## Cut Corners

### Instructions

Create a function for each rounding math functions:

- round (like `Math.round`)
- ceil (like `Math.ceil`)
- floor (like `Math.floor`)
- trunc (like `Math.trunc`)

Some restrictions apply:

- You may not use strings conversion to do it
- No bitwise operator

### Notions

- [devdocs.io/javascript/global_objects/math](https://devdocs.io/javascript/global_objects/math)

### Code provided

> all code provided will be added to your solution and doesn't need to be submited.

```js
Math.round = Math.ceil = Math.floor = Math.trunc = undefined
```