On Sat, 23 Jan 2010 14:19:23 +0100, Jonas Maebe <jonas.ma...@elis.ugent.be> wrote: >> Does anyone know why the code fails to work? > > Not really, but at least the following is will be evaluated differently on > 32 and 64 bit platforms: > > [...] > v is a byte, i is a longint (integer in Delphi mode). Outsize is an int64. > > On a 32 bit platform, "v shl (8 * i)" will be evaluated as 32 bit. This > means that the upper 32 bits of the result of that expression will be > discarded before the "or" operation is performed. On a 64 bit platform, > that entire expression will be evaluated using 64 bit arithmetic. > Hi! Maybe the is the reason why it fails, cause the compression does not do operations like this. How do I have to change the expression to make it work on 32bit and 64bit? Thanks! Matthias
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