http://d.puremagic.com/issues/show_bug.cgi?id=3202

           Summary: std.math.pow cause dead loop
           Product: D
           Version: 2.031
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: P1
         Component: Phobos
        AssignedTo: nobody@puremagic.com
        ReportedBy: rinick@gmail.com


the case is:

   pow(1.01, int.min);

because int.min == -int.min


Maybe the while loop should be put into pow(F, uint) instead of pow(F, int)
like the following:

pure nothrow F pow(F)(F x, int n)
{
   if (n < 0)
   {
      return 1 / pow(x, cast(uint)(-n));
   }
   return pow(x, cast(uint)n);
}

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--- Comment #1 from ZHOU Zhenyu <rinick@gmail.com>  2009-07-21 22:54:26 PDT ---
(In reply to comment #0)
> Maybe the while loop should be put into pow(F, uint) instead of pow(F, int)
> like the following:

what about:

pure nothrow F pow(F)(F x, int n) if (isFloatingPoint!(F))
{
   if (n < 0)
      return 1 / pow(x, cast(uint)(-n));
   else
      return pow(x, cast(uint)n);
}

pure nothrow F pow(F)(F x, uint n) // allow integer if n is uint
{
  ...
}

This also solve #2973

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Andrei Alexandrescu <andrei@metalanguage.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |andrei@metalanguage.com
         AssignedTo|nobody@puremagic.com        |andrei@metalanguage.com


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Lars T. Kyllingstad <bugzilla@kyllingen.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@kyllingen.net
         AssignedTo|andrei@metalanguage.com     |bugzilla@kyllingen.net


--- Comment #2 from Lars T. Kyllingstad <bugzilla@kyllingen.net> 2010-06-22 00:14:42 PDT ---
http://www.dsource.org/projects/phobos/changeset/1677

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ZY Zhou <rinick@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


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--- Comment #3 from Lars T. Kyllingstad <bugzilla@kyllingen.net> 2010-08-11 02:43:44 PDT ---
Fixed DMD 2.048

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