[PATCH] Fix math transformation on targets without c99 math functions

[Jakub Jelinek]

On Thu, Dec 31, 2015 at 12:52:21PM -0500, John David Anglin wrote:
> On 2015-12-30, at 6:46 PM, Joseph Myers wrote:
> 
> > On Mon, 28 Dec 2015, John David Anglin wrote:
> > 
> >> The attach change fixes PR middle-end/68743 on hppa*-*-hpux*.  In compiling 
> >> c99_functions.c in libgfortran, floor ((double)x) was transformed to floorf(x) but
> >> floorf is not available on hppa*-*-hpux*.  The change simply adds a libc_has_function
> >> check to prevent the transformation.
> > 
> > These are real functions, not complex.  I think you want to use 
> > function_c99_misc, not function_c99_complex.
> 
> 
> The composition of the classes isn't documented, so I wasn't sure which functions where in
> each class.  Thought function_c99_math_complex might have been math and complex.
> 
> In any case, we have no_c99_libc_has_function on hpux and everything on linux.  So, I
> don't think testing with function_c99_misc on hppa will show any difference.
> 
> Okay with function_c99_misc?

Ok (but please make sure to adjust ChangeLog too).

	Jakub