MATLAB Application Program Interface
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mexIsNaN    See Also

Determine whether or not a value is NaN (Not-a-Number)

Fortran Syntax

Arguments

value
  The double-precision, floating-point number you are testing.

Returns

true if value is NaN (Not-a-Number); otherwise, returns false.

Description

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

See Also

mexIsFinite, mexIsInf, mexGetInf


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