implement asnprintf, take 2

[Jeff Johnston]

Eric Blake wrote:
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> According to Jeff Johnston on 4/30/2007 3:28 PM:
>> Hi Eric,
>>
>>   I'm not seeing an explanation for the following code change you have
>> made in vfprintf.c:
>>
>> @@ -1247,13 +1201,13 @@ number:                 if ((dprec = prec) >= 0)
>>                                 if (_fpvalue == 0) {
>>                                         /* kludge for __dtoa
>> irregularity */
>>                                         PRINT ("0", 1);
>> -                                       if (expt < ndig || (flags & ALT)
>> != 0) {
>> +                                       if (ndig || flags & ALT) {
>>                                                 PRINT (decimal_point, 1);
>>                                                 PAD (ndig - 1, zeroes);
>>                                         }
>>
>> Note the check expt < ndig has been replaced with ndig.
> 
> Any other holdups from checking the rest of the patch in once this hunk is
> reverted?
> 

No, please go ahead.  I was looking at a more clever way to do the 
ELIX_LEVEL checking, but it doesn't work.

-- Jeff J.

> - --
> Don't work too hard, make some time for fun as well!
> 
> Eric Blake             ebb9@byu.net
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