Is Quaternion.Slerp clamped at 0-1?

In fact, any of the Lerp or Slerp functions... if you input a factor outside 0-1 does it clamp? If I have for example:

foo = Quaternion.Slerp( foo, bar, 1.35 );

Will that give me [bar] or will it rotate past [bar]?

Should be clamped. (The documentation mentions it explicitly for almost every Lerp and Slerp method, including Vector3.Slerp.)

But if it isn't, simple enough to clamp it yourself:

foo = Quaternion.Slerp( foo, bar, Mathf.Clamp(1.35, 0.0, 1.0) );