Struct NoGradientBinaryRule 

pub struct NoGradientBinaryRule;

Backward rule for non-differentiable two-input ops (the comparison family: Equal, Ne, Lt, Le, Gt, Ge). Returns None for both input slots so the autograd traversal terminates without extending the gradient graph through the op. Comparison-on-loss- path is a user error; the missing gradient downstream surfaces it rather than panicking.

Trait Implementations

impl GradientRule for NoGradientBinaryRule

fn backward( &self, _graph: &SharedGraph, _op: &Op, _inputs: &[NodeId], _output: NodeId, _upstream: NodeId, ) -> GradientList

Build gradient nodes for this op.