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- Subject: Re: Dropped support for C89?
- From: Coda Highland <chighland@...>
- Date: Sun, 4 Jan 2015 16:27:00 -0800
On Sun, Jan 4, 2015 at 4:21 PM, Lorenzo Donati
> Ok, interesting. May I know why you chose "long long" instead of int64_t
> instead? The former is 64 bit *at least*, whereas the latter is guaranteed
> to be exactly 64 bit IIRC. Is Lua code "protected" against long long being
> bigger than that (I'm guessing there are platforms for which long long could
> be well 128 bit)?
> -- Lorenzo
long long is guaranteed to exist by C99. uint64_t is not -- if a
platform doesn't offer a type that's EXACTLY 64 bits, uint64_t must be
left undefined. (There's uint64_least_t for the smallest type >= 64
bits, and uint64_fast_t for the compiler's opinion of the fastest type
that's at least 64 bits. These will be defined if a machine has e.g.