[GRASS-dev] [GRASS GIS] #2854: results in winGRASS7 32bit vs 64bit: should they be identical?

GRASS GIS trac at osgeo.org
Tue Mar 8 05:07:02 PST 2016


#2854: results in winGRASS7 32bit vs 64bit: should they be identical?
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  Reporter:  hellik  |      Owner:  grass-dev@…
      Type:  defect  |     Status:  new
  Priority:  normal  |  Milestone:  7.0.4
 Component:  Raster  |    Version:  svn-releasebranch70
Resolution:          |   Keywords:
       CPU:  x86-64  |   Platform:  MSWindows 7
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Comment (by glynn):

 Replying to [comment:15 hellik]:

 > some tests shows that some examples in manuals (modules and addons)
 seems not to work due to this issue in winGRASS 7 64-it.
 >
 > what what be a usable solution?

 Fix the examples.

 There are reasons why building for deterministic floating point might be
 worth the performance cost, but examples relying upon 80-bit intermediate
 precision isn't such a reason, IMHO.

 Can you identify the examples in question? Is it just a case of performing
 approximate-equality comparisons with too low a tolerance?

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2854#comment:16>
GRASS GIS <https://grass.osgeo.org>



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