[FFmpeg-devel] [PATCH] AAC: type puns for 16 bit floating point rounding
Tue Dec 9 12:02:23 CET 2008
Robert Swain wrote:
> 2008/12/5 M?ns Rullg?rd <mans at mansr.com>:
>> Uoti Urpala <uoti.urpala at pp1.inet.fi> writes:
> [lots of arguing]
> So, where are we with this?
The type punning using unions is defined by the latest version of the C
spec, and it seems to work with most compilers.
Two questions remain to be answered for each platform:
1. Does it use IEEE754 floating-point format?
2. Is the hack faster than using normal float operations?
We know 1 to be true for everything we're ever likely to encounter.
2 needs to be tested.
mans at mansr.com
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