Messages in this thread | | | Date | Thu, 16 Jan 2014 18:24:06 +0100 | From | Hannes Frederic Sowa <> | Subject | Re: [PATCH net-next 2/2] reciprocal_divide: correction/update of the algorithm |
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On Thu, Jan 16, 2014 at 10:37:37AM -0600, Christoph Lameter wrote: > On Thu, 16 Jan 2014, Daniel Borkmann wrote: > > > - * or else the performance is slower than a normal divide. > > - */ > > -extern u32 reciprocal_value(u32 B); > > +struct reciprocal_value { > > + u32 m; > > + u8 sh1, sh2; > > +}; > > > > +#define RECIPROCAL_VALUE_RESULT_TO_ZERO ((struct reciprocal_value){.sh1 = 32}) > > > > -static inline u32 reciprocal_divide(u32 A, u32 R) > > +struct reciprocal_value reciprocal_value(u32 d); > > A function that returns a struct? That works? Which gcc versions support > it?
Sure, that works and I actually like it. This is supported by the c standard, but please don't ask me since which one. ;)
Greetings,
Hannes
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