On Sunday, 19 April 2020 at 17:07:36 UTC, p.shkadzko wrote:
I'd like to calculate XX^T where X is some [m x n] matrix.

// create a 3 x 3 matrix
Slice!(double*, 2LU) a = [2.1, 1.0, 3.2, 4.5, 2.4, 3.3, 1.5, 0, 2.1].sliced(3, 3);
auto b = a * a.transposed; // error

Looks like it is not possible due to "incompatible types for (a) * (transposed(a)): Slice!(double*, 2LU, cast(mir_slice_kind)2) and Slice!(double*, 2LU, cast(mir_slice_kind)0)"

I'd like to understand why and how should this operation be performed in mir. Also, what does the last number "0" or "2" means in the type definition "Slice!(double*, 2LU, cast(mir_slice_kind)0)"?

2 is Contiguous, 0 is Universal, 1 is Canonical. To this day, I don’t have the greatest understanding of the difference.

Try the mtimes function in lubeck.

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