std::complex::operator+(binary), operator-(binary), operator*, operator/ – cppreference.com

std::complex::operator+(binary), operator-(binary), operator*, operator/

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C++
 
Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Komplexe Zahlen
Member-Funktionen
Original:
Member functions
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complex::complex
complex::operator=
complex::real
complex::imag
complex::operator+=
complex::operator-=
complex::operator*=
complex::operator/=
Non-Member-Funktionen
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Non-member functions
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operator==
operator!=
operator<<
operator>>
real
imag
abs
arg
norm
conj
proj(C++11)
polar
Exponentialfunktionen
Original:
Exponential functions
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exp
log
log10
Power-Funktionen
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Power functions
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pow
sqrt
Trigonometrische Funktionen
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Trigonometric functions
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asin(C++11)
acos(C++11)
atan(C++11)
Hyperbolische Funktionen
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Hyperbolic functions
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asinh(C++11)
acosh(C++11)
atanh(C++11)
 
<tbody> </tbody>
template< class T > complex<T> operator+( const complex<T>& lhs, const complex<T>& rhs);
 (1)
template< class T > complex<T> operator+( const complex<T>& lhs, const T& rhs);
 (2)
template< class T > complex<T> operator+( const T& lhs, const complex<T>& rhs);
 (3)
template< class T > complex<T> operator-( const complex<T>& lhs, const complex<T>& rhs);
 (4)
template< class T > complex<T> operator-( const complex<T>& lhs, const T& rhs);
 (5)
template< class T > complex<T> operator-( const T& lhs, const complex<T>& rhs);
 (6)
template< class T > complex<T> operator*( const complex<T>& lhs, const complex<T>& rhs);
 (7)
template< class T > complex<T> operator*( const complex<T>& lhs, const T& rhs);
 (8)
template< class T > complex<T> operator*( const T& lhs, const complex<T>& rhs);
 (9)
template< class T > complex<T> operator/( const complex<T>& lhs, const complex<T>& rhs);
 (10)
template< class T > complex<T> operator/( const complex<T>& lhs, const T& rhs);
 (11)
template< class T > complex<T> operator/( const T& lhs, const complex<T>& rhs);
 (12)
Implementiert die binären Operatoren für komplexe Arithmetik und für gemischte Komplex / skalare Arithmetik. Scalar Argumente werden als komplexe Zahlen mit Realteil gleich dem Argument und dem imaginären Teil auf Null gesetzt behandelt .
Original:
Implements the binary operators for complex arithmetic and for mixed complex/scalar arithmetic. Scalar arguments are treated as complex numbers with the real part equal to the argument and the imaginary part set to zero.
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1-3)
Gibt die Summe der Argumente
Original:
Returns the sum of its arguments
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4-6)
Gibt das Ergebnis der Subtraktion rhs von lhs
Original:
Returns the result of subtracting rhs from lhs
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7-9)
Multipliziert die Argumente
Original:
Multiplies its arguments
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10-12)
Teilt lhs durch rhs
Original:
Divides lhs by rhs
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Parameter

lhs, rhs -
Die Argumente: entweder beide komplexen Zahlen oder ein komplexer und ein Skalar passenden Typ (float, double, long double)
Original:
the arguments: either both complex numbers or one complex and one scalar of matching type (float, double, long double)
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Rückgabewert

1-3) complex<T>(lhs) += rhs
4-6) complex<T>(lhs) -= rhs
7-9) complex<T>(lhs) *= rhs
10-12) complex<T>(lhs) /= rhs

Beispiel

#include <iostream>
#include <complex>
int main()
{
    std::complex<double> c2(2, 0);
    std::complex<double> ci(0, 1);

    std::cout << ci << " + " << c2 << " = " << ci+c2 << '\n'
              << ci << " * " << ci << " = " << ci*ci << '\n'
              << ci << " + " << c2 << " / " << ci << " = " << ci+c2/ci << '\n'
              << 1  << " / " << ci << " = " << 1./ci << '\n';

//    std::cout << 1.f/ci; // compile error
//    std::cout << 1/ci; // compile error
}

Output: 

(0,1) + (2,0) = (2,1)
(0,1) * (0,1) = (-1,0)
(0,1) + (2,0) / (0,1) = (0,-1)
1 / (0,1) = (0,-1)

Siehe auch