Le vendredi 04 novembre 2005 à 20:29 -0600, Federico Mena Quintero a écrit : > On Fri, 2005-11-04 at 20:23 -0500, Behdad Esfahbod wrote: > > +#define IS(Type, Class) (((guint)1 << (Type)) & (Class) ? > > 1 : 0) > > +#define OR(Type, Rest) (((guint)1 << (Type)) | (Rest)) impressive ! i'm sad that gcc doesn't do it by itself. Maybe a bug should be filled because this kind of optimization is great. Having a look at assembly ... instructions : pango | behad ISDIGIT 5 | 5 ISALPHA 13 | 4 ISMARK 9 | 4 branching instructions : pango | behad ISDIGIT 0 | 0 ISALPHA 4 | 0 ISMARK 2 | 0 amazing :) -- Benoît Dejean <benoit placenet org>
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