xkcd #217: e to the pi Minus pi (31 Jan 2007) ( programming.dev )
cross-posted from: programming.dev/post/8653164
Transcript:
Cueball: Hey, check it out: e^π^−π is 19.999099979. That’s weird.
Black Hat: Yeah. That’s how I got kicked out of the ACM in college.
Cueball: …what?Black Hat: During a competition, I told the programmers on our team that e^π^−π was a standard test of floating-point handlers – it would come out to 20 unless they had rounding errors.
Cueball: That’s awful.
Black Hat: Yeah, they dug through half their algorithms looking for the bug before they figured it out.
Hover text:
Also, I hear the 4th root of (9^2^ + 19^2^/22) is pi.
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