Re: why are floats flakey?
Re: why are floats flakey?
- Subject: Re: why are floats flakey?
- From: Darrin Cardani <email@hidden>
- Date: Tue, 25 May 2004 09:12:25 -0500
At 8:53 PM -0700 5/24/04, justin webster <email@hidden> wrote:
why are floats inaccurate?
when can I use them with confidence and what can I use in their place
when I need absolute accuracy?
i'm trying to create a float with a value of 29.97 and I get 29.9699999
like this:
float myFloat = [myTextField floatValue]
where the text field contains the string "29.97df"
You have a bigger problem here, I'm guessing. In addition to the
problems others have mentioned there's the issue that 29.97 is
probably not the value you actually want. I assume you're working
with the NTSC frame rate? If so, you want to use 30001/1001, as 29.97
is not quite the correct value and can lead to drift on longer movies.
Darrin
--
Darrin Cardani - email@hidden
President, Buena Software, Inc.
<
http://www.buena.com/>
Video, Image and Audio Processing Development
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