Function serialize_decimal_as_str 

pub fn serialize_decimal_as_str<S>(
    decimal: &Decimal,
    serializer: S,
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where
    S: Serializer,

Serializes a Decimal as a string (lossless, no scientific notation).

Errors

Returns an error if serialization fails.