[Bug c/113455] ROUNDING: IEEE Standard: Missing decimal rounding mode 'nearest, ties away from zero' for decimalxxx datatypes.

["newbie-02 at gmx dot de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113455

--- Comment #2 from newbie-02 <newbie-02 at gmx dot de> ---
(In reply to Joseph S. Myers from comment #1)  

hello and thank you very much!!,  
> The decimal rounding mode is set with fe_dec_setround.  

found in my directories that I already had experimented with that,  
a distinct include of libdfp/dfp/fenv.h made progress,  
but also with `fe_dec_setround(FE_DEC_TONEARESTFROMZERO)`,  
successful as `if ((r = fe_dec_getround()) == -1)` produces '4',  
the implicit rounding for the addition stays with 'to even'.  

:-(    will continue research tomorrow.  

the strategic discussion is above my experience, from POV  
wanting an alternative for people fed up with bin-FP imprecision  
it would be:  
- good if it works,  
- is easy to find,  
- wouldn't require much 'info gathering' and configuration effort,