Very simple SIMD programming

[Manu]

On 25 October 2012 02:18, Iain Buclaw <ibuclaw at ubuntu.com> wrote:

> On 25 October 2012 00:16, Manu <turkeyman at gmail.com> wrote:
> > On 25 October 2012 02:01, Iain Buclaw <ibuclaw at ubuntu.com> wrote:
> >>
> >> On 24 October 2012 23:46, Manu <turkeyman at gmail.com> wrote:
> >>
> >> > Let's consider your example above for instance, I would rewrite (given
> >> > existing syntax):
> >> >
> >> > // vector length of context = 1; current_mask = T
> >> > int4 v = [0,3,4,1];
> >> > int4 w = 3; // [3,3,3,3] via broadcast
> >> > uint4 m = maskLess(v, w); // [T,F,F,T] (T == ones, F == zeroes)
> >> > v += int4(1); // [1,4,5,2]
> >> >
> >> > // the if block is trivially rewritten:
> >> > int4 trueSide = v + int4(2);
> >> > int4 falseSize = v + int4(3);
> >> > v = select(m, trueSide, falseSide); // [3,7,8,4]
> >> >
> >> >
> >>
> >> This should work....
> >>
> >> int4 trueSide = v + 2;
> >> int4 falseSide = v + 3;
> >
> >
> > Probably, just wasn't sure.
>
> The idea with vectors is that they support the same operations that D
> array operations support. :-)
>

I tried to have indexing banned... I presume indexing works? :(
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