Re: Lua 5.1 (beta) now available
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- Subject: Re: Lua 5.1 (beta) now available
- From: Rici Lake <lua@...>
- Date: 2005年11月11日 16:22:56 -0500
On 11-Nov-05, at 3:54 PM, Mike Pall wrote:
Ah, ok. So we better leave out the L and specify these macros
as 'not allowed to throw errors'.
That's quite awkward for the integer division and modulus operators,
though, and those are not used in any context where L is not available.
I'm not particularly keen on pseudo-NANs. Real NANs are hard enough to
deal with. In any event, 1/0 is not a NAN, it's +infinity (another
quantity hard to express with normal integer arithmetic.) So the
question is, would it be a tragedy if:
local a = 1/0
produced a compilation error when the compiler runs with integer
arithmetic.
I don't think it would be. It is true that I have been known to use 1/0
in actual lua code, but I'd actually be happier to use math.maxnum
provided that it were really the largest possible number and not just
some big number. (math.minnum would also be necessary.)