Re: Fun With Floats in Quintus

Article View: comp.lang.prolog

Article #1084

#1084

From: Undergrad Projects Lab
Date: Wed, 15 Aug 1990 14:08

21 lines
1414 bytes

In article <3829@bingvaxu.cc.binghamton.edu> vu0310@bingvaxu.cc.binghamton.edu.cc.binghamton.edu (R. Kym Horsell) writes:
>In article <EIVERSON.90Aug13174424@aigyptos.nmsu.edu> eiverson@nmsu.edu (Eric Iverson) writes:
>>
>>How oh how does one represent the numbers 8.1 and 5.4 in Quintus
>>Prolog?  I have tried everything I can think of without any luck.
>
>There are some real numbers which can't be represented in floating
>point. The language (nor implementation) is not at fault. 
>For example, try to write down the representation of 0.1 (decimal) in binary.
>
>-Kym Horsell

This is a common canard in many language implementations.  The latest Scheme
(R**4) has fixed this.

See the 1990 ACM Conference on Program Language Design and Implementation
for papers by Guy L. Steele and William Clinger on how to correctly implement

--
Doug Quale
picard@cs.wisc.edu

Technical Details

Message-ID: <5050@daffy.cs.wisc.edu>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!uwm.edu!uwvax!daffy!gumby.cs.wisc.edu!upl

References: <EIVERSON.90Aug13174424@aigyptos.nmsu.edu> <3829@bingvaxu.cc.binghamton.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!uwm.edu!uwvax!daffy!gumby.cs.wisc.edu!upl
From: upl@gumby.cs.wisc.edu (Undergrad Projects Lab)
Newsgroups: comp.lang.prolog
Subject: Re: Fun With Floats in Quintus
Message-ID: <5050@daffy.cs.wisc.edu>
Date: 15 Aug 90 14:08:13 GMT
References: <EIVERSON.90Aug13174424@aigyptos.nmsu.edu> <3829@bingvaxu.cc.binghamton.edu>
Sender: news@daffy.cs.wisc.edu
Reply-To: quale@picard.cs.wisc.edu
Distribution: comp
Organization: U of Wisconsin CS Dept
Lines: 21

Reply to Parent Message