There are several options for physical units of that sort in Haskell: https://wiki.haskell.org/Physical_units https://wiki.haskell.org/Physical_units. I remembe

There are several options for physical units of that sort in Haskell: https://wiki.haskell.org/Physical_units https://wiki.haskell.org/Physical_units. I remember being fairly satisfied with unittyped: https://bitbucket.org/xnyhps/haskell-unittyped/ https://bitbucket.org/xnyhps/haskell-unittyped/. Though, enabled by GHC 7.8, units may now be nicer: https://github.com/goldfirere/units https://github.com/goldfirere/units