On Wed, Jan 06, 2016 at 05:23:12PM -0500, Andrei Alexandrescu via Digitalmars-d
wrote:
> On 1/6/16 5:18 PM, deadalnix wrote:
> >On Wednesday, 6 January 2016 at 21:57:13 UTC, Guillaume Piolat wrote:
> >>On Wednesday, 6 January 2016 at 21:25:45 UTC, deadalnix wrote:
> >>>In my case, I'm interested in 160 and 256 bits integers. Using
> >>>BigInt seems wasteful as I know the integer size I want. Do we have
> >>>something like this around ?
> >>
> >>https://github.com/d-gamedev-team/gfm/blob/master/math/gfm/math/wideint.d
> >>
> >>public domain. Slow division. Only power-of-2 bits supported.
> >
> >That is awesome ! Won't do the 160 bits case, but I can deal with
> >that. Did you consider this as a worthy addition to phobos ? I think
> >it is.
>
> Yes, we need to add that to phobos. Who could be the champion? --
Here are a few things that should probably be addressed before merging
to Phobos:
- Better error message when user attempts to instantiate a wide int with
non-power-of-2 bits. (Currently spews a whole bunch of internal
compile errors.)
- toString() needs to:
1) Be the non-allocating overload:
void toString(scope void delegate(const(char)[]) dg) {...}
2) Output in decimal by default instead of hex.
- Need a nice way of initializing wide ints from literals.
- [optional] Division performance can probably be improved.
T
--
I don't trust computers, I've spent too long programming to think that they can
get anything right. -- James Miller
