Struct Integer 

pub struct Integer(/* private fields */);

任意精度整数，规范形见模块文档。

Implementations

impl Integer

pub const fn zero() -> Integer

pub const fn one() -> Integer

pub const fn from_i64(v: i64) -> Integer

pub fn parse(s: &str) -> Option<Integer>

解析十进制字面量（可带负号）；超出 i64 自动落大数表示。

pub fn is_zero(&self) -> bool

pub fn is_one(&self) -> bool

pub fn is_negative(&self) -> bool

pub fn sign(&self) -> i32

pub fn to_i64(&self) -> Option<i64>

pub fn to_u64(&self) -> Option<u64>

非负值且不超过 u64 时返回（Rational 的 Small 分母可到 u64 上界； Big 表示按值判断——(i64::MAX, u64::MAX] 区间的值在 Integer 是 Big， 但作为 Rational 分母仍应落 Small，故此处不能只看表示）。

pub fn from_u64(v: u64) -> Integer

u64 落位：能进 i64 用 Small，否则 Big（规范形要求）。

pub fn bit_len(&self) -> u64

数值的二进制位数（0 返回 0）。expr 层用它做幂折叠的规模守卫。

pub fn abs(&self) -> Integer

pub fn neg(&self) -> Integer

pub fn add(&self, other: &Integer) -> Integer

pub fn sub(&self, other: &Integer) -> Integer

pub fn mul(&self, other: &Integer) -> Integer

pub fn pow(&self, exp: u32) -> Integer

非负整数幂。规模守卫由调用方（expr 层）负责，本方法不做上限检查。

pub fn gcd(&self, other: &Integer) -> Integer

辗转相除，结果非负；gcd(0, 0) = 0。

pub fn div_exact(&self, divisor: &Integer) -> Integer

精确除法；调用方保证整除（Rational 规范化路径）。

pub fn from_bigint(b: BigInt) -> Integer

由大数构造（自动落回 Small 表示，若值在 i64 内）。

pub fn to_bigint(&self) -> BigInt

导出为大数表示（Rational 跨表示运算的提升通道）。

Trait Implementations

impl Clone for Integer

fn clone(&self) -> Integer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Integer

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

Formats the value using the given formatter.

impl Display for Integer

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

Formats the value using the given formatter.

impl Eq for Integer

impl Hash for Integer

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

where H: Hasher,

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 Integer

fn cmp(&self, other: &Integer) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Integer

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Integer

fn partial_cmp(&self, other: &Integer) -> 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 Ring for Integer

fn zero() -> Integer

fn one() -> Integer

fn from_i64_coeff(v: i64) -> Integer

由 i64 构造系数（poly 偏导的指数乘子等用途）。

fn add(&self, other: &Integer) -> Integer

fn sub(&self, other: &Integer) -> Integer

fn mul(&self, other: &Integer) -> Integer

fn neg(&self) -> Integer

fn is_zero(&self) -> bool

fn is_one(&self) -> bool

fn pow_u32(&self, e: u32) -> Integer

非负整数幂；默认重复乘，实现方可覆写快速路径。

impl StructuralPartialEq for Integer