[Numpy-discussion] np.longlong casts to int
Pierre Haessig
pierre.haessig@crans....
Mon Feb 27 02:31:13 CST 2012
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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