Re: ✘gpsd .23.2~rc1

[Gary E. Miller]

Yo Hal!

On Mon, 11 Apr 2022 19:13:04 -0700
Hal Murray <halmurray@sonic.net> wrote:

> > I just pushed an scons change that should determine what
> > strerror_r() returns at configure time.   
> 
> Works.

Good.

> I have some hack code that tests the printf rounding.
> I found the change between 26.1199 and 26.1200.
> The rounding looks good to me.
> 
> float
> 26.119949340820312500 26.1199 41d0f5a8
> 26.119951248168945312 26.1200 41d0f5a9

So that step is the smallest possible in a float?  If so, then that
is good.

> double
> 26.119949999999999335 26.1199 403a1eb50b0f27bb
> 26.119950000000002888 26.1200 403a1eb50b0f27bc

That looks good.

Fred's theory is that the rounding error is happening before the
printf().  Somewhere.  Probably related to implicit long doubles.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

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