Struct descent::expr::dynam::ExprInfo

pub struct ExprInfo {
    pub lin: Vec<ID>,
    pub nlin: Vec<ID>,
    pub quad: Vec<(usize, usize)>,
    pub nquad: Vec<(usize, usize)>,
    pub quad_list: Vec<Vec<ID>>,
    pub nquad_list: Vec<Vec<ID>>,
}

Sparsity and other information about an Expr for guiding AD process.

Linear and quadratic respective first and second derivatives only need to be computed once on parameter change. The usize pairs represent indices into nlin. They are local variable mappings.

The contracts from Degree are expected to be held.

Fields

lin: Vec<ID>

Constant first derivative

nlin: Vec<ID>

Non-constant first derivative

quad: Vec<(usize, usize)>

Constant second derivative

nquad: Vec<(usize, usize)>

Non-constant second derivative

quad_list: Vec<Vec<ID>>

nquad_list: Vec<Vec<ID>>

Implementations

impl ExprInfo

pub fn new() -> Self

Trait Implementations

impl Clone for ExprInfo

fn clone(&self) -> ExprInfo

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprInfo

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

Formats the value using the given formatter.

impl Default for ExprInfo

fn default() -> ExprInfo

Returns the "default value" for a type.

impl PartialEq<ExprInfo> for ExprInfo

fn eq(&self, other: &ExprInfo) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ExprInfo) -> bool

This method tests for !=.

impl StructuralPartialEq for ExprInfo