I'm not sure why isnan isn't defined for you out of the std namespace
(noting that there are a few mentions of FreeBSD isnan issues on
Google), but hopefully the following will help:
On 30/08/2006, at 5:07 AM, email@hidden wrote:
Looking around it seems the "safer" way to do this is to use the
#define isnan(x) std::isnan(x)
But I don't know anything about anything when it comes to this sort
of thing
in C++ so I do not really know the "correct" way to do this. The
ITK list is
settling on the std::isnan(x) convention. Not sure what track
OpenSceneGraph
took.
The "correct C++" way of doing this is:
#include <cmath>
You can then refer to the isnan function as std::isnan within your
code. Alternatively you can declare:
#include <cmath>
using namespace std;
...and then not have to qualify isnan with std::
Note that the above is not Apple specific.
Cheers,
-C
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