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

[Helmut Kudrnovsky]

hi,

I've done some quick diff test with results of winGRASS7 32bit vs 64bit in
the NC sample dataset:

r.slope.aspect: 

r.mapcalc aspect32bit - aspect64bit => 0
r.mapcalc slope32bit - slope64bit => 0

they seems to be identical.

r.watershed:

r.mapcalc accum32bit - accum64bit

r.info map=diffaccum at accumtest                                                  

+----------------------------------------------------------------------------+
 | Map:      diffaccum at accumtest            Date: Wed Dec 30 11:50:35 2015   
|
 | Mapset:   accumtest                      Login of Creator: myricaria      
|
 | Location: nc_spm_08_grass7                                                
|
 | DataBase: C:\grassdata                                                    
|
 | Title:     ( diffaccum )                                                  
|
 | Timestamp: none                                                           
|

|----------------------------------------------------------------------------|
 |                                                                           
|
 |   Type of Map:  raster               Number of Categories: 0              
|
 |   Data Type:    DCELL                                                     
|
 |   Rows:         1350                                                      
|
 |   Columns:      1500                                                      
|
 |   Total Cells:  2025000                                                   
|
 |        Projection: Lambert Conformal Conic                                
|
 |            N:     228500    S:     215000   Res:    10                    
|
 |            E:     645000    W:     630000   Res:    10                    
|
 |   Range of data:    min = -8.14907252788544e-010  max =
4.65661287307739e- |
 |                                                                           
|
 |   Data Description:                                                       
|
 |    generated by r.mapcalc                                                 
|
 |                                                                           
|
 |   Comments:                                                               
|
 |    accum32bit at accumtest - accum64bit at accumtest                            
|
 |                                                                           
|

+----------------------------------------------------------------------------+

the results between 32bit and 64bit winGRASS seems not to be identical.

any ideas if they should be identical?



-----
best regards
Helmut
--
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