std::valarray::sum — cppreference.com
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Calcule la somme des éléments .
Original:
Computes the sum of the elements.
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La fonction peut être utilisée uniquement si operator+= est défini pour T type. Si le std::valarray est vide, le comportement est indéfini. L'ordre dans lequel les éléments sont traités par cette fonction n'est pas spécifié .
Original:
The function can be used only if operator+= is defined for type T. If the std::valarray is empty, the behavior is undefined. The order in which the elements are processed by this function is unspecified.
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Paramètres
(Aucun)
Original:
(none)
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Retourne la valeur
La somme des éléments .
Original:
The sum of the elements.
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Exemple
#include <iostream> #include <valarray> int main() { std::valarray<int> a = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; std::cout << a.sum() << '\n'; }
Résultat :
Voir aussi
| applies a function to every element of a valarray (fonction membre publique) [edit] | |
résume un ensemble d'éléments Original: sums up a range of elements The text has been machine-translated via Google Translate. (fonction générique) [edit] | |