# Decimal - multi-precision decimal arithmetic library

Decimal is (yet another) multi-precision decimal arithmetic library, which aims to surpass BigDecimal. It provides simple, compact, fast, precise, stable and easy-to-use solution.

## Webpages

## Requirements

Ruby 1.9.3 / 2.0.0 / 2.1.x / 2.2.x / 2.3.x

## Install

With rubygems,

`sudo gem install decimal`

or to build by yourself,

```
ruby extconf.rb
make
sudo make install
```

Read INSTALL for less details.

## Examples

Use like Float with few exceptions including Decimal#divide.

```
require 'decimal'
N = 3 # larger N may take huge time and more inaccurate result
pi = 0
i = 0
loop do
term = (-1) ** i * Decimal(4).divide(2 * i + 1, N + 2, :down)
break if term.zero?
pi += term
i += 1
end
puts pi.round(N)
```

## License

Ruby's. See COPYING and BSDL for more details.