Crate ibig

Big integer library.

The library implements arbitrarily large integer arithmetic in pure Rust.

The two integer types are UBig (for unsigned integers) and IBig (for signed integers).

Create numbers using the ubig and ibig macros.

use ibig::prelude::*;
let a = ubig!(12345678);
let b = ubig!(0x10ff);
let c = ibig!(-azz base 36);
assert_eq!(c.to_string(), "-14255");

Parsing and formatting in any base 2-36 is supported.

let a: UBig = "1503321".parse()?;
let b = IBig::from_str_radix("-10ff", 16)?;
assert_eq!(format!("{:^10X}", b), "  -10FF   ");
assert_eq!(format!("hello {}", b.in_radix(4)), "hello -1003333");

Standard arithmetic operations are supported on values and on references.

assert_eq!(ubig!(100) * ubig!(200), ubig!(20000));
let a = ubig!(0xff);
assert_eq!(&a / &a, ubig!(1));
assert_eq!(ibig!(1) << 1000 >> 999, ibig!(2));

Modules

prelude

Reexports the most useful names.

Macros

ibig	Create an IBig value.
ubig	Create a UBig value.

Structs

IBig	Signed big integer.
InRadix	Representation of a UBig or IBig in any radix between 2 and 36 inclusive.
OutOfBoundsError	Number out of bounds.
UBig	Unsigned big integer.

Enums

ParseError

Parse error when parsing UBig or IBig.

Traits

Abs	Absolute value.
AndNot	Bitwise AND NOT operation.
DivEuclid	Compute Euclidean quotient.
DivRem	Compute quotient and remainder at the same time.
DivRemEuclid	Compute Euclidean quotient and remainder at the same time.
NextPowerOfTwo	Next power of two.
RemEuclid	Compute Euclidean remainder.
UnsignedAbs	Unsigned absolute value.