Struct ExprGraph 

pub struct ExprGraph { /* private fields */ }

Expression graph with optimized performance. Forward evaluation is pure; reuse an EvalTape to cache intermediates explicitly.

Implementations

impl ExprGraph

pub fn new() -> Self

pub fn input(&mut self, name: String) -> NodeId

pub fn constant(&mut self, value: Float) -> NodeId

pub fn operation<I>(&mut self, op: Op, inputs: I) -> NodeId

where I: AsRef<[NodeId]>,

pub fn output(&mut self, node: NodeId) -> NodeId

pub fn fwd_tape(&self) -> EvalTape

Allocate a forward-mode tape sized for this graph. Reuse it to avoid allocations between runs.

pub fn tape(&self) -> ReverseTape

Allocate a reverse-mode tape sized for this graph.

pub fn reverse_tape(&self) -> ReverseTape

pub fn input_names(&self) -> &[String]

pub fn eval_fwd(&self, inputs: &[Float]) -> Vec<(Float, Vec<Float>)>

Pure forward evaluation that allocates its own tape. Suitable for single-shot calls. Returns a value and per-input gradient vector for each output.

pub fn eval_fwd_with_tape( &self, inputs: &[Float], tape: &mut EvalTape, ) -> Vec<(Float, Vec<Float>)>

Forward evaluation that reuses the provided tape to cache intermediates. Returns a value and per-input gradient vector for each output.

pub fn eval_fwd_one(&self, inputs: &[Float]) -> (Float, Vec<Float>)

pub fn eval_fwd_one_with_tape( &self, inputs: &[Float], tape: &mut EvalTape, ) -> (Float, Vec<Float>)

pub fn eval_fwd_named( &self, inputs: &[Float], ) -> Vec<(Float, Vec<(String, Float)>)>

pub fn eval_fwd_named_with_tape( &self, inputs: &[Float], tape: &mut EvalTape, ) -> Vec<(Float, Vec<(String, Float)>)>

pub fn eval(&self, inputs: &[Float]) -> Vec<(Float, Vec<Float>)>

Reverse-mode evaluation that allocates its own tape. Suitable for single-shot calls. Returns a value and per-input gradient vector for each output.

pub fn eval_with_tape( &self, inputs: &[Float], tape: &mut ReverseTape, ) -> Vec<(Float, Vec<Float>)>

Reverse-mode evaluation that reuses the provided tape to cache intermediates. Returns a value and per-input gradient vector for each output.

pub fn eval_for( &self, inputs: &[Float], outputs: &[NodeId], ) -> Vec<(Float, Vec<Float>)>

Reverse-mode evaluation for a selected set of outputs.

pub fn eval_for_with_tape( &self, inputs: &[Float], outputs: &[NodeId], tape: &mut ReverseTape, ) -> Vec<(Float, Vec<Float>)>

Reverse-mode evaluation for a selected set of outputs with a reusable tape.

pub fn eval_one(&self, inputs: &[Float]) -> (Float, Vec<Float>)

pub fn eval_one_with_tape( &self, inputs: &[Float], tape: &mut ReverseTape, ) -> (Float, Vec<Float>)

pub fn eval_named(&self, inputs: &[Float]) -> Vec<(Float, Vec<(String, Float)>)>

pub fn eval_named_with_tape( &self, inputs: &[Float], tape: &mut ReverseTape, ) -> Vec<(Float, Vec<(String, Float)>)>

pub fn eval_named_for( &self, inputs: &[Float], outputs: &[NodeId], ) -> Vec<(Float, Vec<(String, Float)>)>

pub fn eval_named_for_with_tape( &self, inputs: &[Float], outputs: &[NodeId], tape: &mut ReverseTape, ) -> Vec<(Float, Vec<(String, Float)>)>

Trait Implementations

impl Debug for ExprGraph

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

Formats the value using the given formatter.

impl Default for ExprGraph

fn default() -> Self

Returns the “default value” for a type.