Enum ANode 

pub enum ANode {
    Const(f64),
    Linear {
        coeffs: Vec<f64>,
        b: f64,
    },
    LogLinear {
        coeffs: Vec<f64>,
        b: f64,
    },
    Eml(Box<ANode>, Box<ANode>),
}

An EML tree with rich leaves: constants, affine combinations, and log-affine (monomial) combinations.

Variants

Const(f64)

A free constant.

Linear

Affine combination Σ coeffs[i]·x_i + b.

Fields

coeffs: Vec<f64>

Per-variable slopes.

b: f64

Intercept.

LogLinear

Log-affine combination Σ coeffs[i]·ln(x_i) + b; exp of it is a monomial e^b·∏ x_i^{coeffs[i]}.

Fields

coeffs: Vec<f64>

Per-variable log-exponents.

b: f64

Log-intercept.

Eml(Box<ANode>, Box<ANode>)

The EML primitive exp(left) − ln(right).

Implementations

impl ANode

pub fn nodes(&self) -> usize

Complexity: structural nodes plus the number of active coefficients (so a monomial in 3 variables is “bigger” than a constant).

pub fn depth(&self) -> usize

Maximum eml depth (a leaf has depth 0).

pub fn pretty(&self) -> String

A readable rendering.

Trait Implementations

impl Clone for ANode

fn clone(&self) -> ANode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ANode

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

Formats the value using the given formatter.