This doesn't address your bigger question, but for truncating division by n I
usually use b[i] = div(A[i], convert(eltype(A), n)). For the particular case
of dividing by 2, an even better choice is b[i] = A[i] >> 1.
--Tim
On Friday, April 04, 2014 02:09:24 AM Carlos Becker wrote:
> I've seen previous posts in this list about this, but either I missed some
> of them or this particular issue is not addressed. I apologize if it is the
> former.
>
> I have a Uint8 array and I want to divide (still in Uint8) by 2. This is
> very handy when dealing with large images: no need to use more memory than
> needed.
> So, for example:
>
> A = rand(Uint8, (100,100)); # simulated image
>
> b = A / uint8(2)
>
> typeof( b ) # ==> returns Array{Float32,2}
>
>
> I understand why one may want that, but is there a way to override it and
> do the plain, element-wise uint8-by-uint8 division?
> (ie ignore promotion rules)
>
> Thanks.
