INFINITE_P for Unixware 2.1

[Roger Collins]

I'm trying to port gcc 3.0 to UnixWare 2.1.  Is this fix valid?  If so,
I think it should help svr4 platforms in general.  How do I submit a
patch?

RCS file: /cvs/gcc/gcc/libstdc++-v3/libmath/mathconf.h,v
retrieving revision 1.4
diff -r1.4 mathconf.h
205c205,209
< #     error "We need INFINITE_P"
---
> #     ifdef HUGE_VAL
> #      define INFINITE_P(X) ((X) == HUGE_VAL)
> #     else
> #      error "We need INFINITE_P"
> #     endif

Roger