[fpc-pascal] Converting big-endian signed 16bits values to fpc integer

Jeppe Græsdal Johansen jjohan07 at student.aau.dk
Mon Apr 16 00:41:59 CEST 2012

Just use the BEtoN function. That will convert whatever big-endian 
number to your native endian.

I don't know what speed it has, but it sure is elegant :)

Den 16-04-2012 00:38, Giuliano Colla skrev:
> I'm dealing with a large number of data coming from an external device.
> They are big-endian 16 bits signed numbers, which must be converted to 
> integer and to real to perform calculations.
> Besides the obvious solutions of treating them as isolated bytes, 
> multipying by 256 the highest, adding the lower, and oring wit 
> $FFFF0000, or whatever sizeof(Integer) suggests if the result is 
> bigger than 32767, is there a more efficient and elegant way to 
> achieve the result?
> I'm a bit lost on all available data types, and unable to tell apart 
> the ones which are platform specific and the ones which are not, which 
> assignments give the proper result and which do not.
> Any suggestion would be greatly appreciated.
> Giuliano Colla
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