Karim BELABAS on Mon, 6 Oct 2003 19:21:46 +0200 (MEST)


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Re: sqrtint(-N) is broken 

On Thu, 25 Sep 2003, Bill Allombert wrote:
> It's look like sqrtint(-N) is broken.
>
> ? sqrtint(-18891990361510463883)
> %1 = -180277404801467*I
> ? sqrtint(18891990361510463883)
> %2 = 4346491730
[...]
> I would prefer sqrtint to fail on negative integers by the way. The
> current behavior just hide wrong input for a not really meaningful
> output, like

OK. I've disallowed it.

  (19:21) gp > sqrtint(-1)
    ***   negative integer in sqrtint.

    Karim.
-- 
Karim Belabas                     Tel: (+33) (0)1 69 15 57 48
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Université Paris-Sud              http://www.math.u-psud.fr/~belabas/
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