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- Subject: [NoW] Inf-phobia of Lua bytecode
- From: Egor Skriptunoff <egor.skriptunoff@...>
- Date: Wed, 10 Jul 2019 22:53:39 +0300
I've noticed that Lua never stores floating point values inf, nan, -0.0 in bytecode (in table of constants).
local x = 5/4 -- constant 1.25 due to constant folding.
local y = 1/0 -- constants 0, 1 and DIV instruction.
local z = -0.0 -- constant 0.0 and UNM instruction.
It seems that Lua intentionally defers possible FP errors until run-time.
Why such approach was implemented?