out_float

Christian Helmuth christian.helmuth at genode-labs.com
Tue Jun 19 09:47:31 CEST 2018


Hello Steven,

On Mon, Jun 18, 2018 at 03:33:42PM -0500, Steven Harp wrote:
> I've noticed that sometimes a double value is rendered strangely
> in log output. (Genode 18.05, x86_32)  E.g.
> 
>     unsigned N1 = 3300;
>     unsigned N2 = 5000 - N1;
>     double div1 = N1 / 1000.0;
>     double div2 = N2 / 1000.0;
>     log(N1,"/1000.=",div1,", ",N2,"/1000. =",div2);
> // ...
> 
> [init -> test] 3300/1000.=3.299999, 1700/1000. =1.6a0
> 
> I know the log facility is not the place for fancy math-mode,
> but it would be handy not to have to mentally parse out the
> extraneous "a".  I could file an issue if this is deemed 
> something worth fixing.  Maybe there is a workaround short of
> linking with libc?

I suggest you open an issue on GitHub as from first investigation this
issue seems not easy to fix.

Greets
-- 
Christian Helmuth
Genode Labs

https://www.genode-labs.com/ · https://genode.org/
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