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

[Helmut Kudrnovsky]

Markus Neteler wrote
> On Wed, Dec 30, 2015 at 12:17 PM, Helmut Kudrnovsky <

> hellik@

> > wrote:
>>>Like this you check if the difference is very small and below the
>>>acceptable threshold.
>>>In C, we use GRASS_EPSILON for these comparisons.
>>
>> now done with GRASS_EPSILON   1.0e-15
>>
>> r.mapcalc expression=difftestepsilon = if( abs( accum32bit at accumtest -
>> accum64bit at accumtest) <= 1.0e-15, 1 , 100 )
>>
>> attached a screenshot of this map
>>
>> accum_diff_wingrass32bitvs64bit.png
>> <http://osgeo-org.1560.x6.nabble.com/file/n5243286/accum_diff_wingrass32bitvs64bit.png>
> 
> Mhh..
> 
> Can you open a ticket with all relevant bits + the difference
> screenshot along with a legend and "r.univar -e" output?

done by https://trac.osgeo.org/grass/ticket/2854



-----
best regards
Helmut
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