[FFmpeg-devel] [PATCH 1/4] avcodec: add siren audio decoder

[Reimar Döffinger]

On Tue, May 21, 2019 at 04:51:19PM +0200, Moritz Barsnick wrote:
> (It only matters on hardware which requires double precision software
> emulation, but if explicitly using float, make sure to stick to float.)

It's a best practice regardless of emulation or not.
Even x86 has for example much better division performance
for float than double, and where auto-parallelization might
be possible it can make an even larger speed difference.
Just remembering the appropriate suffix is usually simpler
than thinking whether it might be performance-relevant or not.