Armadillo 3.2 - Changelog

What's new in Armadillo 3.2:

May 22nd, 2012

· faster eigen decomposition via "divide and conquer" algorithm
· faster transpose of vectors and compound expressions
· faster handling of diagonal views
· faster handling of tiny fixed size vectors (≤ 4 elements)
· added unique(), for finding unique elements of a matrix

What's new in Armadillo 3.0.3:

May 3rd, 2012

· fixes for inplace transpose of complex number matrices
· fixes for complex number version of svd_econ()
· fixes for potential aliasing issues with submatrix views

What's new in Armadillo 3.0.2:

April 19th, 2012

· fixes for handling diagonal matrices

What's new in Armadillo 3.0.1:

April 12th, 2012

· fixes for compilation errors
· fixes for potential aliasing issues

What's new in Armadillo 3.0.0:

April 10th, 2012

· added non-contiguous submatrix views
· added shorthand for inverse: .i()
· added hist() and histc()
· faster repmat()
· faster handling of submatrix views with one row or column
· faster generation of random numbers
· faster element access in fixed size matrices
· better detection of vector expressions by sum(), cumsum(), prod(), min(), max(), mean(), median(), stddev(), var()
· expressions X=A.i()*B and X=inv(A)*B are automatically converted to X=solve(A,B)

What's new in Armadillo 2.99.4:

April 4th, 2012

· fixes for handling expressions with fixed size matrices

What's new in Armadillo 2.99.3:

April 2nd, 2012

· faster repmat()
· workarounds for braindead compilers (eg. Visual Studio)

What's new in Armadillo 2.99.2:

March 29th, 2012

· added .i()
· much faster handling of .col() and .row()
· expressions X=A.i()*B and X=inv(A)*B are automatically converted to X=solve(A,B)

What's new in Armadillo 2.99.1:

March 19th, 2012

· added non-contiguous submatrix views
· added hist() and histc()
· faster handling of submatrix views
· faster generation of random numbers
· faster element access in fixed size matrices
· better detection of vector expressions by sum(), cumsum(), prod(), min(), max(), mean(), median(), stddev(), var()

What's new in Armadillo 2.4.4:

March 5th, 2012

· fixes for qr() and syl()
· more portable wall_clock class
· faster relational operators on submatrices

What's new in Armadillo 2.4.2:

December 12th, 2011

· clarified documentation for .reshape()
· fix for handling of empty matrices by .resize()

What's new in Armadillo 2.4.1:

December 8th, 2011

· added .resize()
· fix for vector initialisation

What's new in Armadillo 2.4.0:

December 5th, 2011

· added shorter forms of transposes: .t() and .st()
· added optional use of 64 bit indices, allowing matrices to have more than 4 billion elements
· added experimental support for C++11 initialiser lists
· faster pinv()
· faster inplace transpose
· faster handling of expressions with diagonal views
· fixes for handling expressions with aliasing and submatrices
· fixes for linking on Ubuntu and Debian systems
· fixes for inconsistencies in interactions between matrices and cubes
· refactored code to eliminate warnings when using the Clang C++ compiler
· .print_trans() and .raw_print_trans() are deprecated

What's new in Armadillo 2.3.92:

November 28th, 2011

· fixes for linking on Ubuntu and Debian systems
· fixes for inconsistencies in interactions between matrices and cubes

What's new in Armadillo 2.3.91:

November 14th, 2011

· added shorter forms of transposes: .t() and .st()
· added optional use of 64 bit indices, allowing matrices to have more than 4 billion elements
· added experimental support for C++11 initialiser lists
· faster pinv()
· faster inplace transpose
· bugfixes for handling expressions with aliasing and submatrices
· refactored code to eliminate warnings when using the Clang C++ compiler
· .print_trans() and .raw_print_trans() are deprecated

What's new in Armadillo 2.2.3:

August 27th, 2011

· fix for speed issue in as_scalar()

What's new in Armadillo 2.2.1:

August 2nd, 2011

· faster multiplication of small matrices
· faster trans()
· faster handling of submatrices by norm()
· added economical singular value decomposition: svd_thin()
· added circ_toeplitz()
· added .is_colvec() & .is_rowvec()
· fixes for handling of complex numbers by cov(), cor(), running_stat_vec

