Port breakage (isnan undeclared)

[David Schultz]

On Thu, Mar 20, 2003, Kris Kennaway wrote:
> Several ports have become broken recently with the following error:
> 
> ../../../include/osg/Math:149: `isnan' undeclared (first use this function)
> 
> http://bento.freebsd.org/errorlogs/i386-5-latest/osg-0.9.3.log
> http://bento.freebsd.org/errorlogs/i386-5-latest/gnucap-0.31.log
> http://bento.freebsd.org/errorlogs/i386-5-latest/fractorama-1.6.4.log
> 
> Can someone please investigate?

BTW, this should have been fixed a while ago by updating
libstdc++.  gnucap still fails because it does not include <cmath>
at all; that's a bug in gnucap.