From: Jacques-Henri Jourdan <jacques-henri.jourdan@normalesup.org>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Approximations when converting from string to float
Date: Tue, 25 Oct 2016 12:21:14 +0200 [thread overview]
Message-ID: <12299aa2-d7d2-52b8-54fc-b81913b3b966@normalesup.org> (raw)
In-Reply-To: <CAFxmOcR4uoy174N3HzGO6=NRvrQGbuse_RAwmjxqJD5v5zQ6tg@mail.gmail.com>
Hi,
I would say that the easiest is to use the ZArith library: you convert
from tring to Z.t, then from Z.t to float.
By doing so,you get only an approximation, but you do not know whether
this is a lower or upper rounding. You need then to convert back to Z.t
and compare with the original number. Depending on whether this is a
lower, exact or upper rounding, you can then get your interval by adding
or removing an ulp....
--
JH
On 10/24/2016 04:01 PM, Tung Vu Xuan wrote:
> Hi,
>
> I am having a problem when converting from string to float as
> described in this question:
> http://stackoverflow.com/questions/40219852/string-to-float-in-ocaml-over-and-under-approximation.
>
> Your helps are mostly appreciated! Thanks a lot!
>
> Best Regards,
> Tung
next prev parent reply other threads:[~2016-10-25 10:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-24 14:01 Tung Vu Xuan
2016-10-25 10:21 ` Jacques-Henri Jourdan [this message]
2016-10-25 11:20 ` Soegtrop, Michael
2016-10-25 11:24 ` Soegtrop, Michael
2016-10-25 14:19 ` Jacques-Henri Jourdan
2016-10-25 15:28 ` Soegtrop, Michael
2016-10-25 16:58 ` Tung Vu Xuan
2016-10-25 17:04 ` Jacques-Henri Jourdan
2016-10-25 18:07 ` Xavier Leroy
2016-10-26 9:38 ` Tung Vu Xuan
2016-10-26 8:08 ` Soegtrop, Michael
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