From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: printf issues
Date: Fri, 4 Apr 2014 21:41:20 -0400 [thread overview]
Message-ID: <20140405014120.GT26358@brightrain.aerifal.cx> (raw)
In-Reply-To: <CANv4PNmMWBnvh_B25L=R_sv5w9jbCxA+tK8+c9i9qcSgc_ucJw@mail.gmail.com>
On Fri, Apr 04, 2014 at 08:01:00PM -0400, Morten Welinder wrote:
> I *think* the right fix is to add the following "if' statement into
> the rounding loop:
>
> while (*d > 999999999) {
> *d--=0;
> if (d < a) *--a = 0;
> (*d)++;
> }
>
> This also ought to make the d<a test afterwards unnecessary. But
> more tests would be better.
This looks right.
Are you sure a==big is not possible at this point? I *think* it's
impossible, since a==big can only happen if e2<0, in which case
applying the exponent is going to reduce the first slot so that
rounding could never cause it to overflow. Do you agree with this
analysis?
Rich
next prev parent reply other threads:[~2014-04-05 1:41 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-04 13:32 Morten Welinder
2014-04-04 14:12 ` Rich Felker
2014-04-04 14:15 ` Szabolcs Nagy
2014-04-04 14:35 ` Morten Welinder
2014-04-04 14:56 ` Szabolcs Nagy
2014-04-04 15:07 ` Rich Felker
2014-04-04 17:42 ` Morten Welinder
2014-04-04 18:54 ` Szabolcs Nagy
2014-04-04 20:01 ` Morten Welinder
2014-04-04 20:22 ` Morten Welinder
2014-04-04 21:08 ` Rich Felker
2014-04-04 22:50 ` Morten Welinder
2014-04-05 0:01 ` Morten Welinder
2014-04-05 1:41 ` Rich Felker [this message]
2014-04-07 7:29 ` Rich Felker
2014-04-07 13:40 ` Morten Welinder
2014-04-07 14:13 ` Morten Welinder
2014-04-07 15:36 ` Szabolcs Nagy
2014-04-07 18:04 ` Rich Felker
2014-04-04 20:54 ` Szabolcs Nagy
2014-04-04 21:02 ` Rich Felker
2014-04-05 2:08 ` Morten Welinder
2014-04-05 2:50 ` Rich Felker
2014-04-06 23:07 ` Szabolcs Nagy
2014-04-04 21:00 ` Rich Felker
2014-04-04 21:10 ` Szabolcs Nagy
2014-04-04 20:58 ` Rich Felker
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