fix(std): define math.huge as integer

[lewis6991]

math.floor(math.huge) == math.huge so should define it as an integer.

[taminomara]

Sorry but this is wrong, math.huge is a floating point infinity value, it should not be an integer:

math.tointeger(math.huge) == nil

[lewis6991]

Then please explain math.floor(math.huge) == math.huge

If this isn't true then math.floor doesn't return integers.

[taminomara]

Then please explain math.floor(math.huge) == math.huge

If this isn't true then math.floor doesn't return integers.

It's true, if math.floor gets a floating point number, then it returns a rounded down floating point number. That includes all caveats regarding special values for floating points (inf, nan, etc.) That also holds true for cases when the given value does not fit a 64-bit signed integer:

math.floor(2 ^ 64) -- not an integer: 1.844674407371e+19

So, yes, technically math.floor should return a number.

[taminomara]

I'm not sure how to annotate math.floor, though. If we want to force users to check for these corner cases, then we should go with number. If we prefer it to be more ergonomic, then we should go with integer (most users will not run into these corner cases, probably).