
Re: How to avoid wrong answers in simple arithmetic expressions.
Posted:
Jan 20, 2013 5:28 AM


"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message <kdgfie$of7$1@newscl01ah.mathworks.com>... > "SK " <modysk@hotmail.com> wrote in message <kdgb24$a74$1@newscl01ah.mathworks.com>... > > > > > 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. > > Bruno
Note that I said _integers_ within some range.
Best Regards.

