Thread overview
Is there anyway to access LLVM's 128 bit int type for C from LDC?
December 14
Clang has __int128. Is there anyway to use this with D with LDC?
December 14
On Thursday, 14 December 2017 at 19:47:53 UTC, Jack Stouffer wrote:
> Clang has __int128. Is there anyway to use this with D with LDC?

Not really as a plain type, although there is effort to get [u]cent working. I could have sworn that mir was using InlineIR with it for multiplication. But InlineIR is the only way to get at it.

What operation do you need on it?


December 14
On Thursday, 14 December 2017 at 19:47:53 UTC, Jack Stouffer wrote:
> Clang has __int128. Is there anyway to use this with D with LDC?

There has been some work on this a while ago, by Kai, but it hasn't been merged yet: https://github.com/ldc-developers/ldc/pull/1355

 — David
December 15
On Thursday, 14 December 2017 at 23:33:34 UTC, Nicholas Wilson wrote:
> On Thursday, 14 December 2017 at 19:47:53 UTC, Jack Stouffer wrote:
>> Clang has __int128. Is there anyway to use this with D with LDC?
>
> Not really as a plain type, although there is effort to get [u]cent working. I could have sworn that mir was using InlineIR with it for multiplication. But InlineIR is the only way to get at it.
>
> What operation do you need on it?

I'm looking to use it to store the coefficient in my precise decimal type when you need more than 9 significant digits.

I might just end up translating Boost's multiprecision lib to D if ucent is impossible.
December 15
On Friday, 15 December 2017 at 01:17:17 UTC, Jack Stouffer wrote:
> On Thursday, 14 December 2017 at 23:33:34 UTC, Nicholas Wilson wrote:
>> On Thursday, 14 December 2017 at 19:47:53 UTC, Jack Stouffer wrote:
>>> Clang has __int128. Is there anyway to use this with D with LDC?
>>
>> Not really as a plain type, although there is effort to get [u]cent working. I could have sworn that mir was using InlineIR with it for multiplication. But InlineIR is the only way to get at it.
>>
>> What operation do you need on it?
>
> I'm looking to use it to store the coefficient in my precise decimal type when you need more than 9 significant digits.
>
> I might just end up translating Boost's multiprecision lib to D if ucent is impossible.

See also https://github.com/d-gamedev-team/gfm/tree/master/integers/gfm/integers
December 15
On Friday, 15 December 2017 at 02:08:12 UTC, Nicholas Wilson wrote:
> See also https://github.com/d-gamedev-team/gfm/tree/master/integers/gfm/integers

Thanks