Struct ShiftRight

pub struct ShiftRight;

Right-shift for 128-bit integers AKA right-shift for i128.

Behavior

BEFORE: _ arg3 arg2 arg1 arg0 shamt
AFTER:  _ res3 res2 res1 res0

where res == arg >> shamt as i128s.

Preconditions

• arg consists of 4 u32s
• shamt is in [0:128)

Postconditions

• res consists of 4 u32s

Panics

• If preconditions are not met.

Implementations

impl ShiftRight

pub const ARGUMENT_LIMB_3_NOT_U32_ERROR_ID: i128 = 323i128

pub const ARGUMENT_LIMB_2_NOT_U32_ERROR_ID: i128 = 322i128

pub const ARGUMENT_LIMB_1_NOT_U32_ERROR_ID: i128 = 321i128

pub const ARGUMENT_LIMB_0_NOT_U32_ERROR_ID: i128 = 320i128

pub const SHAMT_NOT_U32_ERROR_ID: i128 = 324i128

Trait Implementations

impl BasicSnippet for ShiftRight

fn inputs(&self) -> Vec<(DataType, String)>

fn outputs(&self) -> Vec<(DataType, String)>

fn entrypoint(&self) -> String

fn code(&self, library: &mut Library) -> Vec<LabelledInstruction>

fn annotated_code(&self, library: &mut Library) -> Vec<LabelledInstruction>

fn link_for_isolated_run(&self) -> Vec<LabelledInstruction>

fn init_stack_for_isolated_run(&self) -> Vec<BFieldElement>

Initial stack on program start, when the snippet runs in isolation.

fn stack_diff(&self) -> isize

fn sign_offs(&self) -> HashMap<Reviewer, SignOffFingerprint>

Contains an entry for every sign off.

impl Clone for ShiftRight

fn clone(&self) -> ShiftRight

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ShiftRight

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

Formats the value using the given formatter.

impl Hash for ShiftRight

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ShiftRight

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ShiftRight

impl Eq for ShiftRight

impl StructuralPartialEq for ShiftRight