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Ivorforce / NumDot

Tensor math and scientific computation for the Godot game engine.
https://numdot.readthedocs.io
MIT License
19 stars 7 forks source link

Linear algebra (linalg) functions #30

Open Ivorforce opened 2 months ago

Ivorforce commented 2 months ago

Xtensor has support for linear algebra functions through xtensor-blas.

Unfortunately, this requires and LAPack binaries. Accordingly, it should probably only be part of a "wide scope" download.

Another problem is that (as they say) broadcasting is not fully supported for most of them yet. But I suppose that's ok, it will crash and people can use the broadcast function (#14). Better yet, we check and broadcast ourselves in NumDot if needed.

Ivorforce commented 1 month ago

I implemented an axes supporting reduce_dot simply using a caching multiply and sum.

It's not the best implementation, but it's short and uses almost no binary size (plus it's consistently a bit faster than using the nd. API for the calls separately).

With xtensor-blas, we can still accelerate when available, but this is a good start.