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

> >
> > 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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