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c#exceptionoverflowexception
Hossein Ebrahimi
Hossein Ebrahimi

Reputation: 822

Does C# throw OverflowException for floating point numbers?

Does C# compiler throw OverflowException for floating-point numeric types?

I tried this to figure it out:

try
{
    checked
    {
        double d = Convert.ToDouble(Math.Pow(double.MaxValue, double.MaxValue));
        Console.WriteLine(d);
    }
}
catch (OverflowException)
{
    throw;
}

and what I saw in the console window was an ∞.

Is ∞ more useful when debugging than an exception?

Upvotes: 0

Views: 836

Answers (2)

Vivek Nuna
Vivek Nuna

Reputation: 1

It is no exception, It is showing you the correct value i.e. INFINITY (∞).

You can check that also by bool isInfinity = double.IsInfinity(d);

It will also return true for bool isInfinity = double.IsInfinity(1.0/0);

I am using .Net core 3.1.

Upvotes: 1

Joni
Joni

Reputation: 111219

No, C# does not have exceptions for floating point operations.

The floating point type has 3 special values: positive infinity, negative infinity, and "not a number".

If the result of a calculation is greater than what can be represented, it overflows without an exception being thrown and the result is positive infinity. ∞ is how it's represented in a string.

Upvotes: 1

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