comparing floating points via "==" or "!="

Alexander Best arundel at freebsd.org
Thu Dec 1 00:05:29 UTC 2011


On Wed Nov 30 11, Alexander Best wrote:
> hi there,
> 
> i played a bit with the gcc -Wfloat-equal warning and noticed that inside
> sys/dev/ath/ath_rate/sample/tx_schedules.h, a lot of comparisons of floating
> points are happening ("=="). is there a better way to deal with this?

i just built GENERIC (incuding all modules) and this is the only place where
direct comparisons of floating points happen. if this can be resolved, i vote
that we add -Wfloat-equal to sys/conf/kern.mk:CWARNFLAGS.

cheers.
alex

> 
> cheers.
> alex


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