What's new in Armadillo 2.2.0:

August 2nd, 2011

· faster multiplication of small matrices
· faster trans()
· faster handling of submatrices by norm()
· added economical singular value decomposition: svd_thin()
· added circ_toeplitz()
· added .is_colvec() & .is_rowvec()
· fixes for handling of complex numbers by cov() & running_stat_vec

What's new in Armadillo 2.1.91:

July 22nd, 2011

· faster multiplication of small matrices
· faster trans()
· faster handling of submatrices by norm()
· added economical singular value decomposition: svd_thin()
· added circ_toeplitz()
· added .is_colvec() & .is_rowvec()

What's new in Armadillo 2.0.2:

July 16th, 2011

· fix for handling of conjugate transpose by as_scalar()
· fix for handling of aliasing by diagmat()
· fix for handling of empty matrices by symmatu()/symmatl()

What's new in Armadillo 2.0.0:

June 29th, 2011

· faster multiplication of tiny matrices (≤ 4x4)
· faster compound expressions containing submatrices
· faster inverse of symmetric positive definite matrices
· faster element access for fixed size matrices
· added handling of arbitrarily sized empty matrices (eg. 5x0)
· added loading & saving of matrices as CSV text files
· added .count() member function to running_stat and running_stat_vec
· added syl(), strans(), symmatu()/symmatl()
· added submatrices of submatrices
· det(), inv() and solve() can be forced to use more precise algorithms for tiny matrices (≤ 4x4)
· htrans() has been deprecated; use trans() instead
· API change: trans() now takes the complex conjugate when transposing a complex matrix
· API change: .is_vec() now outputs true for empty vectors (eg. 0x1)
· API change: forms of chol(), eig_sym(), eig_gen(), inv(), lu(), pinv(), princomp(), qr(), solve(), svd(), syl() that do not return a bool indicating success now throw std::runtime_error exceptions when failures are detected
· API change: princomp_cov() has been removed; princomp() in conjunction with cov() can be used instead
· API change: set_log_stream() & get_log_stream() have been replaced by set_stream_err1() & get_stream_err1()

What's new in Armadillo 1.99.5:

June 23rd, 2011

· Forms of chol(), eig_sym(), eig_gen(), inv(), lu(), pinv(), princomp(), qr(), solve(), svd(), syl() that do not return a bool indicating success now throw std::runtime_error exceptions when failures are detected
· princomp_cov() has been removed; princomp() in conjunction with cov() can be used instead
· set_log_stream() & get_log_stream() have been replaced by set_stream_err1() & get_stream_err1()
· det(), inv() and solve() can be forced to use more precise algorithms for tiny matrices (≤ 4x4)
· Added loading & saving of matrices as CSV text files

What's new in Armadillo 1.99.4:

June 6th, 2011

· fixes for handling of tiny matrices

What's new in Armadillo 1.2.0:

April 18th, 2011

· Added ability to use Blas & Lapack libraries with capitalised function names
· Reduction of pedantic compiler warnings

What's new in Armadillo 1.1.92:

March 31st, 2011

· Bugfix in cor()
· Automatic installation now requires CMake >= 2.6

What's new in Armadillo 1.1.90:

March 23rd, 2011

· Added .min() & .max(), which can provide the extremum's location
· More robust mean(), var(), stddev()

What's new in Armadillo 1.1.8:

March 10th, 2011

· Added floor() and ceil()
· Added “not a number”: math::nan()
· Added infinity: math::inf()
· Added standalone is_finite()
· Faster min(), max(), mean()
· Bugfix for a corner case with NaNs in min() and max()

What's new in Armadillo 1.1.6:

March 2nd, 2011

· fixed size matrices and vectors can use auxiliary (external) memory
· .in_range() can use span() arguments
· subfields can use span() arguments

What's new in Armadillo 1.1.4:

February 19th, 2011

· Faster sort()
· Updated installation to detect recent versions of Intel's MKL
· Added interpretation of arbitrary "flat" subcubes as matrices

What's new in Armadillo 1.1.2:

February 2nd, 2011

· Faster prod()
· Faster solve() for compound expressions
· Fix for compilation with GCC using the -std=c++0x mode
· Fix for matrix handling by subcubes

What's new in Armadillo 1.0.0:

November 23rd, 2010

· After 2½ years of collaborative development, we are proud to release the 1.0 milestone version.
· Many thanks are extended to all contributors and bug reporters.

