On Thu, 6 Jan 2005, Bill Northcott wrote:
As I explained in the last message:In R2.0 ISNAN() is defined using isnan thus (isnan(x)!=0). isnan() is in math.h and this works perfectly for C code. However, in C++ the header cmath (included by iostream and others) undefs isnan(). So on platforms for which isnan() is a macro, the code breaks at compile time with 'isnan() undeclared'.
I believe (with a little Googling) the suggested C++ approach is to use std::isnan if <cmath> is included.
-thomas
Thomas Lumley Assoc. Professor, Biostatistics [EMAIL PROTECTED] University of Washington, Seattle
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