Re: A12-140 Question about round()

Karim Belabas on Mon, 15 Jun 2009 18:29:18 +0200

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Re: A12-140 Question about round()

To: Pari Users <pari-users@list.cr.yp.to>
Subject: Re: A12-140 Question about round()
From: "Karim Belabas" <Karim.Belabas@math.u-bordeaux1.fr>
Date: Mon, 15 Jun 2009 18:12:43 +0200
Delivery-date: Mon, 15 Jun 2009 18:29:18 +0200
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* Kurt Foster [2009-06-15 17:55]:
> It occurred to me to wonder what round() did when the input has fractional 
> part == 1/2.  Some examples indicated that if N is an integer,
>
> round(N + 1/2) == ceil(N + 1/2).
>
> Is this generally the case?

The documentation (??round) states

  "(rounding to + oo in case of ties)"

so your guess is right.

Cheers,

    K.B.
--
Karim Belabas, IMB (UMR 5251)  Tel: (+33) (0)5 40 00 26 17
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`

References:
- A12-140 Question about round()
  - From: Kurt Foster <drsardonicus@earthlink.net>

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