On Wednesday, March 14, 2012 17:51:49 Alex Rønne Petersen wrote: > On 14-03-2012 17:49, Jonathan M Davis wrote: > > On Wednesday, March 14, 2012 10:57:03 Manu wrote: > >> On 14 March 2012 02:37, Alex Rønne Petersen<xtzgzo...@gmail.com> wrote: > >>> On 14-03-2012 01:34, Paul D. Anderson wrote: > >>> The D language specifies 128-bit integers: cent and ucent. They just > >>> aren't implemented yet... > >> > >> Why aren't they implemented in a library for the time being at least, so > >> code can compile and work? > > > > I believe that what it really comes down to is that cent and ucent were > > set > > aside just in case they would be needed with no specific plans to do > > anything with them. So, they'll probably be implemented eventually, but > > they're definitely not a priority. And if you really need larger > > integers, then there's BigInt. Prior to the 64-bit ports of dmd (which > > are fairly recent), dmd wasn't even on any architectures that supported > > 128 bit integers anyway. > > > > - Jonathan M Davis > > There aren't really any platforms that natively support 128-bit > integers, even today. The most "support" you'll get is SIMD-like > extensions, but those aren't necessarily useful for implementing 128-bit > integers. > > So, most likely, the compiler would just have to unroll 128-bit > operations just as it does for 64-bit operations on 32-bit targets.
long long is 128 bits on 64-bit Linux. That's what I meant by support. 32-bit doesn't have that with any C type on any platform that I know of. I have no idea how it's implemented though. - Jonathan M Davis
