Struct num::bigint::BigUint [−] [src]

pub struct BigUint {
    // some fields omitted
}

A big unsigned integer type.

A BigUint-typed value BigUint { data: vec!(a, b, c) } represents a number (a + b * big_digit::BASE + c * big_digit::BASE^2).

Methods

`impl BigUint`

`fn new(digits: Vec<BigDigit>) -> BigUint`

Creates and initializes a BigUint.

The digits are in little-endian base 2^32.

`fn from_slice(slice: &[BigDigit]) -> BigUint`

Creates and initializes a BigUint.

The digits are in little-endian base 2^32.

`fn from_bytes_be(bytes: &[u8]) -> BigUint`

Creates and initializes a BigUint.

The bytes are in big-endian byte order.

Examples

extern crate num; fn main() { use num::bigint::BigUint; assert_eq!(BigUint::from_bytes_be(b"A"), BigUint::parse_bytes(b"65", 10).unwrap()); assert_eq!(BigUint::from_bytes_be(b"AA"), BigUint::parse_bytes(b"16705", 10).unwrap()); assert_eq!(BigUint::from_bytes_be(b"AB"), BigUint::parse_bytes(b"16706", 10).unwrap()); assert_eq!(BigUint::from_bytes_be(b"Hello world!"), BigUint::parse_bytes(b"22405534230753963835153736737", 10).unwrap()); }

use num::bigint::BigUint;

assert_eq!(BigUint::from_bytes_be(b"A"),
           BigUint::parse_bytes(b"65", 10).unwrap());
assert_eq!(BigUint::from_bytes_be(b"AA"),
           BigUint::parse_bytes(b"16705", 10).unwrap());
assert_eq!(BigUint::from_bytes_be(b"AB"),
           BigUint::parse_bytes(b"16706", 10).unwrap());
assert_eq!(BigUint::from_bytes_be(b"Hello world!"),
           BigUint::parse_bytes(b"22405534230753963835153736737", 10).unwrap());

`fn from_bytes_le(bytes: &[u8]) -> BigUint`

Creates and initializes a BigUint.

The bytes are in little-endian byte order.

`fn to_bytes_le(&self) -> Vec<u8>`

Returns the byte representation of the BigUint in little-endian byte order.

Examples

extern crate num; fn main() { use num::bigint::BigUint; let i = BigUint::parse_bytes(b"1125", 10).unwrap(); assert_eq!(i.to_bytes_le(), vec![101, 4]); }

use num::bigint::BigUint;

let i = BigUint::parse_bytes(b"1125", 10).unwrap();
assert_eq!(i.to_bytes_le(), vec![101, 4]);

`fn to_bytes_be(&self) -> Vec<u8>`

Returns the byte representation of the BigUint in big-endian byte order.

Examples

extern crate num; fn main() { use num::bigint::BigUint; let i = BigUint::parse_bytes(b"1125", 10).unwrap(); assert_eq!(i.to_bytes_be(), vec![4, 101]); }

use num::bigint::BigUint;

let i = BigUint::parse_bytes(b"1125", 10).unwrap();
assert_eq!(i.to_bytes_be(), vec![4, 101]);

`fn parse_bytes(buf: &[u8], radix: u32) -> Option<BigUint>`

Creates and initializes a BigUint.

Examples

extern crate num; fn main() { use num::bigint::{BigUint, ToBigUint}; assert_eq!(BigUint::parse_bytes(b"1234", 10), ToBigUint::to_biguint(&1234)); assert_eq!(BigUint::parse_bytes(b"ABCD", 16), ToBigUint::to_biguint(&0xABCD)); assert_eq!(BigUint::parse_bytes(b"G", 16), None); }

use num::bigint::{BigUint, ToBigUint};

assert_eq!(BigUint::parse_bytes(b"1234", 10), ToBigUint::to_biguint(&1234));
assert_eq!(BigUint::parse_bytes(b"ABCD", 16), ToBigUint::to_biguint(&0xABCD));
assert_eq!(BigUint::parse_bytes(b"G", 16), None);