Consider data types with 32 bits and 64 bits but which are not numbers in the sense that the generic
arithmetic operations cannot be used with them without an explicit conversion. Appropriate type-
specific arithmetic and logical operations could be defined for these types. This would not be especially
difficult to implement in a well-designed Scheme.

Regards,

Alan
--
Dr Alan Watson
Centro de Radioastronomia y Astrofisica UNAM