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Message-ID: <20140405014120.GT26358@brightrain.aerifal.cx>
Date: Fri, 4 Apr 2014 21:41:20 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: printf issues
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
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