complex::operator*= complex::operator/=
Non-member functions
operator+ operator- operator+ operator- operator* operator/ operator== operator!= operator<< operator>>	real imag abs arg norm conj proj (C++11) polar
Exponential functions
exp
log
log10
Power functions
pow
sqrt
Trigonometric functions
sin cos tan	asin (C++11) acos (C++11) atan (C++11)
Hyperbolic functions
sinh cosh tanh	asinh (C++11) acosh (C++11) atanh (C++11)

 

Defined in header <complex>
template< class T > T arg( const complex<T>& z );	(1)
long double arg( long double z );	(2)	(since C++11)
template< class DoubleOrIngeter > double arg( DoubleOrInteger z );	(3)	(since C++11)
float arg( float z );	(4)	(since C++11)

Returns the phase angle of the complex number z, i.e. atan2(std::imag(z), std::real(z)).

(since C++11)Additional overloads are provided for float, double, long double, and all integer types, which are treated as complex numbers with zero imaginary component.

Parameters

z

-

complex value

Return value

the phase angle of z

See also

norm	returns the squared magnitude (function template)
conj	returns the complex conjugate (function template)
polar	constructs a complex number from magnitude and phase angle (function template)