C++ variadic sum doubles

main.cpp

#include <iostream>
#include <cstdarg>
#include <limits>

using namespace std;

double myAdd(double a, double b, ...);

int main()
{
    cout << "Summing 10, 1, 2, 3, 4, 5 : " << myAdd(10.0, 1.0, 2.0, 3.0, 4.0, 5.0, numeric_limits<double>::infinity()) << endl;
    cout << "Summing 10, 20 : " << myAdd(10.0, 20.0, numeric_limits<double>::infinity()) << endl;
    return 0;
}

double myAdd(double a, double b, ...){
    double sum{a+b}, current;
    va_list remainingValues;

    va_start(remainingValues, b);
    while ((current = va_arg(remainingValues, double)) != numeric_limits<double>::infinity()){
        sum += current;
    }
    va_end(remainingValues);

    return sum;
}