[PD-dev] devel_0_38 SIMD

[Thomas Grill]

Hi Tim, hi all,
i have been having some troubles compiling devel_0_38 with the new SIMD
extensions. Now that it works for OSX it doesn't work for MSVC. It also
doesn't work if compiled with DONTUSESIMD. It seems that it only works very
well with gcc under linux and SIMD enabled. Ok, in principle it would be
easy to just throw in some function prototypes etc., but i think that won't
be as elegant as it should be.
Originally, when i introduced the SIMD code into PD the idea was that there
is this central m_simd.h file, where depending on some compilation
parameters either m_simd_def.h (no SIMD support) or m_simd_*.h
(platform-dependant files) are included.
All the necessary prototypes for SIMD functions should also be in these
m_simd_* headers, not in the PD files using them and the platform-dependant
SIMD implementation files should be symmetrical so that it's easy to
maintain cross-platformity without having to test for all platforms all the
time.
Now, trying to fix things, it seems that i have lost orientation where to
search for function declarations and implementations, because i miss the
symmetry between the several implementations. It seems to have gone lost
mostly because there are new functions that don't fit very well into the
scheme. Tim, i think it's easy for you to re-introduce some order, and maybe
also some lines of associated documentation, so that others can also find
things if necessary.

best greetings,
Thomas