On 14 March 2012 02:37, Alex Rønne Petersen <xtzgzo...@gmail.com> wrote:
> On 14-03-2012 01:34, Paul D. Anderson wrote: > >> I'm working on a decimal arithmetic project and I need 128 bit integers >> in order to implement the decimal128 type. (The decimal value is stored >> in 128 bits; the coefficient field is 114 bits, to hold values with 34 >> decimal digits.) >> >> I could use BigInt (but that's overkill) or I could code them up myself, >> which I'm willing to do if no alternative exists. But surely someone has >> already created this type, either as part of a larger project or as some >> kind of test problem, etc. Or perhaps someone would like to tackle it as >> a project of their own. >> >> I specifically need unsigned 128 bit integers, but both signed and >> unsigned versions would probably have more general applications. Better >> yet, if it checked for overflow, like Andrei's CheckedInt class in TDPL, >> it would be more immediately useful. >> >> This could also be the basis for a general fixed-size integer type, >> where the size is specified: CheckedInt!128, CheckedInt!96, etc. I >> recall having seen something like this mentioned in this forum. >> >> So has anyone already done this? Does anyone want to take it on? >> >> Thanks, >> >> Paul >> >> > 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?
