Name

operator- function template — Performs subtraction

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 subtraction. It subtracts 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 subtracting two arrays, they must have the same size. The resulting array has the same size as the argument array(s).