1.9 KiB
1.9 KiB
num-bigint
Big integer types for Rust, BigInt and BigUint.
Usage
Add this to your Cargo.toml:
[dependencies]
num-bigint = "0.2"
and this to your crate root:
extern crate num_bigint;
Features
Implementations for i128 and u128 are only available with Rust 1.26 and
later. The build script automatically detects this, but you can make it
mandatory by enabling the i128 crate feature.
Releases
Release notes are available in RELEASES.md.
Compatibility
The num-bigint crate is tested for rustc 1.15 and greater.
Alternatives
While num-bigint strives for good performance in pure Rust code, other
crates may offer better performance with different trade-offs. The following
table offers a brief comparison to a few alternatives.
| Crate | License | Min rustc | Implementation |
|---|---|---|---|
num-bigint |
MIT/Apache-2.0 | 1.15 | pure rust |
ramp |
Apache-2.0 | nightly | rust and inline assembly |
rug |
LGPL-3.0+ | 1.18 | bundles GMP via gmp-mpfr-sys |
rust-gmp |
MIT | stable? | links to GMP |
apint |
MIT/Apache-2.0 | nightly | pure rust (unfinished) |