LDC asm for int128
Nicholas Wilson
iamthewilsonator at hotmail.com
Wed Sep 11 02:02:53 UTC 2019
On Tuesday, 10 September 2019 at 06:18:05 UTC, Newbie2019 wrote:
> I want to translate this c code into d (build with ldc), so I
> can use -flto and inline with other code.
>
> uint64_t _wymum(uint64_t A, uint64_t B){
> __uint128_t r = A ;
> r *= B;
> return (r>>64)^r;
> }
>
> Do i need ASM or is there a easy way to implement it ?
Easiest way is to use GFM's[1] 128bit integers.
[1]:http://code.dlang.org/packages/gfm
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