Carlos, I understand, isnan() is a candidate of future ANSI C library extention but not involved in the standard yet. I want to avoid adding such merginal ones into the body of cint. Cint works with 30+ compiler and CPU combination. It is very easy to damage this level of portability by adding merginal language construct. Good news is that you can embed isnan() into the interpreter easily by using makecint or rootcint. Please read ROOT tutorial or makecint documentatio n in cint source code package. Masaharu Goto >Carlos Lacasta wrote: > > Hello, > > Is it possible to access the isnan function of somthing similar within > an interactive session of root ? > > > >All the ANSI functions in <ctype.h> are available in a Root session. >You must include ctype.h. >Apparently isnam is not a standard function. > >Rene Brun
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