Get rid of sign bit?

[oxinabox]

From here
#42 (comment)

# Numerical value: (-1)^s * c * 10^q
struct Decimal <: AbstractFloat
    s::Bool  # sign can be 0 (+) or 1 (-)
    c::BigInt   # coefficient (significand), must be non-negative
    q::Int  # exponent
end

It doesn't seem to me like s serves any purpose that couldn;t be rolled in c.
Since BigInts can be negative or possitive.

[jmkuhn]

If you want to be able to distinguish -0.0 from 0.0 keeping sign separate makes sense.

[barucden]

I also thought that the sign could be moved into the coefficient. However, after re-implementing a few operations, I must say that it is quite convenient that the coefficient is always non-negative and that the sign is a separate field. What John said is also true.

The only advantage I see in removing the field is less memory consumption. But given that this package is not intended for memory-constrained applications (and after all, one bool is negligible compared to the huge BigInts that are commonly expected), I don't think it's relevant. Because of that, I'll take the liberty of closing this issue.