[Ffmpeg-devel] [RFC] VC1 Transform in AltiVec

[Rich Felker]

On Wed, Jul 19, 2006 at 07:23:59AM +0300, Kostya wrote:
> > > +#define TRANSPOSE8(a,b,c,d,e,f,g,h) \
> > > +do { \
> > > +    __typeof__(a)  _A1, _B1, _C1, _D1, _E1, _F1, _G1, _H1; \
> > > +    __typeof__(a)  _A2, _B2, _C2, _D2, _E2, _F2, _G2, _H2; \
> > 
> > stuff beginning with _ is reserved in C ...
>  
> As I stated that's not my code. And looks like it is used to declare variables with the same type
> as macro arguments.

IMO if we're going to use this hideous "typeof" gcc extension, we
should just use "typeof" rather than "__typeof__". The latter is meant
for glibc headers' internal use so that they don't conclict with the
application's namespace, not for general use in application code.

On the other hand it seems quite stupid to use an extension for this.
We could juse instead do:

#define TRANSPOSE8(type,a,b,c,d,e,f,g,h) \
do { \
    type  _A1, _B1, _C1, _D1, _E1, _F1, _G1, _H1; \
...

Rich