= Welcome to mathextra =

Functions from Mathematical Statistics, Special Functions, 
and miscellaneous functions useful in science and engineering.
Also the home of [source:trunk/blade BLADE], the Basic Linear Algebra D Expressions library.
For 3D applications developers, there another D library: 
[http://www.dsource.org/projects/helix Helix].

For discussion information, visit the mathextra 
[http://www.dsource.org/forums/viewforum.php?f=75 forum].


== Project Status ==

Development halted with [changeset:190 changeset 190] on 02-06-2009.

From a [/forums/viewtopic.php?t=2345 01-30-2007 forum post]:
 '''Subject: This project has been abandoned _in its current form_'''
  ...but most of it has already been incorporated into Tango. <g>

See also: [http://www.dsource.org/projects/tango/browser/trunk/tango/math]


== License ==
All source code is under the MIT license, and free for commercial and non-commercial use.

== Design Principles ==
The first priority is accuracy, followed by performance.
There is no value in providing results quickly if they are wrong.

* As far as possible, all functions attempt to provide full machine precision (80-bits on Intel/AMD CPUs).

* All functions return correct results for infinity, and for signed zero.

* Unit tests are provided for all functions, with >90% test coverage.

Functions are named with descriptive names, rather than traditional mathematical names. Mathematica was used as a reference for many of the names. camelCase is used, to be consistent with the D standard library.

== List of included functions ==

=== Mathematical Special Functions ===
gamma, logGamma.
beta.
productLog
elliptical functions
Bessel functions

=== Mathematical Statistics ===
Distributions and inverse distributions for the most common probability distributions.
Complementary distributions (ie, 1-p) are provided to ensure high relative accuracy for near-unity probablities.
Currently, the following distributions are supported:

normal, poisson, studentsT, fisher, chiSquare, beta, gamma, incomplete gamma, binomial and negative binomial
distributions.
Inverse distributions are provided for all of the above.

=== Curve fitting and function analysis ===
findRoot
minimizeFunc
leastSquaresFit

=== Discrete Mathematics ===

=== Signal Processing ===
fastFourierTransform

=== Miscellaneous ===
bit manipulation