What's new in Armadillo 0.9.90:

October 14th, 2010

· Added unsafe_col()
· Speedups and bugfixes in lu()
· Minimization of pedantic compiler warnings

What's new in Armadillo 0.9.80:

September 21st, 2010

· Added join_slices(), insert_slices(), shed_slices()
· Added in-place operations on diagonals
· Various speedups due to internal architecture improvements

What's new in Armadillo 0.9.70:

September 1st, 2010

· Added template based size specification
· Added insertion of rows & columns
· Added deletion of rows & columns
· Added set_imag() & set_real()
· Added in_range()
· Added is_empty()
· Various speedups, mainly in expressions involving submatrices
· Fixes for a few corner cases

What's new in Armadillo 0.9.52:

July 14th, 2010

· Bugfixes for saving complex cubes
· Workarounds to remove warnings under certain dodgy compilers

What's new in Armadillo 0.9.50:

July 7th, 2010

· Faster compilation by omitting Boost where possible
· Faster insertion into submatrices
· More accurate linspace()
· Deprecated rand() in favour of randu()
· Modified load() & save() to print warnings
· Added quiet_load() & quiet_save()
· Added conversions to/from std::vector
· Added convolution operation: conv()
· Added toeplitz()
· Added detection of MKL & ACML during installation
· Added MSVC project files for compiling examples

What's new in Armadillo 0.9.10:

June 2nd, 2010

· Speedups for find() and relational operators
· Speedups for expressions involving mixed matrix types
· More consistent success indication by decomposition functions

What's new in Armadillo 0.9.8:

May 14th, 2010

· Added handling of interactions between complex scalars and non-complex matrices
· Minor bugfixes for compilation issues under certain compilers

What's new in Armadillo 0.9.4:

March 16th, 2010

· Added cross()
· Bugfixes for inplace addition of particular vector multiplication expressions

What's new in Armadillo 0.9.2:

March 2nd, 2010

· Minor speedups
· Added princomp_cov()
· Bugfixes in complex-number versions of several functions

What's new in Armadillo 0.6.12:

June 25th, 2009

· Added raw_print() and a collection of physical constants
· Code cleanup for better conformance to the C++ standard
· Workaround for NVIDIA's CUDA compiler
· Miscellaneous documentation and installation improvements

What's new in Armadillo 0.6.11:

May 20th, 2009

· more elaborate Mat class destructor for better debugging of user code
· bugfix for solve() when using complex numbers
· bugfix for documentation of sort() and sort_index()
· modified installation to check for version of Boost libraries
· cleaned up rpm spec file

What's new in Armadillo 0.6.8:

April 25th, 2009

· Better installation on Mac OS X.

What's new in Armadillo 0.6.6:

April 9th, 2009

· fields of strings can now loaded & saved as plain text files
· better handling of 64 bit systems, especially when using CMake 2.6
· bug fix for template detection of combined multiply and addition operations

What's new in Armadillo 0.6.4:

April 3rd, 2009

· Added 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.

What's new in Armadillo 0.6.2:

March 26th, 2009

· Fixes for interaction between matrices with different element types.

What's new in Armadillo 0.6.1:

March 25th, 2009

· Fixes for interaction between matrices with different element types.

What's new in Armadillo 0.6.0:

March 24th, 2009

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

What's new in Armadillo 0.5.2:

March 11th, 2009

Added functionality:
· subfields
· sort_index()

Bug fixes:
· pow() applied to integer matrices (gcc < 4.3)
· multiplication of submats with a scalar
· division involving scalars

What's new in Armadillo 0.5.0:

March 10th, 2009

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

What's new in Armadillo 0.4.0:

January 29th, 2009

· easier configuration and installation
· statistics functions: mean, median, var, sd
· more functions for handling complex numbers: conj, cx_abs, htrans
· other functions: sort, dot, norm_dot, norm

What's new in Armadillo 0.3.0:

January 16th, 2009

· handling of complex numbers as well as other types
· added trigonometric functions