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std::proj<div class="t-tr-text">(Std :: complexo)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::complex)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

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< cpp‎ | numeric‎ | complex

 
 
Biblioteca numéricos
Funções matemáticas comuns
De ponto flutuante ambiente
Números complexos
Matrizes numéricas
Pseudo-aleatório de geração de números
Tempo de compilação aritmética racional (C++11)
Genéricos operações numéricas
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Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Números complexos
Funções de membro
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Member functions
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complex::complex
complex::operator=
complex::real
complex::imag
complex::operator+=
complex::operator-=
complex::operator*=
complex::operator/=
Não-membros funções
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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
Funções exponenciais
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Exponential functions
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Power functions
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asin(C++11)
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atan(C++11)
Funções hiperbólicas
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Hyperbolic functions
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asinh(C++11)
acosh(C++11)
atanh(C++11)
 
Defined in header <complex>
template< class T >
complex<T> proj( const complex<T>& z );
(a partir do C++ 11)
Retorna a projeção do z número complexo para a esfera de Riemann.
Original:
Returns the projection of the complex number z onto the Riemann sphere.
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Para a maioria z, std::proj(z)==z, mas todos os infinitos complexos, até mesmo os números em que um componente é infinito e o outro é NaN, tornar-se positivo real infinito (INFINITY, 0) ou (INFINITY, -0). O sinal de componente (zero) imaginário é o sinal de std::imag(z).
Original:
For most z, std::proj(z)==z, but all complex infinities, even the numbers where one component is infinite and the other is NaN, become positive real infinity, (INFINITY, 0) or (INFINITY, -0). The sign of the imaginary (zero) component is the sign of std::imag(z).
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Índice

[editar] Parâmetros

z -
valor complexo
Original:
complex value
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[editar] Valor de retorno

a projeção de z para a esfera de Riemann
Original:
the projection of z onto the Riemann sphere
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[editar] Exemplo

#include <iostream>
#include <complex>
 
int main()
{
    std::complex<double> c1(1, 2);
    std::cout << "proj" << c1 << " = " << std::proj(c1) << '\n';
 
    std::complex<double> c2(INFINITY, -1);
    std::cout << "proj" << c2 << " = " << std::proj(c2) << '\n';
 
    std::complex<double> c3(0, -INFINITY);
    std::cout << "proj" << c3 << " = " << std::proj(c3) << '\n';
}

Output:

proj(1,2) = (1,2)
proj(inf,-1) = (inf,-0)
proj(0,-inf) = (inf,-0)

[editar] Veja também

retorna a magnitude de um número complexo
Original:
returns the magnitude of a complex number
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(modelo de função) [edit]
retorna a magnitude ao quadrado
Original:
returns the squared magnitude
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(modelo de função) [edit]
constrói um número complexo de magnitude e ângulo de fase
Original:
constructs a complex number from magnitude and phase angle
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(modelo de função) [edit]