Struct Rhdh 

pub struct Rhdh {
    pub padded: usize,
    /* private fields */
}

A reusable RHDH context: the random sign diagonal for a padded dimension.

Fields

padded: usize

Implementations

impl Rhdh

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

Build the transform for dim dimensions from a deterministic seed.

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

Apply the randomized Hadamard transform to a unit-normalized input of dim values. Returns a vector of padded values, approximately N(0, 1) per coordinate. The padding zeros receive random signs too, which keeps energy spread uniformly.