Laptop as a wireless adapter?

Can you use a mac laptop as wireless adapter for another PC? I need to connect a pc i have in my room in the internet but my house runs off wireless and I don't have a spare network adapter for the pc, so could i connect my pc to my mac and use the wireless enabled mac as a network adapter?
I know you can run a cable off but unfortunately its too far away from the computer, its in a different room, thanks for the advice though
 
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