jac_entry2

Julia

struct JacEntry2
JacEntry2(u::String, v::String, w::String, band::Band, ncol::Int64)
JacEntry2(u, v, w, band, ncol)

JacEntry2

One second-order band: ∂²(equation for u)/∂v ∂w. band is the first-order entry’s band with its coefficient replaced by ∂coef/∂(site of w): the same rows, ridx and contracted (plus any dimensions the second site adds under a nested sum), and cidx holding v’s column indices FOLLOWED by w’s. The first ncol of them are v’s (col_idx / col2_idx split them). Keeping both in one Band lets clipping, merging and normalization run unchanged.

Source

Python

class JacEntry2
JacEntry2(u: str, v: str, w: str, band: Band, ncol: int)
JacEntry2.col_idx: list  # property
JacEntry2.col2_idx: list  # property

One second-order band: ∂²(equation for u)/∂v ∂w. band is the first-order entry’s band with its coefficient replaced by ∂coef/∂(site of w): the same rows, ridx and contracted (plus any dimensions the second site adds under a nested sum), and cidx holding v’s column indices FOLLOWED by w’s. The first ncol of them are v’s (col_idx / col2_idx split them). Keeping both in one Band lets clipping, merging and normalization run unchanged.

Source

Rust

pub struct JacEntry2 {
    pub u: String,
    pub v: String,
    pub w: String,
    pub band: Band,
    pub ncol: usize,
}

impl JacEntry2 { pub fn col_idx(&self) -> &[Expr] }

impl JacEntry2 { pub fn col2_idx(&self) -> &[Expr] }

One second-order band: ∂²(equation for u)/∂v ∂w. band is the first-order entry’s band with its coefficient replaced by ∂coef/∂(site of w): the same rows, ridx and contracted (plus any dimensions the second site adds under a nested sum), and cidx holding v’s column indices FOLLOWED by w’s. The first ncol of them are v’s (JacEntry2::col_idx / JacEntry2::col2_idx split them). Keeping both in one Band lets clipping, merging and normalization run unchanged.

Source · Rust docs