At 2001-04-09 10:29, Dylan Thurston wrote:

I hadn't thought about doing rational arithmetic with GCDs. Might be nice.

Herewith my attempt. I can't test it though, it runs afoul of one of the many bugs in Hugs' type-extension handling, and I haven't been able to run GHC on my MacOS X box. -- Ashley Yakeley, Seattle WA