[gnuastro-devel] [bug #52014] Arithmetic not accounting for integer blank pixels in binary operators

[Mohammad Akhlaghi]

URL:
  <http://savannah.gnu.org/bugs/?52014>

                 Summary: Arithmetic not accounting for integer blank pixels
in binary operators
                 Project: GNU Astronomy Utilities
            Submitted by: makhlaghi
            Submitted on: Thu 14 Sep 2017 12:38:43 AM CEST
                Category: Arithmetic
                Severity: 3 - Normal
              Item Group: Output not reasonable
                  Status: In Progress
                 Privacy: Public
             Assigned to: makhlaghi
             Open/Closed: Open
         Discussion Lock: Any

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Details:

When binary operations like +, -, * and / are requested, the Arithmetic
library (and thus program) doesn't take into account blank integer values.

For the unsigned integer types (where the blank value is the largest value of
the type), this can give some strange results which can be confusing. A check
is being written to take integer blank values into account.




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