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(lemmy.ml)
Post funny things about programming here! (Or just rant about your favourite programming language.)
I've been staring at it for 10 minutes and I'm still not convinced it works.
Simple, really. Abs(x-y) is the difference between the two numbers, absolute, so positive value. So, adding abs(x-y) to the smaller of the two numbers turns it into the bigger number. Plus the bigger number, now you have 2 times the bigger number