Enum BackwardKind 

pub enum BackwardKind {
    Fused(FusedOpId),
    Decompose,
    NotDifferentiable,
}

What kind of backward this fused op has.

• Fused(id) — emit a fused-backward op with the given id. Used by ops whose backward is awkward to express as a primitive decomposition (e.g. SoftmaxLastDimBackward’s fused subtract-and- project formula).
• Decompose — autograd derives the backward from the primitive decomposition (lower the fused node, then run autograd over the primitives).
• NotDifferentiable — backward returns Err / panics cleanly. Matches today’s QMatMul / ArgMaxDim treatment.

Variants

Fused(FusedOpId)

Decompose

NotDifferentiable

Trait Implementations

impl Clone for BackwardKind

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BackwardKind

impl Debug for BackwardKind

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

Formats the value using the given formatter.

impl Eq for BackwardKind

impl PartialEq for BackwardKind

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BackwardKind