std::valarray::sum

 

C++

Language

Standard library headers

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Utilities library

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Containers library

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Input/output library

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Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

 

Numerics library

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accumulate

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std::valarray

Member functions
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>>=
Non-member functions
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^operator&operator|operator<<operator>>operator&&operator|| operator==operator!=operator<operator>operator<=operator>=
Helper classes
slice_array gslice_array indirect_array	slice gslice mask_array

 

T sum() const;

Computes the sum of the elements.

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.

Parameters

(none)

Return value

The sum of the elements.

Example

Run this code

#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';
}

Output:

55

See also

apply	applies a function to every element of a valarray (public member function)
accumulate	sums up a range of elements (function template)