Value of NaN (Not-a-Number)
#include "matrix.h" double mxGetNaN(void);
NaN (Not-a-Number) on your system
mxGetNaN to return the value of
NaN is the IEEE® arithmetic representation
for Not-a-Number. Certain mathematical operations return
a result, for example,
Your system specifies the value of Not-a-Number. You cannot modify it.