[quote user="Julio P��rez Arranz"]I have Compiler C2000 v6.1.3. The "math.h" in this version has no isnan() isinf() functions or macros.[/quote]
The 6.2.x series of releases supports the isnan and isinf macros. The latest version available now is 6.2.7. Is it practical for you to upgrade your compiler?
Thanks and regards,
-George