SIMD c = a op b

[Cecil Ward]

On Sunday, 18 June 2023 at 04:54:08 UTC, Cecil Ward wrote:
> Is it true that this doesn’t work (in either branch)?
>
> float4 a,b;
> static if (__traits(compiles, a/b))
>     c = a / b;
> else
>     c[] = a[] / b[];
>
> I tried it with 4 x 64-bit ulongs in a 256-bit vector instead.
> Hoping I have done things correctly, I got an error message 
> about requiring a destination variable as in c = a op b where I 
> tried simply "return a / b;" In the else branch, I got a type 
> conversion error. Is that because a[] is an array of 256-bit 
> vectors, in the else case, not an array of ulongs?

Correction I should have written ‘always work’ - I just copied 
the example straight from the language documentation for simd and 
adapted it to use ulongs and a wider vector.

I was using GDC.