std::valarray<int> v;

std::valarray<int> v0{0, 1, 2};

std::valarray<int> v1{3, 4, 5};

assert(v0.sum() == 3);

assert(v0.min() == 0);

assert(v0.max() == 2);

/*

// == is elementwise equality.

//

// For equality of all elements, do `.min() == true`

{

std::valarray<int> v0{0, 1, 2};

std::valarray<int> v1{0, 2, 2};

assert(((v0 == v1) == std::valarray<bool>{true, false, true}).min());

}

// +, -, *, /, etc are overloaded elementwise.

//

// They are also overloaded for contained data type.

{

assert((v0 + v1 == std::valarray<int>{3, 5, 7}).min());

assert((v0 + 1 == std::valarray<int>{1, 2, 3}).min());

}

// Basic cmath functions are overloaded for valarray elementwise.

{

assert((abs(std::valarray<int>{-1, 0, 1}) == std::valarray<int>{1, 0, 1}).min());

assert((pow(std::valarray<int>{-2, 0, 2}, 2) == std::valarray<int>{4, 0, 4}).min());

}