[patch, fix] Formatted output of IEEE exceptional values

[Jerry DeLisle]

Jerry DeLisle wrote:
>> Commited to 4.1.  I am getting a regression failure on the 4.0 branch 
>> with this.  I will investigate and report in a bit.
>>
>> Jerry
>>
> There is a previous test case in gfortran.fortran-torture/execute that I 
> failed to see before.  When I tested I did not see the failure on 4.1 
> branch.  (I must have been up too late).  I am bootstrapping the latest 
> after my commit today to see what it is doing.
> 

Well the failure is there on mainline.  My apologies.

> Regardless, it gets down to this.  The test case expects "Infinity" with 
> no sign for both positive and negative infinity when the field width is 
> 8.  This makes no sense, but looking at the related previous pr12839 it 
> talks about F2003 standard.  I don't have a way to to look at F2003.  So 
>  if there is some one who can or knows, please advise.
> 
> In the meantime, I propose changing the test case to expect "    -Inf" 
> and "    +Inf" for a field width of 8 following common sense.
> 
> Is this OK?
> 

Waiting for direction on the test case.

Humbly,

Jerry