## Function: COMMON-LISP:RATIONAL
[![package](https://img.shields.io/badge/Package-COMMON--LISP-5f9ea0.svg?style=social&colorA=999999)](../) [![type](https://img.shields.io/badge/Type-Function-5f9ea0.svg?style=social&colorA=999999)](../#function) [![clhs](https://img.shields.io/badge/CLHS-RATIONAL-5f9ea0.svg?style=social&colorA=999999)](http://www.lispworks.com/documentation/HyperSpec/Body/a_ration.htm) [![github](https://img.shields.io/badge/GitHub-View_the_source-5f9ea0.svg?style=social&colorA=999999&logo=github)](https://github.com/sbcl/sbcl/blob/master/src/code/float.lisp/) 

> RATIONAL produces a rational number for any real numeric argument. This is
> more efficient than RATIONALIZE, but it assumes that floating-point is
> completely accurate, giving a result that isn't as pretty.

### Lambda list
```cl
(sb-kernel::x)
```