NArray is a class of Numerical N-dimensional Array, providing fast and
efficient computing of the large data arrays.

Element types: Integer, Float, Complex and Ruby Object.

Methods: array manipulation, arithmetic operators and mathematical
functions (including FFTW and LU factorization).

Author:	Masahiro TANAKA <masa@ir.isas.ac.jp>
WWW:	http://www.ir.isas.ac.jp/~masa/ruby/index-e.html