[GiNaC-devel] New in GiNaC: step function

[Richard B. Kreckel]

Hi, Vladimir

Vladimir Kisil wrote:

>RC> But that appears to be missing the possibiliby of fractional powers.
>
>I am not sure what fractional powers of a negative values should be...
>  
>

For example csgn(x)^(1/2) where it later turns out that x==-1.  It seems 
to me that the rewriting rule you suggested would get that wrong.

Cheers
  -richy.

-- 
Richard B. Kreckel
<http://www.ginac.de/~kreckel/>