Struct Rotation 

pub struct Rotation { /* private fields */ }

Deterministic randomized rotation. Build once per (dim, seed); apply many times. apply is O(D log D) with no matrix stored.

Implementations

impl Rotation

pub fn new(dim: usize, seed: u64) -> Self

Build the rotation for dim dimensions from seed.

pub fn dim(&self) -> usize

Dimensionality this rotation was built for.

pub fn apply_in_place(&self, v: &mut [f32], scratch: &mut [f32])

Rotate v in place. scratch must be dim long (used for the permutation gather); contents are clobbered.

pub fn apply(&self, v: &[f32]) -> Vec<f32>

Rotate v, returning a new vector.

pub fn apply_inverse(&self, v: &[f32]) -> Vec<f32>

Inverse rotation (for tests/debugging; never needed on the search path).