Joerg Guenther wrote: > > Hi > > 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? Looking more carefully in the man pages (thanks Olivier), we read: isinf() and isinff() are not specified by any standard, but isinff() is named in accordance with the conventions specified in the "Future Library Directions" section of the ANSI C standard. Same for isnam Rene Brun
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