On 20 December 2016 at 10:43, Cedric BAIL <cedric.b...@free.fr> wrote:

> On Dec 19, 2016 16:49, "Jean-Philippe André" <j...@videolan.org> wrote:
>
> Hi Cedric,
>
> On 20 December 2016 at 09:40, Cedric BAIL <cedric.b...@free.fr> wrote:
>
> > cedric pushed a commit to branch master.
> >
> > http://git.enlightenment.org/core/efl.git/commit/?id=
> > 7bb229d4be23ffcc4947b453880a5c0f9f7a12c6
> >
> > commit 7bb229d4be23ffcc4947b453880a5c0f9f7a12c6
> > Author: Cedric BAIL <ced...@osg.samsung.com>
> > Date:   Mon Dec 19 12:03:49 2016 -0800
> >
> >     eina: add general purpose function to compar float and double.
> > ---
> >  src/lib/eina/eina_util.h | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> >
> > diff --git a/src/lib/eina/eina_util.h b/src/lib/eina/eina_util.h
> > index c1ea02f..66e0d17 100644
> > --- a/src/lib/eina/eina_util.h
> > +++ b/src/lib/eina/eina_util.h
> > @@ -19,6 +19,8 @@
> >  #ifndef EINA_UTIL_H_
> >  #define EINA_UTIL_H_
> >
> > +#include <float.h>
> > +
> >  /**
> >   * @addtogroup Eina_Tools_Group Tools
> >   *
> > @@ -48,6 +50,24 @@ EAPI const char *eina_environment_home_get(void);
> >  EAPI const char *eina_environment_tmp_get(void);
> >
> >  /**
> > + * @brief Safe comparison of float
> > + * @param a First member to compar
> > + * @param b Second member to compar
> > + *
> > + * @return @c true if two floats match
> > + */
> > +#define EINA_FLT_CMP(a, b) (fabsf((float)a - (float)b) <= FLT_EPSILON)
> > +
> > +/**
> > + * @brief Safe comparison of double
> > + * @param a First member to compar
> > + * @param b Second member to compar
> > + *
> > + * @return @c true if two double match
> > + */
> > +#define EINA_DBL_CMP(a, b) (fabs((double)a - (double)b) <= DBL_EPSILON)
> >
>
> Besides the missing @since tag, I think the names are poorly chosen. I
> would expect a "cmp" function to return -1, 0 or 1 like strcmp().
> How about renaming to _EQ?
>
>
> Sounds indeed like a better idea. Will update tomorrow with it.
>
> Also, do we really need/want the cast?
>
>
> I did think about it, and I think we need, because quite a few time we do
> compare with integer value and that may not give the intended result. I may
> be wrong there, but that was the logic.
>

Yep but then I thought maybe it's better to have the cast be explicit where
the macro is called, rather than implicitely inside the macro.
Anyway not a big deal.

-- 
Jean-Philippe André
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