Decision Workspace
formcalc vs expr-solver-lib vs mathexpr
Side-by-side comparison of Rust crates
43
formcalc
experimentalv0.1.0
A powerful formula evaluation engine with dependency management and parallel execution
49
expr-solver-lib
experimentalv1.2.0
Mathematical expression evaluator with bytecode compilation and configurable numeric precision (f64 or 128-bit Decimal)
49
mathexpr
experimentalv0.1.1
A fast, safe mathematical expression parser and evaluator with bytecode compilation
Core Metrics
| formcalc | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Health Score | 43 | 49 | 49 |
| Total Downloads | 91 | 1.3K | 184 |
| 30d Downloads | 33 | 28 | 62 |
| Dependents | 0 | 7 | 1 |
| Releases | 1 | 7 | 2 |
| Last Updated | 60d ago | 157d ago | 83d ago |
| Age | 2m | 5m | 2m |
Health Breakdown
formcalc
Maintenance
9
Quality
13
Community
6
Popularity
2
Documentation
13
expr-solver-lib
Maintenance
16
Quality
11
Community
8
Popularity
4
Documentation
10
mathexpr
Maintenance
9
Quality
15
Community
7
Popularity
3
Documentation
15
Technical Details
| formcalc | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Version | 0.1.0 | 1.2.0 | 0.1.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT | MIT | MIT |
| Dependencies | 4 | 8 | 6 |
| Crate Size | 28KB | 37KB | 27KB |
| Features | 0 | 4 | 2 |
| Yanked % | 0.0% | 71.4% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | — | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •expr-solver-lib leads with a health score of 49/100, but none of the options score above 80.
- •formcalc, mathexpr are pre-1.0 — API may change.