How do I create negative numbers?

[akrzemi1]

The docs aren't that clear on how to create negative numbers.

There is a declaration:

template <typename Integral1, typename Integral2>
constexpr decimal128(Integral1 coeff, Integral2 exp, bool sign = false) noexcept;

sign looks like it, but it is still not clear if sign == true means "positive" or "negative". Maybe name is_negative would be more self-explanatory.

But even then, I can also do it with coeff:

decimal128 d {-1, 1};

But then I wonder whether the following is positive or negative:

decimal128 d {-1, 1, true};

And then I wonder whether

decimal128 d {-1, 1, false};

has the opposite meaning or not.

This constructor requires more attention in the docs.