Jerzy Karczmarczuk
Rationals in Hugs were always a bit obscure. What do you think, what is the Rational form of 2.3 ? (GHCi says 23/10).
The answer is:
2589569785738035 % 1125899906842624
(Old Hugs, Feb. 2001)
I'm afraid the new release won't fix this. Once the release is out the door and things settle down a bit (both in Hugs and in my personal life), I'd like to cleanup the Hugs' internals which have gotten quite confused by layer upon layer of backward compatability code. Practical benefits I hope for are: - Make Float mean 'C float' and Double mean 'C double'. Most of the code is actually in Hugs already but it was disabled because of some long-irrelevant issue involving the foreign function interface. - Implement literal constants using Rational (as described by the standard) instead of using Double (which, of course, usually means 'float'). [This is a separate task from the first which I would be delighted to have someone else do.] Along the way, inessential things like compatability with GreenCard 1 (which died about 5 years ago) will die, people using GreenCard 2 (what most people call 'GreenCard') with Hugs will lose the option of generating Hugs-specific code instead of generating portable FFI code, deprecated types (like Addr) will disappear, etc. -- Alastair