# Decimal - multi-precision decimal arithmetic library

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

## Download

Latest release is
0.1.0.
Download
the tarball or install with `gem(1)`

command.

## Webpages

## Requirements

Ruby 1.8.6 / 1.8.7 / 1.9.1 / 1.9.2

## 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 GPL for more details.

## Author

Tadashi Saito