# kalk ![Crates.io](https://img.shields.io/crates/v/kalk_cli) ![GitHub](https://img.shields.io/github/license/PaddiM8/kalk) ![Docs.rs](https://docs.rs/kalk/badge.svg) Kalk is a calculator (both program and library) that supports user-defined variables and functions. ![](example.png) ## 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 `√`. * Sum function: `sum(start, to, expression)` Eg. `sum(1, 3, 2n+1)` is the same as `2*1+1 + 2*2+1 + 2*3+1` = `15` ## Installing Make sure you have `diffutils` `gcc` `make` and `m4` installed. ### Cargo install Run `cargo install kalk_cli` ### Compiling yourself 1. Go into the `kalk_cli` directory. 2. Run `cargo build --release` 3. Grab the binary from `targets/release`