Armadillo: C++ linear algebra library

	Armadillo C++ linear algebra library

About

Armadillo is a C++ linear algebra library (matrix maths) aiming towards a good balance between speed and ease of use. Integer, floating point and complex numbers are supported, as well as a subset of trigonometric and statistics functions. Various matrix decompositions are provided through optional integration with LAPACK and ATLAS libraries.

A delayed evaluation approach is employed (during compile time) to combine several operations into one and reduce (or eliminate) the need for temporaries. This is accomplished through recursive templates and template meta-programming.

This library is useful if C++ has been decided as the language of choice (due to speed and/or integration capabilities), rather than another language like Matlab ® or Octave. It is distributed under a license that is useful in both open-source and commercial contexts.

Armadillo is primarily developed at NICTA (Australia), with contributions from around the world.

NEWS

2009-10-26		Version 0.7.2 “Tequila Sunrise” Main changes: Added covariance and correlation functions Added simpler form of lu() Faster repmat() and reshape() Better detection of external libraries during installation

2009-10-07		Version 0.7.0 “Unshackled Mongrel” Main changes: Added the Cube class (aka "3D matrix" or a set of matrices with contiguous memory) Added creation of Mat instances using auxiliary memory Added repmat() Bugfixes for det() and lu()

2009-06-25		Version 0.6.12 “Ye Greene Beaste” Main changes: Added raw_print() and a collection of physical constants Code cleanup for better conformance to the C++ standard Miscellaneous documentation and installation improvements

2009-05-20		Version 0.6.11 Main changes: Bug fix for solve() when using complex numbers More elaborate class destructors for better debugging of user code Miscellaneous documentation and installation improvements

2009-05-02		Version 0.6.10 Main changes: Added eigen decomposition of generic (non-symmetric) matrices Function eig() renamed to eig_sym()

2009-04-23		Version 0.6.8 Main changes: Better installation on MacOS X Colour PPM images can now be loaded as fields of matrices

2009-04-08		Version 0.6.6 Main changes: Better installation on 64 bit systems, especially when using CMake 2.6 Fields of strings can be now loaded & saved as plain text files Bug fix for template detection of combined multiply and addition operations

2009-04-02		Version 0.6.4 Main changes: Added running_stat class for on-the-fly statistics Renamed main classes for better code readability Performance tweaks, which can result in speedups of 30% for small matrices

2009-03-26		Version 0.6.2 Fixes for interactions between matrices with different element types

2009-03-24		Version 0.6.0 Added functionality: solve(), for solving systems of linear equations svd(), singular value decomposition expressions can now have mixed matrix types complex number versions of statistics functions reworked operators, providing more flexibility Bug fixes: sign of scalar produced by det() handling of single row and column submats by statistics functions

earlier news ▾


2009-03-11		Version 0.5.2 Added functionality: subfields sort_index() Bug fixes: pow() applied to integer matrices (gcc < 4.3) multiplication of submats with a scalar missing division operators

2009-03-09		Version 0.5.0 Added functionality: Cholesky and QR decompositions element-wise division comparison operators more elegant restriction of template parameters Bug fixes: handling of diagonal matrices created from vectors compilation of examples under MacOS X Other changes: faster matrix inverse license change to LGPL v3+ updated and re-arranged documentation easier installation when using the .tar.gz package

2009-01-28		Version 0.4.0 Bug fixes and added functionality: easier configuration and installation statistics functions more functions for handling complex numbers

2009-01-16		Version 0.3.0 Added functionality: handling of complex numbers as well as other types added trigonometric functions

2008-12-23		Version 0.2.1 Fixes for several minor bugs.

2008-12-12		Version 0.2.0 More functionality, bug fixes and improved user documentation.

2008-11-04		Version 0.1.0 Initial proof-of-concept release.

Sponsors

©2009

<a href="http://nicta.com.au/people/sandersonc">Conrad Sanderson</a> <a href="http://freshmeat.net/projects/arma">Armadillo C++ Library on Freshmeat</a> <a href="http://nicta.com.au/research/projects/safe_as/armadillo">Armadillo C++ Library on NICTA</a>