fn signed_parse_units(value: &NumberWithBase) -> Result<ParseUnits>Expand description
Converts a parsed, possibly-negative NumberWithBase into a ParseUnits, preserving
its sign.
NumberWithBase::number() returns the two’s-complement bits of a negative value modulo
2^256, which is a wider range than I256 can represent (magnitudes up to 2^255 only).
A magnitude beyond that range would silently reinterpret as a small positive I256
if constructed unconditionally via I256::from_raw – reject it instead.