Decision Workspace
umath vs lower vs approx_collections
Side-by-side comparison of Rust crates
42
umath
growingv0.0.7
ffast-math in rust
46
lower
growingv0.2.1
desugar math where the compiler wont
63
approx_collections
growingv4.1.0
Collections using approximate floating-point comparison
Core Metrics
| umath | lower | approx_collections | |
|---|---|---|---|
| Health Score | 42 | 46 | 63 |
| Total Downloads | 15.1K | 6.9K | 2.6K |
| 30d Downloads | 267 | 191 | 120 |
| Dependents | 42 | 16 | 3 |
| Releases | 8 | 7 | 8 |
| Last Updated | 895d ago | 140d ago | 14d ago |
| Age | 2y 5m | 2y 1m | 8m |
Health Breakdown
umath
Maintenance
7
Quality
10
Community
10
Popularity
5
Documentation
10
lower
Maintenance
11
Quality
11
Community
9
Popularity
5
Documentation
10
approx_collections
Maintenance
18
Quality
19
Community
10
Popularity
4
Documentation
12
Technical Details
| umath | lower | approx_collections | |
|---|---|---|---|
| Version | 0.0.7 | 0.2.1 | 4.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 0 | 1 | 5 |
| Crate Size | 7KB | 4KB | 28KB |
| Features | 0 | 0 | 2 |
| Yanked % | 50.0% | 14.3% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | — | — | 1.88.0 |
| Owners | 1 | 1 | 2 |
Links
Quick Verdict
- •approx_collections leads with a health score of 63/100, but none of the options score above 80.
- •umath has the most downloads (15.1K), suggesting wider adoption.
- •⚠ umath has not been updated in over a year.
- •umath, lower are pre-1.0 — API may change.