Re: fails to compile with undefined symbol (FP_PLUS_INF)

[Seneca Cunningham <scunning(at)ca(dot)afilias(dot)info>]

Riccardo Mottola wrote:
> our faithful grep tool says:
> bash-2.01$ grep FP_PLUS_INF *
> float.h:#define FP_PLUS_INF       4
> bash-2.01$ grep FP_MINUS_INF *
> float.h:#define FP_MINUS_INF      5

Is there a float.h in your gcc install directory?  Is it #included 
instead of /usr/include/float.h by gcc?  My faithful grep tool says:

-bash-2.05b$ grep FP_MINUS_INF /usr/include/*
/usr/include/float.h:#define FP_MINUS_INF      5
/usr/include/math.h:#define FP_MINUS_INF      5

The float.h that's part of gcc doesn't contain the defines.

> On 3/16/06, Seneca Cunningham <scunning(at)ca(dot)afilias(dot)info> wrote:
> > Riccardo Mottola wrote:
> > > gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
> > > -Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing
> > > -I../../src/port -DFRONTEND -I../../src/include -I/usr/local/include
> > > -c isinf.c -o isinf.o
> > > isinf.c: In function `isinf':
> > > isinf.c:69: error: `FP_PLUS_INF' undeclared (first use in this function)
> > > isinf.c:69: error: (Each undeclared identifier is reported only once
> > > isinf.c:69: error: for each function it appears in.)
> > > isinf.c:71: error: `FP_MINUS_INF' undeclared (first use in this function)
> > > make[2]: *** [isinf.o] Error 1
> > Are FP_PLUS_INF and FP_MINUS_INF defined in float.h or math.h?  The
> > oldest docs that I found were for AIX 4.3 and what I could gather from
> > them is that the code should compile.


--
Seneca Cunningham
scunning(at)ca(dot)afilias(dot)info