Quake 3’s Fast Inverse Square Root Function

Note: This is not meant to be an authoritative mathematical description, and I’m pretty late to the party.. I was experimenting with the code, and am scratching an itch. For a far superior description, please look at Chris Lomont’s excellent analysis.
The Infamous Code

x2 = number * 0.5F;
y = number;
i = * ( long [...]

Popularity: 100% [?]

No Slums

Thanks, Google Maps!
Two years ago, my friends and I were looking into apartments near TCNJ. We wanted to check out a candidate in Pennsylvania: it was really easy to get to, it was within 10 minutes of campus, and it was affordable. It met all of our criteria, and the floor plans looked like they [...]

Popularity: 28% [?]

Keyboards are Backwards

Is it possible that an arbitrary decision made decades ago was the wrong one, and we all took it for granted?
Desktop keyboards have had the same fundamental design for decades: QWERTY keypad, computing extensions on the right, and function keys on top. The mouse, for everyone but for a few stubborn lefties, sits to the [...]

Popularity: 34% [?]

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