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From: Ike Naar <ike@sverige.freeshell.org>
Newsgroups: comp.programming
Subject: Re: calculating the power of a fixed point
Date: Fri, 23 Sep 2011 22:46:44 +0000 (UTC)
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On 2011-09-23, Robin Vowels <robin.vowels@gmail.com> wrote:
> On Sep 23, 9:52?pm, Ike Naar <i...@sverige.freeshell.org> wrote:
>> On 2011-09-23, Robin Vowels <robin.vow...@gmail.com> wrote:
>>
>> > On Sep 20, 10:36?pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
>> > wrote:
>> >> Fixed-point arithmetic is exact.
>>
>> > Not really. ?Addition, subtraction, and multiplication are.
>> > However, division is not.
>>
>> What is the exact result of 1.6 * 1.6 (one decimal place) ?
>
> The exact result is 2.56.  Why would you drop one digit?

Isn't that what fixed-point arithmetic is about? Having a fixed
number of digits after the decimal (or binary) point?