public static ValidateTarget <double> IsNaN([ValidatedNotNull] this ValidateTarget <double> target, Func <string> getErrorMessage = null)
{
if (!double.IsNaN(target.Value))
{
ExceptionFactory.ThrowException(target.Traits.OutOfRangeExceptionType, getErrorMessage != null ? getErrorMessage.Invoke() : ErrorMessageFactory.ShouldBeNaN(target));
}
return(target);
}