Enum MaybeInfiniteInt

pub enum MaybeInfiniteInt {
    NegInfinity,
    Finite(u128),
    PosInfinity,
}

A possibly infinite integer. Values are encoded such that the ordering on u128 matches the natural order on the original type. For example, -128i8 is encoded as 0 and 127i8 as 255. See signed_bias for details.

Variants

NegInfinity

Finite(u128)

Encoded value. DO NOT CONSTRUCT BY HAND; use new_finite_{int,uint}.

PosInfinity

Implementations

impl MaybeInfiniteInt

pub fn new_finite_uint(bits: u128) -> Self

pub fn new_finite_int(bits: u128, size: u64) -> Self

pub fn as_finite_uint(self) -> Option<u128>

pub fn as_finite_int(self, size: u64) -> Option<u128>

pub fn minus_one(self) -> Option<Self>

Note: this will not turn a finite value into an infinite one or vice-versa.

pub fn plus_one(self) -> Option<Self>

Note: this will turn u128::MAX into PosInfinity. This means plus_one and minus_one are not strictly inverses, but that poses no problem in our use of them. this will not turn a finite value into an infinite one or vice-versa.

Trait Implementations

impl Clone for MaybeInfiniteInt

fn clone(&self) -> MaybeInfiniteInt

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MaybeInfiniteInt

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

Formats the value using the given formatter.

impl Ord for MaybeInfiniteInt

fn cmp(&self, other: &MaybeInfiniteInt) -> 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 MaybeInfiniteInt

fn eq(&self, other: &MaybeInfiniteInt) -> 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 MaybeInfiniteInt

fn partial_cmp(&self, other: &MaybeInfiniteInt) -> 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 Copy for MaybeInfiniteInt

impl Eq for MaybeInfiniteInt

impl StructuralPartialEq for MaybeInfiniteInt