Enum RotationState 

pub enum RotationState {
    Angle(Tensor<3>),
    Quaternion(Tensor<4>),
}

The cumulative-rotation accumulator carried between calls in a Mamba-3 cache — the variant matching the block’s RotationKind.

• Angle — abelian per-pair cumulative RoPE angle, shape [batch, nheads, num_rope_angles] (today’s cum_angle).
• Quaternion — per-block cumulative unit quaternion, shape [batch, nheads, blocks, 4], produced by quat_cumprod.

This is the cache-level counterpart of RotationKind. It is defined here (the rotation module owns the accumulator type); substituting it for the pathway caches’ cum_angle_bha field happens together with the forward/step wiring that consumes it.

Variants

Angle(Tensor<3>)

Abelian RoPE cumulative angle, shape [batch, nheads, num_rope_angles].

Quaternion(Tensor<4>)

Quaternion cumulative rotation, shape [batch, nheads, blocks, 4].

Implementations

impl RotationState

pub fn zeros_angle( batch: usize, nheads: usize, num_rope_angles: usize, device: &Device, ) -> Self

Zero-initialised abelian angle accumulator [batch, nheads, num_rope_angles].

pub fn identity_quaternion( batch: usize, nheads: usize, blocks: usize, device: &Device, ) -> Self

Identity-initialised quaternion accumulator [batch, nheads, blocks, 4] (every block is the identity quaternion (1, 0, 0, 0)).

pub fn angle(self) -> Tensor<3>

Unwrap the abelian angle accumulator; panics if this is a quaternion.

pub fn quaternion(self) -> Tensor<4>

Unwrap the quaternion accumulator; panics if this is an angle.

pub fn sanity(&self)

Run the NaN/Inf guards on the held tensor.

Trait Implementations

impl AutodiffModule for RotationState

fn valid(&self) -> Self

Returns the same module, but on the inner backend without auto-differentiation.

fn from_inner(module: Self) -> Self

Wraps an inner module back into an auto-diff module.

impl Clone for RotationState

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RotationState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for RotationState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Module for RotationState

type Record = RotationStateRecord

Type to save and load the module.

fn load_record(self, record: Self::Record) -> Self

Load the module state from a record.

fn into_record(self) -> Self::Record

Convert the module into a record containing the state.

fn num_params(&self) -> usize

Get the number of parameters the module has, including all of its sub-modules.

fn visit<Visitor: ModuleVisitor>(&self, visitor: &mut Visitor)

Visit each tensor parameter in the module with a visitor.

fn map<Mapper: ModuleMapper>(self, mapper: &mut Mapper) -> Self

Map each tensor parameter in the module with a mapper.

fn collect_devices(&self, devices: Devices) -> Devices

Return all the devices found in the underneath module tree added to the given vector without duplicates.

fn to_device(self, device: &Device) -> Self

Move the module and all of its sub-modules to the given device.

fn fork(self, device: &Device) -> Self

Fork the module and all of its sub-modules to the given device.

fn devices(&self) -> Vec<Device>

Return all the devices found in the underneath module tree without duplicates.

fn no_grad(self) -> Self

Each tensor in the module tree will not require grad.

fn train(self) -> Self

where Self: AutodiffModule,

Move the module and all of its sub-modules to the autodiff backend.

fn quantize_weights(self, quantizer: &mut Quantizer) -> Self

Quantize the weights of the module.

impl ModuleDisplay for RotationState

fn format(&self, passed_settings: DisplaySettings) -> String

Formats the module with provided display settings.

fn custom_settings(&self) -> Option<DisplaySettings>

Custom display settings for the module.

fn custom_content(&self, _content: Content) -> Option<Content>

Custom attributes for the module.

impl ModuleDisplayDefault for RotationState

fn content(&self, content: Content) -> Option<Content>

Attributes of the module used for display purposes.

fn num_params(&self) -> usize

Gets the number of the parameters of the module.