Single.IsNaN(Single) Method
Definition
Important
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Returns a value that indicates whether the specified value is not a number (NaN).
public:
static bool IsNaN(float f);public:
static bool IsNaN(float f) = System::Numerics::INumberBase<float>::IsNaN;public static bool IsNaN (float f);static member IsNaN : single -> boolPublic Shared Function IsNaN (f As Single) As BooleanParameters
- f
- Single
A single-precision floating-point number.
Returns
true if f evaluates to not a number (NaN); otherwise, false.
Implements
Examples
The following code example demonstrates the IsNaN method.
// This will return true.
if ( Single::IsNaN( 0 / zero ) )
{
Console::WriteLine( "Single::IsNan() can determine whether a value is not-a-number." );
}
// This will return true.
if (Single.IsNaN(0 / zero))
{
Console.WriteLine("Single.IsNan() can determine whether a value is not-a-number.");
}
// This will return true.
if Single.IsNaN(0f / zero) then
printfn "Single.IsNan() can determine whether a value is not-a-number."
' This will return true.
If Single.IsNaN(0 / zero) Then
Console.WriteLine("Single.IsNan() can determine whether a value is not-a-number.")
End If
Remarks
Floating-point operations return NaN to signal that result of the operation is undefined. For example, dividing 0.0 by 0.0 results in NaN.
Note
IsNaN returns false if a Single value is either PositiveInfinity or NegativeInfinity. To test for these values, use the IsInfinity, IsPositiveInfinity, and IsNegativeInfinity methods.
