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Re: Common Lisp solved this problem 20 years ago



Marcin 'Qrczak' Kowalczyk wrote:
Declaring types of identifiers is not enough, because it can't express
the wish to ignore any fixnum overflow and assume that the result will
fit in a fixnum.

Common Lisp get around this by allowing one to specify the range as part of the type. Specifying the range of a flonum can also help with type inferences of things like sqrt.

Regards,

Alan
--
Dr Alan Watson
Centro de Radioastronomía y Astrofísica
Universidad Astronómico Nacional de México