[patch, libgfortran] PR32611 Print sign of negative zero

[FX Coudert]

Hi Jerry, hi Janne, hi all!

> I have provided a compile time flag, -fsign-zero that enables the  
> negative sign on zero values.  This is the default behavior.
> -fno-sign-zero disables the negative sign.  Though probably never  
> used, it is there for anyone who comes upon an old application  
> where it might matter.
> I plan to commit the patch today or tomorrow.  The patch will  
> include fixes for test cases already submitted in the first patch I  
> gave in this thread.

I've sent my previous answer to your patch too fast, and after that  
I've thought some more. I've read your patch, and it's OK to me if  
you add documentation for the new option. Still, I think it would  
really be great to integrate it with my patch changing the ABI for  
passing compile-time options. To be completely honest, I am even more  
interested in merging these patches that I will have intermitent  
(unreliable) internet access during the next few days, and then will  
be offline for a week in the beautiful but desert coutryside of  
Ardèche (returning July 27th).

Thus, I've merged the two patches together and written a basic  
ChangeLog (feel free to edit it). If you are OK with my part of the  
patch, and let 48 hours for others (including Janne) to comment, then  
I think we (and by this "we", I really mean "you" ;-) can safely  
commit the patch, provided you write the little piece of missing  
documentation.

Of course, if you feel that the task I'm imposing upon you is too  
much of a burden, please feel free to commit your patch by itself and  
let me worry later about the ABI change.

Cheers,
FX

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