nalgebra_linalg6

Cholesky (+ its column updates), LDLᵀ / UDU, QR, inverse of dimension 6 (Lu6 is in static6_wide).

Part of nalgebra-cairo, the Cairo port of the Rust nalgebra crate on fixed::Fixed (Q32.32), built for provable game physics, split per dimension (docs/SPLIT.md §18: a number in a crate name is exactly that dimension; the dimension of a rectangular shape is max(rows, columns)).

What it holds

linalg::cholesky: Cholesky;
linalg::cholesky_update: the Cholesky column updates (rank_one_update, insert_column, remove_column);
linalg::inverse: the inverse;
linalg::qr: QR;
linalg::udu: UDU / LDLᵀ.

Upstream's module paths are kept: nalgebra_linalg6::<module path> is nalgebra::<module path> (docs/SPLIT.md §3.1). It depends on nalgebra_core, nalgebra_types2, nalgebra_types3, nalgebra_types4, nalgebra_types5, nalgebra_types6, nalgebra_static6_wide and simba.

Features (all on by default, forwarded by the facade's features of the same name): qr, cholesky_update. Each gates the module of that name; nalgebra with default-features = false leaves them out.

When to depend on it

nalgebra_linalg6 is a member of the declared closure static6_factor (17.7 s / 4.11 GB, 20 s / 4.5 GB).

Depend on the linalg packages for LU, Cholesky, LDLᵀ / UDU, QR and the inverse of the shapes of that dimension (linalgN pulls the lower ones for the column updates). Lu6 is in nalgebra_static6_wide.

For upstream's whole API at upstream's paths, depend on the facade nalgebra, which re-exports every sub-crate at the 0.1.0 paths (behind the features of the same names, on by default and still real: they gate code inside this package).

`internal`

The modules under internal (internal::linalg) hold items that are crate-private in nalgebra 0.1.0 and that the split had to make pub to share them across crates: no stability promise.

License

MIT.

Readme

nalgebra_linalg6

What it holds

When to depend on it

`internal`

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