[Mp4-tech] DCT_SCALE

[ahmad jalal]

Hello experts, 
I m interested in  five dct scales(fix,overflow, 
descale & correctly round, division by 2 and round to integer) . 
These r used to control the floating point . 
I got the source from 
http://afni.nimh.nih.gov/afni/doc/source/mfwddct_8c.html
So i want some information or some paper where i get the information of 
these scales .
Thanks 
Ahmad  
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