Struct RegisterAccessTimestamp 

#[repr(C)]
pub struct RegisterAccessTimestamp<T> {
    pub prev_low: T,
    pub diff_low_limb: T,
}

Register Access Timestamp. The register accesses use the same argument as the memory accesses, and shares the same space as the memory. This structure is used for register accesses in RISC-V. For optimization, we ensure that all register accesses have the high limb of the timestamp and previous timestamp to be equal. This is done through adding in a “shadow” read, through the MemoryBump chip. Therefore, only the columns for low limb comparison is needed here.

Fields

prev_low: T

The previous timestamp that this memory access is being read from.

diff_low_limb: T

The difference in timestamp’s least significant 16 bit limb.

Implementations

impl<F: PrimeField32> RegisterAccessTimestamp<F>

pub fn populate_timestamp( &mut self, prev_timestamp: u64, current_timestamp: u64, output: &mut impl ByteRecord, )

Trait Implementations

impl<T> Borrow<RegisterAccessTimestamp<T>> for [T]

fn borrow(&self) -> &RegisterAccessTimestamp<T>

Immutably borrows from an owned value.

impl<T> BorrowMut<RegisterAccessTimestamp<T>> for [T]

fn borrow_mut(&mut self) -> &mut RegisterAccessTimestamp<T>

Mutably borrows from an owned value.

impl<T: Clone> Clone for RegisterAccessTimestamp<T>

fn clone(&self) -> RegisterAccessTimestamp<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for RegisterAccessTimestamp<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for RegisterAccessTimestamp<T>

fn default() -> RegisterAccessTimestamp<T>

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for RegisterAccessTimestamp<T>

where T: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<F: Field, EF: ExtensionField<F>> Into<Shape<ExprRef<F>, ExprExtRef<EF>>> for RegisterAccessTimestamp<ExprRef<F>>

fn into(self) -> Shape<ExprRef<F>, ExprExtRef<EF>>

Converts this type into the (usually inferred) input type.

impl<T> Serialize for RegisterAccessTimestamp<T>

where T: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> StructReflectionHelper for RegisterAccessTimestamp<T>

fn struct_reflection() -> Option<Vec<String>>

impl<T: Copy> Copy for RegisterAccessTimestamp<T>