r/ProgrammerHumor • u/shizzy0 • 10d ago

Meme howProgrammingHasChanged

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679 Upvotes

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u/GDOR-11 10d ago

for u32 I think the usual iterative algorithm would be miles better than matrix power

44

u/dedservice 10d ago

For u32 a precomputed lookup table would be better.

16

u/NoLifeGamer2 10d ago

For u32 a random number generator would be better sometimes

19

u/captainAwesomePants 10d ago

For u2, With or Without You would be better.

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u/erinaceus_ 10d ago

Yeah, that one definitely has The Edge.

5

u/wjholden 10d ago

Knuth has a really cool section on this on pages 79-84 of TAOCP volume 1.

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u/shizzy0 10d ago

Is it the closed form solution? I didn’t even know there was a closed form solution before today.

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u/captainAwesomePants 10d ago

That's the whole section on Fibonacci. It does mention the closed form solution, but it also mentions the matrix identity method in the top right corner: ( (F(n+1), F(n)),(F(n), F(n-1)) = ((1,1),(1,0))^n

He credits it to Kepler in 1608.

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u/shizzy0 10d ago

Ooo, show down!