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Egor Skriptunoff <egor.skriptunoff@gmail.com>于2018年7月28日周六 上午4:09写道：
1) 
Arithmetic computations written for Lua 5.1 appear to be 1.25 times slower in Lua 5.4 (compared to Lua 5.1)
(Probably, this happened because of heavy mixing of floats with integers in arithmetic expressions.)


Maybe one of reason is that `Integer modulus` is slower than `Float modulus`, See function `luaV_mod` in lvm.c .