Hello, 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?
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