valarray unary operators

The valarray class provides operators for array manipulation.

valarray<T> operator+() const;

Returns a valarray sum of x+y;

valarray<T> operator-() const;

Returns a valarray result of x-y;

valarray<T> operator~() const;

Returns a valarray result of x~y;

valarray<bool> operator!() const;

Returns a bool valarray of !x;