Struct Tape 

pub struct Tape<T> { /* private fields */ }

The computation tape that records operations for reverse-mode AD.

Create a tape with Tape::new, then create variables on it with Tape::var.

Examples

use autodiff::Tape;

let tape = Tape::new();
let x = tape.var(3.0);
let y = x.clone() * x.clone();  // y = x²

let grads = y.backward();
assert_eq!(y.value(), 9.0);
assert_eq!(grads.get(&x), 6.0);  // dy/dx = 2x = 6

Implementations

impl<T> Tape<T>

pub fn new() -> Self

Creates a new empty tape.

impl<T: Float> Tape<T>

pub fn var(&self, value: T) -> Var<T>

Creates a differentiable variable on this tape.

Trait Implementations

impl<T: Clone> Clone for Tape<T>

fn clone(&self) -> Tape<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.