As Rene pointed out, these functions are not in ANSI standard. I leave it
un-implemented to maintain portability.
However, you can embed these function by yourself. Please refer to the ROOT
documentation about embeding compiled code.
Masaharu Goto
>I'm trying to use the isinf and isnan functions to check the validity of
>some variables in a root macro. Both functions are not known, even though
>the ROOTSYS environment variable is correctly set (math.h is explicitly
>included in the macro). The TMath class does not contain either function.
>How can I tell root to use the right include files?