Matlab 2011 and 2013 difference -JPEG encoder

2016 4 25
1 个回答
更新时间：2016 4 25
7 次查看（30 天）

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I've downloaded the JPEG encoder from github: https://github.com/pornel/jpeg-compressor The encoder works in Matlab 2011 but works uncorrectly in Matlab 2013 or higher. During analyzing the code step by step in parallel in both version of Matlab I realize that the outputs for bitshift() function are different:
PutBuffer = 2.753693055057920e+14
Matlab 2011:
bitshift(PutBuffer, 8) = 7.444147426295808e+015
Matlab 2013:
bitshift(PutBuffer, 8) = 7.049454220948275e+16
Do You have any idea what is the difference?

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回答（1 个）

Steven Lord
Steven Lord 2016-4-25

0 个投票

See the third row of the table in the "Functionality being removed or changed" item in the Mathematics section of the Release Notes for release R2012b for information about a change to bitshift that I believe is the cause of the behavior you're seeing.

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