From:	"deckerben" <bdeck AT lycos DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
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Subject:	Re: wierd math.h error ---isinff, "long"?
Date:	Tue, 10 Jun 2003 21:24:05 +0200
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"deckerben" <bdeck AT lycos DOT co DOT uk> wrote in message
news:3ee62e57$0$16604$9b622d9e AT news DOT freenet DOT de...
>
> "Hans-Bernhard Broeker" <broeker AT physik DOT rwth-aachen DOT de> wrote in message
> news:bc470i$1cb$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE...
> > deckerben <bdeck AT lycos DOT co DOT uk> wrote:
> >
> > > /dev/d/usr/djgpp/include/math.h:148: parse error before "long"
> > > /dev/d/usr/djgpp/include/math.h:149: parse error before "long"
> > > /dev/d/usr/djgpp/include/math.h:150: parse error before "long"
> >
> > > When these lines in math.h look like:
> > > extern int isinff(float);
> > > extern int isnanf(float);
> > > extern int finitef(float);
> >
> > Obviously, there is no occurence of the word "long" in these lines.
>
> That is exactly what I thought, too. Had me wondering....
>
> > Which means some other part of the build process though it as a clever
> > idea to #define something or other to a token sequence containing the
> > word "long".  You'll have to compile one case where this error strikes
>
> Wow... great function... (smiling). Yeah, *someone* did think it would be
> clever, and that someone wasn't the packager :-)
> <snip/>
> # 13 "/dev/d/usr/djgpp/include/ieeefp.h"
> <snip/>
> #define isnanf(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) &&
((*(long
> *)&(x) & 0x007fffffL)!=0000000000L))
>
> #define isinff(x) (((*(long *)&(x) & 0x7f800000L)==0x7f800000L) &&
((*(long
> *)&(x) & 0x007fffffL)==0000000000L))
>
> #define finitef(x) (((*(long *)&(x) & 0x7f800000L)!=0x7f800000L))
> <snip/>
>
> These come from lines 76 - 82 of include/math.h.

DOG IT! I mean't lines 76 - 82 of include/ieeefp.h.

Sorry :-(

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