std::complex::complex

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Numerics library

Common mathematical functions

Special mathematical functions

Floating-point environment (C++11)

Complex numbers

Numeric arrays

Pseudo-random number generation

Compile-time rational arithmetic (C++11)

Numeric algorithms

gcd (C++17)

lcm (C++17)

Generic numeric operations

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

reduce (C++17)

transform_reduce (C++17)

inclusive_scan (C++17)

exclusive_scan (C++17)

transform_inclusive_scan (C++17)

transform_exclusive_scan (C++17)

Bit operations

bit_cast (C++20)

ispow2 (C++20)

ceil2 (C++20)

floor2 (C++20)

log2p1 (C++20)

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)

primary template complex<T>
complex( const T& re = T(), const T& im = T() );	(1)	(until C++14)
constexpr complex( const T& re = T(), const T& im = T() );	(1)	(since C++14)
complex( const complex& other );	(2)	(until C++14)
constexpr complex( const complex& other );	(2)	(since C++14)
template< class X > complex( const complex<X>& other);	(3)	(until C++14)
template< class X > constexpr complex( const complex<X>& other);	(3)	(since C++14)
specialization complex<float>
complex(float re = 0.0f, float im = 0.0f);	(1)	(until C++11)
constexpr complex(float re = 0.0f, float im = 0.0f);	(1)	(since C++11)
explicit complex(const complex<double>& other); explicit complex(const complex<long double>& other);	(3)	(until C++11)
explicit constexpr complex(const complex<double>& other); explicit constexpr complex(const complex<long double>& other);	(3)	(since C++11)
specialization complex<double>
complex(double re = 0.0, double im = 0.0);	(1)	(until C++11)
constexpr complex(double re = 0.0, double im = 0.0);	(1)	(since C++11)
complex(const complex<float>& other); explicit complex(const complex<long double>& other);	(3)	(until C++11)
constexpr complex(const complex<float>& other); explicit constexpr complex(const complex<long double>& other);	(3)	(since C++11)
specialization complex<long double>
complex(long double re = 0.0L, long double im = 0.0L);	(1)	(until C++11)
constexpr complex(long double re = 0.0L, long double im = 0.0L);	(1)	(since C++11)
complex(const complex<float>& other); complex(const complex<double>& other);	(3)	(until C++11)
constexpr complex(const complex<float>& other); constexpr complex(const complex<double>& other);	(3)	(since C++11)

Constructs the std::complex object.

1) Constructs the complex number from real and imaginary parts.

2) Copy constructor. Constructs the object with the copy of the contents of other. The copy constructor is implicit in the standard specializations.

3) Converting constructor. Constructs the object from a complex number of a different type.

Parameters

re	-	the real part
im	-	the imaginary part
other	-	another complex to use as source

See also

operator=	assigns the contents (public member function)
operator""ifoperator""ioperator""il (C++14)	A std::complex literal representing pure imaginary number (function)