Struct ExactInt 

pub struct ExactInt { /* private fields */ }

Arbitrary-precision signed integer. Distinct from ExactNum, which is floating-point.

Limbs are little-endian Words with no leading zeros. Zero is an empty limb vector and a positive sign.

Implementations

impl ExactInt

pub fn zero() -> ExactInt

The integer 0.

pub fn one() -> ExactInt

The integer 1.

pub fn from_u64(n: u64) -> ExactInt

Integer from u64.

pub fn from_u128(n: u128) -> ExactInt

Integer from u128.

pub fn from_i64(n: i64) -> ExactInt

Integer from i64.

pub fn from_i128(n: i128) -> ExactInt

Integer from i128.

pub fn is_zero(&self) -> bool

True if the value is 0.

pub fn is_negative(&self) -> bool

True if the value is strictly negative.

pub fn signum(&self) -> ExactInt

-1, 0, or +1.

pub fn bit_length(&self) -> usize

Number of bits in |self|. Zero has bit length 0.

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

Compare as signed integers.

pub fn add(&self, rhs: &ExactInt) -> ExactInt

self + rhs.

pub fn sub(&self, rhs: &ExactInt) -> ExactInt

self - rhs.

pub fn neg(&self) -> ExactInt

-self.

pub fn mul(&self, rhs: &ExactInt) -> ExactInt

self * rhs.

pub fn div_rem(&self, rhs: &ExactInt) -> Option<(ExactInt, ExactInt)>

Truncated division: (quotient, remainder) with remainder sign matching self. Zero divisor is None.

pub fn gcd(&self, rhs: &ExactInt) -> ExactInt

Non-negative GCD. gcd(0, 0) = 0.

pub fn pow(&self, exp: u64) -> ExactInt

self.pow(exp) by binary exponentiation. self^0 = 1.

pub fn to_exact_num(&self, p: usize, rm: RoundingMode) -> ExactNum

Convert to an ExactNum at (p, rm).

pub fn to_dec_string(&self) -> String

Decimal string of self (sign plus digits, no exponent).

pub fn from_dec_string(s: &str) -> Option<ExactInt>

Parse a decimal integer string (-?[0-9]+). Empty or non-digits is None.

pub fn from_exact_num(x: &ExactNum) -> Option<ExactInt>

Truncate a finite ExactNum toward zero. None if Inf or NaN.

Trait Implementations

impl Clone for ExactInt

fn clone(&self) -> ExactInt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExactInt

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

Formats the value using the given formatter.

impl Eq for ExactInt

impl PartialEq for ExactInt

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

Equality operator ==.

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

Inequality operator !=.