udunits 2.2.28 C library for units of physical quantities and value-conversion utils

The UDUNITS-2 package provides support for units of physical quantities. Its three main components are:

  1. udunits2lib, a C library for units of physical quantities;

  2. udunits2prog, a utility for obtaining the definition of a unit and for converting numeric values between compatible units; and

  3. an extensive database of units.