Le 24/02/2012 16:38, Robert Pyle a écrit : >> I wonder what is the use case of these 80 bits numbers apart from what >> > is described as "keeping intermediate results" when performing >> > exponentiation on doubles ? > In AIFF audio files, the sample rate is stored in the Common Chunk as an > 80-bit "extended" floating-point number. The field allocated for this is > exactly 80 bits wide (i.e., no padding to 96 or 128). The 1989 Apple > document defining AIFF can be found at > </www-mmsp.ece.mcgill.ca/documents/audioformats/aiff/Docs/AIFF-1.3.pdf> > > I once wrote my own "save as AIFF" routine and I remember it was a pain to > format the 80-bit extended float. That's an interesting use case ! Thanks for sharing ! -- Pierre
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