location of includes?

Hello,
I’m trying to find the location of the file interrupt.h

My sketch has the following in it:

#include <avr/interrupt.h>

I’ve poked around in /Applications/Arduino.app/Contents/Java but have had no luck

thanks

On my Windows PC there are multiple files named interrupt.h but I suspect that the one you are looking for is at
C:\Program Files (x86)\Arduino\1-8-5\hardware\tools\avr\avr\include\avr\interrupt.h

UKHeliBob:
On my Windows PC there are multiple files named interrupt.h but I suspect that the one you are looking for is at
C:\Program Files (x86)\Arduino\1-8-5\hardware\tools\avr\avr\include\avr\interrupt.h

That did it, thanks!