isNaN             169 core/MathUtils.cpp bool MathUtils::isNaN(double x)
isNaN             223 core/MathUtils.cpp bool MathUtils::isNaN(double value)
isNaN             842 core/Toplevel.cpp bool Toplevel::isNaN(ScriptObject*, double n)
isNaN             124 utils/avmc/avmc.cpp bool MathUtils::isNaN(double d)