Crate features / num
Feature flags · num 0.4.3 · from crates.io 2026-10-24
num features: what each one does, and the line to copy
Short answernum 0.4.3 has 6 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.60 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
alloc | dep:num-bigint, num-rational/num-bigint | |
libm | num-complex/libm, num-traits/libm | |
num-bigint | dep:num-bigint | |
rand | num-bigint/rand, num-complex/rand | |
serde | num-bigint/serde, num-complex/serde, num-rational/serde | |
std | yes | dep:num-bigint, num-bigint/std, num-complex/std, num-integer/std, num-iter/std, num-rational/std, num-rational/num-bigint-std, num-traits/std |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version num declares (rust-version), and the release that changed it:
- 0.4.3 (2024-05-08): Rust 1.60
- 0.1.43 (2025-01-25): no rust-version declared
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p num --precise <version>, or use resolver 3, which picks compatible versions for you.
More on num
Real downloads, dependents and alternatives: num crate data (812K real downloads a day, 2,024 dependents).
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2021
Up next
Before you depend on itnum crate dataReal downloads, dependents, alternatives.Read it next →Did this answer your question?