Struct GridPos 

pub struct GridPos { /* private fields */ }

CPU-side GridPos for when cuda-codegen is not enabled.

This provides a fully functional CPU implementation that mirrors the CUDA version’s semantics for testing and verification.

Implementations

impl GridPos

pub fn new(index: usize, buffer_width: usize) -> Self

Create a new GridPos for CPU execution.

Arguments

• index - Current cell’s linear index
• buffer_width - Width of the buffer including halos

pub fn from_local(lx: usize, ly: usize, tile_size: usize, halo: usize) -> Self

Create a GridPos from 2D coordinates within the interior.

Arguments

• lx - Local x coordinate (0..tile_size)
• ly - Local y coordinate (0..tile_size)
• tile_size - Size of the interior tile
• halo - Halo width

pub fn idx(&self) -> usize

Get the current cell’s linear index.

pub fn north<T: Copy>(&self, buf: &[T]) -> T

Access the north neighbor (y - 1).

pub fn south<T: Copy>(&self, buf: &[T]) -> T

Access the south neighbor (y + 1).

pub fn east<T: Copy>(&self, buf: &[T]) -> T

Access the east neighbor (x + 1).

pub fn west<T: Copy>(&self, buf: &[T]) -> T

Access the west neighbor (x - 1).

pub fn at<T: Copy>(&self, buf: &[T], dx: i32, dy: i32) -> T

Access a neighbor at arbitrary offset.

pub fn up<T: Copy>(&self, buf: &[T]) -> T

Access the neighbor above (z - 1, 3D only).

For 2D grids, this is equivalent to north.

pub fn down<T: Copy>(&self, buf: &[T]) -> T

Access the neighbor below (z + 1, 3D only).

For 2D grids, this is equivalent to south.

Trait Implementations

impl Clone for GridPos

fn clone(&self) -> GridPos

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GridPos

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

Formats the value using the given formatter.

impl Copy for GridPos