What is happening here?

[Charles via Digitalmars-d]

On Sunday, 27 December 2015 at 15:10:07 UTC, TheDGuy wrote:
> I don't understand this:
>
> https://www.youtube.com/watch?v=j_VCa-5VeP8&feature=youtu.be
>
> The variable "discriminant" is below zero but it jumps right 
> into the if statement?

The video is private, so we can't see it. I think you wanted 
unlisted. Also you might've wanted the learn forum.