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std::complex::real(3)	      C++ Standard Libary	 std::complex::real(3)

NAME
       std::complex::real - std::complex::real

Synopsis
	  primary template
	  std::complex<T>
	  T real() const;	       (until
				       C++14)
	  constexpr T real()	       (since
	  const;		       C++14)
	  void real( T value		      (until
	  );				      C++20)
	  constexpr void real(		      (since
	  T value );			      C++20)
	  specialization
	  std::complex<float>
	  float	real() const;			     (until
						     C++11)
	  constexpr float			     (since
	  real() const;				     C++11)
	  void real( float				    (until
	  value	);					    C++20)
	  constexpr void real(				    (since
	  float	value );				    C++20)
	  specialization
	  std::complex<double> (1)
	  double real()	const;					   (until
				   (2)				   C++11)
	  constexpr double					   (since
	  real() const;						   C++11)
	  void real( double	       (1)				  (un-
       til
	  value								    );
       C++20)
	  constexpr	     void	    real(			   (2)
       (since
	  double			    value			    );
       C++20)
	  specialization
	  std::complex<long			     (1)
	  double>
	  long	    double	real()					   (2)
       (until
	  const;
       C++11)
	  constexpr							  long
       (since
	  double   real()    const;					   (1)
       C++11)
	  void				  real(				  long
       (until
	  double value );						   (2)
       C++20)
	  constexpr			    void			 real(
       (since
	  long		       double		      value		    );
       C++20)

	  Accesses the real part of the	complex	number.

	  1) Returns the real part.
	  2) Sets the real part	to value.

Parameters
	  value	- the value to set the real part to

Return value
	  1) The real part of *this.
	  2) (none)

Notes
	  In  C++11,  overload	(1) in std::complex specializations used to be
       specified without
	  const	qualifier. However, in C++11, a	constexpr specifier used in  a
       non-static
	  member  function implies const, and thus the behavior	is as if const
       is specified.

	  Defect reports

	  The following	behavior-changing defect reports were applied retroac-
       tively to
	  previously published C++ standards.

	    DR	  Applied to	 Behavior as  published		       Correct
       behavior
	  LWG  387  C++98	the  real part could not be set	can be set di-
       rectly via a new	real
			     directly			    overload

See also
	  real returns the real	part
	       (function template)
	  imag accesses	the imaginary part of the complex number
	       (public member function)

http://cppreference.com		  2024.06.10		 std::complex::real(3)

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