C++ In a Nutshell

Name

operator+ function template — Performs addition

Synopsis

template<typename T>
valarray<T> operator+(const valarray<T>& a, const valarray<T>& b);
template<typename T>
valarray<T> operator+(const valarray<T>& a, const T& y);
template<typename T>
valarray<T> operator+(const T& x, const valarray<T>& b);

The + operator performs elementwise addition. It adds each x + y, in which x is a scalar or an element of a, and y is a scalar or an element of b. When adding two arrays, they must have the same size. The resulting array has the same size as the argument array(s).