[PATCH] Avoid broken powf on hppa*64*-*-hpux*

[Mark Mitchell]

John David Anglin wrote:
> The attached patch seems like the simplest way to fix the failure of
> gfortran.dg/integer_exponentiation_2.f90 at -O1 and above.  As noted
> in the PR, the current powf implementation on 64-bit HP-UX is broken,
> clobbering register %fr12.

This patch is OK.  However:

-#ifndef HAVE_POWF
+#if !defined(HAVE_POWF) || defined(HAVE_BROKEN_POWF)
#define HAVE_POWF 1

should probably conditionalize the setting of HAVE_POWF on
!defined(HAVE_POWF).  Some preprocessors issues warnings about
redefining a macro.

OK with that change.

Thanks,

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713