Decision Workspace
formcalc vs mathexpr vs expr-solver-lib
Side-by-side comparison of Rust crates
42
formcalc
experimentalv0.1.0
A powerful formula evaluation engine with dependency management and parallel execution
50
mathexpr
experimentalv0.1.1
A fast, safe mathematical expression parser and evaluator with bytecode compilation
48
expr-solver-lib
growingv1.2.0
Mathematical expression evaluator with bytecode compilation and configurable numeric precision (f64 or 128-bit Decimal)
Core Metrics
| formcalc | mathexpr | expr-solver-lib | |
|---|---|---|---|
| Health Score | 42 | 50 | 48 |
| Total Downloads | 156 | 501 | 1.4K |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 2 | 7 |
| Releases | 1 | 2 | 7 |
| Last Updated | 119d ago | 142d ago | 216d ago |
| Age | 3m | 4m | 7m |
Health Breakdown
formcalc
Maintenance
7
Quality
13
Community
6
Popularity
3
Documentation
13
mathexpr
Maintenance
10
Quality
15
Community
7
Popularity
3
Documentation
15
expr-solver-lib
Maintenance
14
Quality
12
Community
8
Popularity
4
Documentation
10
Technical Details
| formcalc | mathexpr | expr-solver-lib | |
|---|---|---|---|
| Version | 0.1.0 | 0.1.1 | 1.2.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | MIT |
| Dependencies | 4 | 6 | 8 |
| Crate Size | 28KB | 27KB | 37KB |
| Features | 0 | 2 | 4 |
| Yanked % | 0.0% | 0.0% | 71.4% |
| Edition | 2021 | 2021 | 2024 |
| MSRV | — | 1.70 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •mathexpr leads with a health score of 50/100, but none of the options score above 80.
- •expr-solver-lib has the most downloads (1.4K), suggesting wider adoption.
- •formcalc, mathexpr are pre-1.0 — API may change.