Support of Decimal64 type wanted

[plokhotnyuk]

Is your feature request related to a problem?

Our services are full of financial data that require 16-digit precision operations and compact 64-bit representation, so Decimal64 fits perfectly for that.

Describe the solution you'd like.

Add decimal64 type support, use efficient implementation for arithmetical operations and conversions to other types like here: https://github.com/epam/DFP

Describe alternatives you've considered.

No response

Full Name:

Andriy Plokhotnyuk

Affiliation:

AP ITS

Additional context

No response