Struct ArithmeticFunctionSet 

pub struct ArithmeticFunctionSet;

The canonical v1 arithmetic function set shared by CGP and GEP.

Eight opcodes, matching the historical inline CGP table exactly:

id	op	arity	formula
0	add	2	a + b
1	sub	2	a - b
2	mul	2	a * b
3	protected_div	2	a / b, or a if `
4	sin	1	sin(a)
5	cos	1	cos(a)
6	tanh	1	tanh(a)
7	const	0	1.0

The single zero-arity opcode (const 1.0) is the last function id by construction. GEP relies on this ordering so that all terminal-valued symbols (zero-arity functions, then variables, then constants) form one contiguous id range usable as a tail column mask — see Alphabet::terminal_range.

Implementations

impl ArithmeticFunctionSet

pub const ARITIES: [usize; 8]

Arity of each opcode, indexed by id.

Mirrors crate::algorithms::gp_cgp::FUNCTION_ARITIES; kept as an associated constant so FunctionSet::arity is a simple table lookup.

Trait Implementations

impl Clone for ArithmeticFunctionSet

fn clone(&self) -> ArithmeticFunctionSet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ArithmeticFunctionSet

impl Debug for ArithmeticFunctionSet

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

Formats the value using the given formatter.

impl Default for ArithmeticFunctionSet

fn default() -> ArithmeticFunctionSet

Returns the “default value” for a type.

impl FunctionSet for ArithmeticFunctionSet

fn num_functions(&self) -> usize

Number of function opcodes. Their ids are 0..num_functions().

fn arity(&self, symbol: Symbol) -> usize

Arity (argument count) of a function opcode.

fn max_arity(&self) -> usize

Largest arity among all functions.

fn apply(&self, symbol: Symbol, args: &[f32]) -> f32

Applies a function opcode to its already-evaluated arguments.