[Octave-bug-tracker] [bug #60169] error: call of overloaded pow is ambiguous

[Michele]

URL:
  <https://savannah.gnu.org/bugs/?60169>

                 Summary: error: call of overloaded pow is ambiguous
                 Project: GNU Octave
            Submitted by: michele31415
            Submitted on: Thu 04 Mar 2021 04:09:54 PM UTC
                Category: Configuration and Build System
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Build Failure
                  Status: None
             Assigned to: None
         Originator Name: Michele
        Originator Email: 
             Open/Closed: Open
                 Release: 6.2.0
         Discussion Lock: Any
        Operating System: Solaris/SunOS

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Details:

Building 6.2.0 on Solaris 10 SPARC, gmake stops with:

libgui/graphics/Table.cc:88:76: error: call of overloaded 'pow(int, int)' is
ambiguous
         else if (d <= pow (10, precision - 1) && d > pow (10, 1 - precision))
\                                                                           
^
libgui/graphics/Table.cc:104:33: error: call of overloaded 'pow(int, int)' is
ambiguous
         d *= pow (10, -exponent);
                                ^                                             
                    

This is the same problem as in bug #54217: "Build fails with error: call of
overloaded ‘pow(int, int)’ is ambiguous" from two years ago building
4.4.0, though in a different file.  Back then the suggested fix was

-      static const float tiny = pow (2, -50);
+      static const float tiny = octave::math::exp2 (-50.0f);

but it is not clear to me how to proceed in this case.




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