Re: native complex numbers - testers wanted

[Asko Kauppi <askok@...>]

Using <complex.h> now.  :)

Only to realize, _also_ that (on OS X, gcc 4.0.1) actually generates  
the _same_ inaccuracy... :&

-asko


David Jones kirjoitti 8.9.2006 kello 10.56:

> On 7 Sep 2006, at 21:57, Asko Kauppi wrote:
>
> > Thanks:  was simply using the wrong formulas for pow.
> >
> > Now, it still gives innacurate answers, but close to -1:
> >
> >   Lua 5.1.1  Copyright (C) 1994-2006 Lua.org, PUC-Rio (complex)
> >   > a=1i
> >   > =a^2
> >   -1+1.2246467991474e-16i
> >
> > Should something be done about this (like handling real powers  
> > separately)?
>
> You mean you're not using <complex.h> and therefore cpow?  I would  
> expect any respectable cpow to handle integer y separately.
>
> And if you're rolling you're own, then yes you should.
>
> drj