https://github.com/boxbeam/crunch_eval

High-performance algebraic expression evaluator for Rust
https://github.com/boxbeam/crunch_eval

Last synced: 21 days ago
JSON representation

High-performance algebraic expression evaluator for Rust

• Host: GitHub
• URL: https://github.com/boxbeam/crunch_eval
• Owner: boxbeam
• Created: 2023-01-14T16:54:51.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2023-03-04T01:09:49.000Z (almost 2 years ago)
• Last Synced: 2024-11-05T23:09:27.641Z (2 months ago)
• Language: Rust
• Homepage:
• Size: 24.4 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# crunch_eval

High-performance algebraic expression evaluator.

## Basic usage:

```

use crunch_eval::expr::Expr;

let expr = Expr::compile("1 + 1").unwrap();

let val: f64 = expr.evaluate_blank().unwrap();

assert_eq!(val, 2.0);

```

## Benchmarks:

Expression: `6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4`

Time to compile long expression:

| compile     | time/op (µs) |

|-------------|--------------|

| crunch_eval | 13.56        |

| evalexpr    | 32.36        |

Time to evaluate long expression:

| eval        | time/op (ns) |

|-------------|--------------|

| crunch_eval | 2.97         |

| evalexpr    | 5.96         |

Expression: `double(x + 1)`

Time to evaluate expression with variable and function:

| eval        | time/op (ns) |

|-------------|--------------|

| crunch_eval | 48.46        |

| evalexpr    | 341.83       |