Date: Jan 20, 2013 5:28 AM
Subject: Re: How to avoid wrong answers in simple arithmetic expressions.
"Bruno Luong" <email@example.com> wrote in message <firstname.lastname@example.org>...
> "SK " <email@example.com> wrote in message <firstname.lastname@example.org>...
> > OK. I got it (after some embarrassment). The IEEE 754 format description on Wikipedia was a bit confusing - all those negative powers of 2! It really boils down to - if a number can be represented as a sum of powers of 2, then it has an exact representation - so all integers (within some range) will have an exact representation.
> Not exactly. 1 + 2^(-100) cannot be represented by IEEE 754.
Note that I said _integers_ within some range.