[cfp-interest 3609] Re: Rounding Mode

[Damian McGuckin]

On Sun, 21 Sep 2025, David Hough CFP wrote:

> Rounding precision is a mode on extended precision implementations like 
> x87 and mc6888x which allowed extended precision operations to round 
> more like double or single precision.  It's helpful at times when 
> computing elementary functions in extended precision, then rounding to 
> final precision. So it needs a uniform higher level language syntax. As 
> I recall, in C it is a no-op on platforms that don't offer it.

Thanks David. The syntax is not mentioned.

The major question is about the direction which is called either

 	"rounding direction mode" or "rounding mode"

The former is used 40+ times and the latter used slightly more often and 
they are used to mean the same thing.

I leave it for others to decision on which of the two is best but I prefer 
to use 2 words rather than 3 words any day.

Then we can also use "rounding precision" in the three places it occurs
for the precision because it is a precision and not a mode.

Thanks - Damian