mxGetNaN (C and Fortran)

Value of NaN (Not-a-Number)

C Syntax

#include "matrix.h"
double mxGetNaN(void);

Fortran Syntax

real*8 mxGetNaN

Returns

Value of NaN (Not-a-Number) on your system

Description

Call mxGetNaN to return the value of NaN for your system. NaN is the IEEE^® arithmetic representation for Not-a-Number. Certain mathematical operations return NaN as a result, for example,

• 0.0/0.0

• Inf-Inf

Your system specifies the value of Not-a-Number. You cannot modify it.

C Examples

See these examples in matlabroot/extern/examples/mx:

• mxgetinf.c