mirror of
https://github.com/PaddiM8/kalker.git
synced 2024-12-13 18:10:42 +01:00
31 lines
859 B
Markdown
31 lines
859 B
Markdown
# kalk
|
|
Kalk is a math parser library that supports user-defined variables and functions. An example of what it can parse:
|
|
|
|
```
|
|
f(x, y) = sum(1, 3, (2sin4/x!)^y) + cos(n deg)
|
|
a = 3
|
|
f(a, 2)
|
|
```
|
|
`>> 1.1899401098014355`
|
|
|
|
## Features
|
|
* Operators: +, -, \*, /, !
|
|
* Groups: (), ⌈⌉, ⌋⌊
|
|
* [Pre-defined functions and constants](https://github.com/PaddiM8/kalk/blob/master/kalk/src/prelude.rs)
|
|
* User-defined functions and variables. `f(x, y) = xy`, `x = 5`
|
|
* Understands fairly ambiguous syntax. Eg. `2sin50 + 2xy`
|
|
* Syntax highlighting
|
|
* Special-symbol completion on tab. Eg. write `sqrt` and press tab. It will be turned into `√`.
|
|
|
|
## Usage
|
|
```
|
|
use kalk::parser;
|
|
|
|
...
|
|
let parser_context = parser::Context::new();
|
|
assert_eq!(parser_context.eval("5*3").unwrap().unwrap(), 15);
|
|
```
|
|
|
|
## Compiling
|
|
Make sure you have `diffutils` `gcc` `make` and `m4` installed.
|