[GRASS-dev] results in winGRASS7 32bit vs 64bit: should they be identical?

Helmut Kudrnovsky hellik at web.de
Wed Dec 30 03:08:47 PST 2015


>> any ideas if they should be identical?
>
>Testing like this will likely show differences due to CPU precision etc. 

in this quick test it's the same machine, running 32bit and 64bit winGRASS
binaries ...

>The test needs to be implemented in a different way, using an epsilon.
>Essentially, something like this:
>
>if(abs(map_A - map_B) <= 1e-8,... )

thanks for the hint.



-----
best regards
Helmut
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