[Bug target/19933] Problem with define of HUGE_VAL in math_c99.

["ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From ebotcazou at gcc dot gnu dot org  2005-05-03 11:35 -------
> Use __FLT_MIN__ etc. since <float.h> may not be included.

Of course.

> For a good fix we'll want to add built-in functions compatible with the 
> Solaris header and remove the relevant fixes, and those would test the 
> bits of the representation appropriately, but for now I think __FLT_MIN__ 
> is the right approach and the fixes could more suitably go on 4.0 branch 
> than new built-in functions.

Agreed.  I'll open an enhancement PR for the missing builtins.

> We have a functional __builtin_isnan, there is no need to fix that 
> particular definition.

Right, but it is type-dependent so I guess we have to play the sizeof game.

I'm going to attach a revised version.  Does it look OK to you?  If so, I'll
write tests and run them on SPARC (I don't have access to i386-pc-solaris2.10)
before translating it into a fixinclude patch.

Note that I'd like to have a fix for the 3.4 branch too, and we have neither
__builtin_isnan nor __builtin_signbit on that branch.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19933