Implementing variadic min / max functions

Question

I\'m implementing variadic min/max functions. A goal is to take advantage of the compile time known number of arguments and perform an unrolled evaluation (

Answer 1

4) Here is one possible way to implement a constexpr version of this function:

#include 
#include 

template 
constexpr typename std::common_type::type vmin(Arg1&& arg1, Arg2&& arg2)
{
    return arg1 < arg2 ? std::forward(arg1) : std::forward(arg2);
}

template 
constexpr typename std::common_type::type vmin(Arg&& arg, Args&&... args)
{
    return vmin(std::forward(arg), vmin(std::forward(args)...));
}

int main()
{
    std::cout << vmin(3, 2, 1, 2, 5) << std::endl;
    std::cout << vmin(3., 1.2, 1.3, 2., 5.2) << std::endl;
}

See live example.

Edit: As @Yakk noted in comments the code std::forward(arg1) < std::forward(arg2) ? std::forward(arg1) : std::forward(arg2) may cause problems in some situations. arg1 < arg2 ? std::forward(arg1) : std::forward(arg2) is more appropriate variant in this case.