Struct ShaExtendChip 

pub struct ShaExtendChip;

Implements the SHA extension operation which loops over i = [16, 63] and modifies w[i] in each iteration. The only input to the syscall is the 4byte-aligned pointer to the w array.

In the AIR, each SHA extend syscall takes up 48 rows, where each row corresponds to a single iteration of the loop.

Implementations

impl ShaExtendChip

pub fn eval_flags<AB: SP1AirBuilder>(&self, builder: &mut AB)

impl ShaExtendChip

pub const fn new() -> Self

Trait Implementations

impl<AB> Air<AB> for ShaExtendChip

where AB: SP1AirBuilder,

fn eval(&self, builder: &mut AB)

impl<F> BaseAir<F> for ShaExtendChip

fn width(&self) -> usize

The number of columns (a.k.a. registers) in this AIR.

fn preprocessed_trace(&self) -> Option<DenseMatrix<F>>

impl Default for ShaExtendChip

fn default() -> ShaExtendChip

Returns the “default value” for a type.

impl<F: PrimeField32> MachineAir<F> for ShaExtendChip

type Record = ExecutionRecord

The execution record containing events for producing the air trace.

type Program = Program

The program that defines the control flow of the machine.

fn name(&self) -> String

A unique identifier for this AIR as part of a machine.

fn generate_trace( &self, input: &ExecutionRecord, _: &mut ExecutionRecord, ) -> RowMajorMatrix<F>

Generate the trace for a given execution record.

fn generate_dependencies(&self, input: &Self::Record, output: &mut Self::Record)

Generate the dependencies for a given execution record.

fn included(&self, shard: &Self::Record) -> bool

Whether this execution record contains events for this air.

fn num_rows(&self, _input: &Self::Record) -> Option<usize>

The number of rows in the trace

fn preprocessed_width(&self) -> usize

The width of the preprocessed trace.

fn preprocessed_num_rows( &self, _program: &Self::Program, _instrs_len: usize, ) -> Option<usize>

The number of rows in the preprocessed trace

fn generate_preprocessed_trace( &self, _program: &Self::Program, ) -> Option<DenseMatrix<F>>

Generate the preprocessed trace given a specific program.

fn commit_scope(&self) -> InteractionScope

Specifies whether it’s trace should be part of either the global or local commit.

fn local_only(&self) -> bool

Specifies whether the air only uses the local row, and not the next row.