std::abs<div class="t-tr-text">(Std :: valarray)<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::valarray)</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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std::valarray

Funções de membro Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
valarray::valarray valarray::~valarray valarray::operator= valarray::operator[] valarray::swap valarray::size valarray::resize valarray::sum valarray::min valarray::max valarray::shift valarray::cshift valarray::apply	valarray::operator+ valarray::operator- valarray::operator~ valarray::operator! valarray::operator+= valarray::operator-= valarray::operator*= valarray::operator/= valarray::operator%= valarray::operator&= valarray::operator|= valarray::operator^= valarray::operator<<= valarray::operator>>=
Não-membros funções Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
swap (C++11) begin (C++11) end (C++11) abs exp log log10 pow sqrt sin cos tan asin acos atan atan2 sinh cosh tanh	operator*operator/operator%operator+operator-operator^None operator&operator|operator<<operator>>operator&&operator||None operator==operator!=operator<operator>operator<=operator>=
Classes auxiliares Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
slice_array gslice_array indirect_array	slice gslice mask_array

 

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Definido no cabeçalho <valarray>
template< class T > valarray<T> abs( const valarray<T>& va );

Calcula o valor absoluto de cada elemento da matriz de valor.

Original:

Computes absolute value of each element in the value array.

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Parâmetros

va

-

matriz de valor para aplicar a operação a Original: value array to apply the operation to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

Matriz de valor contendo valores absolutos dos valores em va.

Original:

Value array containing absolute values of the values in va.

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Notas

Qualificado de função (abs) é usado para executar o cálculo. Se essa função não estiver disponível, std::abs é utilizado devido ao argumento de pesquisa dependente.

Original:

Unqualified function (abs) is used to perform the computation. If such function is not available, std::abs is used due to argument dependent lookup.

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A função pode ser implementada com o tipo de retorno diferente de std::valarray. Neste caso, o tipo de substituição tem as seguintes propriedades:

Original:

The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:

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• Todas as funções const membros std::valarray são fornecidos.

  Original:

  All const member functions of std::valarray are provided.

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• std::valarray, std::slice_array, std::gslice_array, std::mask_array std::indirect_array e pode ser construído a partir do tipo de reposição.

  Original:

  std::valarray, std::slice_array, std::gslice_array, std::mask_array and std::indirect_array can be constructed from the replacement type.

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• Todas as funções de aceitar um argumentos de const std::valarray& tipo devem também aceitar o tipo de substituição.

  Original:

  All functions accepting a arguments of type const std::valarray& should also accept the replacement type.

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• Todas as funções que aceitam dois argumentos do tipo const std::valarray& deve aceitar todas as combinações de const std::valarray& e do tipo de substituição.

  Original:

  All functions accepting two arguments of type const std::valarray& should accept every combination of const std::valarray& and the replacement type.

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Possível implementação

template< class T > valarray<T> abs( const valarray<T>& va ) { valarray<T> other = va; for (T &i : other) { i = abs(i); } return other; // proxy object may be returned }

Exemplo

#include <valarray>
#include <iostream>

int main()
{
    std::valarray<int> v{1, -2, 3, -4, 5, -6, 7, -8};
    std::valarray<int> v2 = std::abs(v);
    for(auto n : v2) {
        std::cout << n << ' ';
    }
    std::cout << '\n';
}

Saída:

1 2 3 4 5 6 7 8

Veja também

abs(int)	calcula o valor absoluto de um valor integral (|x|) Original: computes absolute value of an integral value (|x|) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
abs(float)	valor absoluto de um valor de ponto flutuante (|x|) Original: absolute value of a floating point value (|x|) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função)
abs(std::complex)	retorna a magnitude de um número complexo Original: returns the magnitude of a complex number The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)