Martin Spott writes:
> 
> "I don't understand why FreeBSD doesn't see isnan() after including math.h
> but it doesn't.  Trying the apple approach to fixing isnan results in an
> infinite loop (making me wonder what happens on OSX?)  This is an alternative
> approach to checking isnan() on freebsd ..."

according to this
http://www.delorie.com/gnu/docs/glibc/libc_404.html

isnan() is only defined for BSD for ISO C99

alternative BSD funcs discussed at link above

also see bottom of this page 
http://naranja.umh.es/~atg/B1098370398/C2036966428/

Norman

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