On 10 Jan 2005 05:40:24 -0500, Warp <war### [at] tagpovrayorg> wrote:
> There's no portable way of testing "is this value a NaN?".
Hmm, IIRC there are already some assumptions about features of the compiler
for POV-Ray and isnan() is part of (C99) standard
http://www.opengroup.org/onlinepubs/009695399/functions/isnan.html
ABX
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