Enum Divergence 

pub enum Divergence {
    IntOverflow,
    DivideByZero,
    NegativeExponent,
    ExponentTooLarge,
    FloatDivideByZero,
}

Why a cell’s fixed-width value is not the value the VM computes for the same operands. The fabric’s arithmetic is the 64-bit projection of the VM’s; the VM is exact and total in a way no fixed-width datapath is, so every point where the two part is named here, and a checked evaluation reports it instead of producing the wrapped, zeroed or saturated word.

Variants

IntOverflow

The exact integer result leaves i64: the VM promotes it to a BigInt.

DivideByZero

An integer division or remainder by zero: the VM fails Division by zero / Modulo by zero.

NegativeExponent

An integer base raised to a negative exponent: the VM fails.

ExponentTooLarge

An integer exponent beyond u32: the VM fails exponent too large.

FloatDivideByZero

A float divided by zero of either sign: the VM fails Division by zero.

Implementations

impl Divergence

pub const ALL: [Divergence; 5]

pub fn code(self) -> u32

The stable code a device reports for this divergence (0 is reserved for “none”).

pub fn from_code(code: u32) -> Option<Divergence>

The divergence a device code names.

pub fn name(self) -> &'static str

The stable name used in reports and accounting.

Trait Implementations

impl Clone for Divergence

fn clone(&self) -> Divergence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Divergence

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Divergence

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Divergence

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

Formats the value using the given formatter.

impl Hash for Divergence

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 Ord for Divergence

fn cmp(&self, other: &Divergence) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Divergence

fn eq(&self, other: &Divergence) -> 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 PartialOrd for Divergence

fn partial_cmp(&self, other: &Divergence) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Divergence

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Divergence

impl Eq for Divergence

impl StructuralPartialEq for Divergence