Re: How to test for "integer"?

[Keith Goodman]

I don't know of a built-in isint function.

But you can make your own. I'd use floor(x)==x since floor is a
built-in function but mod isn't. Plus it won't crash on complex
numbers. Either way I don't think you need abs.

On 5/15/05, Robert A. Macy <address@hidden> wrote:
> Group,
> 
> Is there a direct test for integer?
> 
> I've been using
> 
> if (abs(mod(n,1))==0)
>   msg="n is an integer"
> endif
> 
> which works great.
> 
> I looked through the octave manual and didn't recognize an
> "integer" test.
> 
>                - Robert -
> 
> 
> 
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Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
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