Struct CustomOpDescriptor 

pub struct CustomOpDescriptor {
    pub fn_id: FnId,
    pub name: String,
    pub eval_fn: EvalFn,
    pub vectorizable: bool,
    pub simplify_rules: Vec<SimplifyRule>,
    pub egraph_rules: Vec<EGraphRule>,
    pub cost: f64,
}

Complete descriptor for a user-defined operator.

A descriptor bundles every pipeline-facing property of a custom operator into a single value. Register it with CustomOpRegistry::register.

Fields

fn_id: FnId

Numeric identifier — unique within a registry.

name: String

Human-readable name resolved by the expression parser.

eval_fn: EvalFn

Native evaluation function called by the JIT via call.

vectorizable: bool

When true, the operator is pure (no side effects) and may be duplicated by the batch f64×2 ILP vectorisation path.

simplify_rules: Vec<SimplifyRule>

Heuristic simplification rules (fed to the HeuristicEngine).

egraph_rules: Vec<EGraphRule>

E-graph rewrite rules (fed to equality saturation).

cost: f64

Extraction cost hint for the e-graph extractor (default: 2.0; built-in binary ops are 1.0, variables 0.5).

Implementations

impl CustomOpDescriptor

pub fn builder( fn_id: impl Into<FnId>, name: impl Into<String>, eval_fn: EvalFn, ) -> CustomOpDescriptorBuilder

Start building a descriptor with fluent API.

use rssn_advanced::custom::descriptor::{CustomOpDescriptor, EvalFn};
use rssn_advanced::dag::builder::DagBuilder;

extern "C" fn sin_approx(x: f64) -> f64 { x.sin() }

let mut builder = DagBuilder::new();
let fn_id = builder.intern_function("sin");
let _desc = CustomOpDescriptor::builder(fn_id, "sin", EvalFn::Arity1(sin_approx))
    .vectorizable()
    .build();

pub const fn arity(&self) -> u8

Returns the arity of the underlying evaluation function.

Trait Implementations

impl Clone for CustomOpDescriptor

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.