std::real(std::complex)

 

C++

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Technical Specifications

 

Numerics library

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Complex numbers

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Compile-time rational arithmetic (C++11)

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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 operator""ioperator""ifoperator""il (C++14)(C++14)(C++14)
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 real( const complex<T>& z );	(1)	(until C++14)
template< class T > constexpr T real( const complex<T>& z );	(1)	(since C++14)
long double real( long double z );	(2)	(since C++11)
template< class DoubleOrInteger > double real( DoubleOrInteger z );	(3)	(since C++11)
float real( float z );	(4)	(since C++11)

Returns the real component of the complex number z, i.e. z.real().

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

Parameters

z

-

complex value

Return value

the real component of z

See also

real	accesses the real part of the complex number (public member function)
imag	returns the imaginary component (function template)
C documentation for creal