Struct JacobianSparsityPattern 

pub struct JacobianSparsityPattern {
    pub num_outputs: usize,
    pub num_inputs: usize,
    pub rows: Vec<u32>,
    pub cols: Vec<u32>,
}

Available on crate feature bytecode only.

Sparsity pattern for a Jacobian matrix (non-symmetric, general m x n).

Stored in COO format: (rows[k], cols[k]) indicates that output rows[k] depends on input cols[k].

Fields

num_outputs: usize

Number of outputs (rows of the Jacobian).

num_inputs: usize

Number of inputs (columns of the Jacobian).

rows: Vec<u32>

Output indices (row indices in the Jacobian).

cols: Vec<u32>

Input indices (column indices in the Jacobian).

Implementations

impl JacobianSparsityPattern

pub fn nnz(&self) -> usize

Number of structural non-zeros in the pattern.

pub fn is_empty(&self) -> bool

Whether the pattern is empty (all zeros).

pub fn contains(&self, output_idx: usize, input_idx: usize) -> bool

Check if position (output_idx, input_idx) is in the pattern.

Trait Implementations

impl<'de> Deserialize<'de> for JacobianSparsityPattern

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for JacobianSparsityPattern

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.