If i remember correctly the Giants in Skyrim were supposed to be neutral... Something about a treaty between humans and giants idk...

Anyways in skyrim every time i come up to a giant he sends me flying through the air with his giant club

They are neutral, so long as you don't get too close or mess with their mammoth's.

oh i see. I guess they didn't enjoy me invading their personal space

^What he said, they are not enemies but they are also not allies.

Yeah, just stay away from their camps and you'll be allright.

As they are giants they have large personal spaces. Recommending putting lots of perk points in stealth and archery before giant diplomacy )

There might be something in that treaty that says Giants have the right
to bludgeon anyone foolish enough to invade their camp.

Anyways, the Giants do give a warning before they attack (they brandish
their clubs). Proper courteous of them, if you ask me.

That warning should get most people's attention.
But when they stomp the ground, only the foolish or ill-intended continue to close the distance.

Me? I give them a wide berth. They're not my enemy.

Normal people call the guards when you're trespassing. Giants take a simpler approach.

You can walk up to them and do whatever around them if you find them traversing the wide open plains, but if you find them at their camp they're hostile.