On 21 Mar 2009, at 10:22, Søren Hauberg wrote:

> Hi All
>
> I just noticed that our implementation of the Heaviside function [1]  
> in
> the 'specfun' package returns NaN at zero. Is that really the best  
> thing
> to do? This is really a definition issue, but isn't it more common to
> let
>
>  H (0) = 0.5
>
> ? We could possibly add an optional input argument that sets the value
> of H (0).
>
> Thoughts?
>
> Søren
>
> [1]
> http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/main/specfun/inst/heaviside.m?revision=HEAD&content-type=text/plain


I also think this behaviour is strange but it is compatible...
 >> version
ans =
7.5.0.338 (R2007b)
 >> heaviside(0)
ans =
   NaN

c.
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