I'd like to clarify the meaning of the structure *no tener que + verb*.

Suppose I say the following:

> 
> No tengo que salir.
> 
> 
> 

Which one of the following does the statement above mean?

> 
> 1. I don't have to leave.
> 2. I have to not leave.
> 
> 
> 

In the first situation, I am expressing that I don't have to leave meaning that I can stay if I wanted to, whereas in the second situation I am expressing that I have to stay.

In general, my question is which part gets negated, the "have to" or the "verb" that comes after?

Thanks.