Faster Lua code

[mosmeh]

Benchmark 1: lua leibniz.lua
  Time (mean ± σ):      6.420 s ±  0.826 s    [User: 6.418 s, System: 0.001 s]
  Range (min … max):    5.244 s …  7.169 s    10 runs

Benchmark 2: lua faster.lua
  Time (mean ± σ):      1.425 s ±  0.018 s    [User: 1.423 s, System: 0.002 s]
  Range (min … max):    1.396 s …  1.461 s    10 runs

Summary
  'lua faster.lua' ran
    4.50 ± 0.58 times faster than 'lua leibniz.lua'

Benchmark 1: luajit leibniz.lua
  Time (mean ± σ):     150.9 ms ±   3.8 ms    [User: 150.3 ms, System: 0.5 ms]
  Range (min … max):   147.4 ms … 159.6 ms    19 runs

Benchmark 2: luajit faster.lua
  Time (mean ± σ):     119.1 ms ±   3.8 ms    [User: 118.3 ms, System: 0.8 ms]
  Range (min … max):   115.6 ms … 131.3 ms    24 runs

Summary
  'luajit faster.lua' ran
    1.27 ± 0.05 times faster than 'luajit leibniz.lua'

[niklas-heer]

Congratulations, it worked for both Lua and LuaJIT 🎉

[niklas-heer]

@mosmeh thank you for your contribution! 👍