MATLAB Compiler

static bool IsNaN(double x)

Test if value is NaN (Not-a-Number) and returns true if value is NaN.

C++ syntax

• #include "mclcppclass.h"
  bool x = mwArray::IsNaN(1.0);     // Returns false
  

Arguments

Value to test for NaN

Return value

Result of test.

Description

Call mwArray::IsNaN to determine whether or not the value is NaN. NaN is the IEEE arithmetic representation for Not-a-Number. NaN is obtained as a result of mathematically undefined operations such as

• 0.0/0.0
• Inf-Inf

The system understands a family of bit patterns as representing NaN. In other words, NaN is not a single value, rather it is a family of numbers that MATLAB (and other IEEE-compliant applications) use to represent an error condition or missing data.

static bool IsInf(double x)

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