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Re: Interesting Rant [message #51351 is a reply to message #51314]

Thu, 16 November 2006 17:00

Steve Eddins
Messages: 9
Registered: July 2001

Junior Member

Nigel Wade wrote:
[snip]
>> In MATLAB, both 7/2 and 7/2. evaluate to 3.5 (displayed as
>> 3.5000 by default).
>
> MATLAB defaults to using double precision for all variables. As a corollary to
> the IDL "problem" of 7/2, try the same integer calculation in MATLAB to see how
> useful the opposite camp can be:
>
>>> int16(7)/int16(2)
>
> That one rather annoyed me when MATLAB first introduced non-double matrices.
> After I spent several days reprogramming a MATLAB to C interface so it returned
> integer matrices for integer data I discovered just how comprehensive their
> support of non-double data types was.
>
>
> For those of you who don't have access to MATLAB, the result of the MATLAB
> integer division is:
>
> ??? Error using ==> /
> Function '/' is not defined for values of class 'int16'.
>
> I wonder how much that would annoy our CS major ranter?

Those who have access to MATLAB 7.0 (June 2004) or later would get this:

>> int16(7) / int16(2)
ans =
4

(MATLAB rounds the fractional part instead of truncating it.)

--
Steve Eddins
http://blogs.mathworks.com/steve

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[Message index]

		Interesting Rant By: David Fanning on Tue, 14 November 2006 09:40
		Re: Interesting Rant By: Nigel Wade on Fri, 17 November 2006 05:00
		Re: Interesting Rant By: Steve Eddins on Thu, 16 November 2006 17:00
		Re: Interesting Rant By: greg michael on Thu, 16 November 2006 09:35
		Re: Interesting Rant By: JD Smith on Fri, 17 November 2006 11:44
		Re: Interesting Rant By: Nigel Wade on Thu, 16 November 2006 01:51
		Re: Interesting Rant By: James Kuyper on Wed, 15 November 2006 15:55
		Re: Interesting Rant By: Mike[2] on Wed, 15 November 2006 13:21
		Re: Interesting Rant By: news.qwest.net on Wed, 15 November 2006 11:36
		Re: Interesting Rant By: Foldy Lajos on Wed, 15 November 2006 12:38
		Re: Interesting Rant By: gknoke on Wed, 15 November 2006 12:13
		Re: Interesting Rant By: Richard Edgar on Wed, 15 November 2006 10:31

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