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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[editar] Parâmetros

[editar] Valor de retorno

[editar] Notas

• 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.

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  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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[editar] 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
}

[editar] 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';
}

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[editar] Veja também