[vorbis-dev] optimizing float to int conversions

[dean gaudet]

On Thu, 6 May 2004, Segher Boessenkool wrote:

> >   uint32_t u1 = **(uint32_t **)a;
> >   uint32_t u2 = **(uint32_t **)b;
>
> This isn't valid C (it's violating aliasing rules).

heh... as if that's the least valid C of the code i sent... i'd think the
assumptions about IEEE single precision format and endianness are a bit
more problematic than a few casts :)

but at any rate, those are void *a, void *b ... how am i violating
aliasing rules?  i see i dropped the const qualifier -- that's true of the
existing apsort() code as well though.

fwiw it's not possible for that routine to be inlined, it's called via
indirect function call from qsort().

-dean
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