Re: [HACKERS] backend/utils/adt/float.c uses non-existent NAN value

> >
> > Seems at some point someone decided not to be machine-independent in
> > backend/utils/adt/float.c
> >
> > Redhat 5.2 system with gcc 2.8.1 doesn't define NAN unless _GNU_SOURCE is
> > defined first. Although include/utils/dt.h *does* check for NAN (and HUGE_VAL)
> > before using them, the float.c doesn't.
> >
> > What happened?
>
> Don't know exactly - but
>
> the new NUMERIC data type started recently a discussion about
> NAN, because I tried to be able to convert NAN from/to
> float's, and that started some trouble. I'm not sure how this
> went into adt/float.c. At least I think we should fix all the
> NAN handling for v6.5.
>

I fixed that. Added the NAN define from numeric.c.

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