Learn how easy it is to sync an existing GitHub or Google Code repo to a SourceForge project! See Demo


[62db13]: ChangeLog-2008 Maximize Restore History

Download this file

ChangeLog-2008    1349 lines (977 with data), 53.0 kB

2008-12-11  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/matfunc.cpp, itpp/base/matfunc.h: Add missing template

	The templates is_hermitian() and is_unitary() had extern
	instantiations in the header file, but were never instantiated in
	the corresponding source file, which lead to linking errors when
	using these functions.

	This patch fixes this bug (#2392728) by adding the corresponding
	template instantiations in matfunc.cpp.

	Signed-off-by: David Hammarwall <davidhammarwall@users.sourceforge.net>

	* itpp/stat/misc_stat.cpp, itpp/stat/misc_stat.h: Improve
	performance of the Frobenius norm.

	The implementation of the Frobenius norm calculation for matrix M
	was done by multiplying M' times M and then throwing away
	everything but the diagonal. This was definitely not the optimum
	way to calculate.

	Signed-off-by: Bo Lincoln <blincoln@users.sourceforge.net>

2008-12-02  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/bch_test.ref, tests/blas_test.ref, tests/channel_test.ref,
	tests/cholesky_test.ref, tests/circular_buffer_test.ref,
	tests/convcode_test.ref, tests/converters_test.ref,
	tests/det_test.ref, tests/eigen_test.ref, tests/fastica_test.ref,
	tests/filter_design_test.ref, tests/filter_test.ref,
	tests/histogram_test.ref, tests/interleaver_test.ref,
	tests/inv_test.ref, tests/ldpc_test.ref, tests/ls_solve_test.ref,
	tests/lu_test.ref, tests/mat_test.ref, tests/matfunc_test.ref,
	tests/modulator_nd_test.ref, tests/modulator_test.ref,
	tests/poly_test.ref, tests/pulse_shape_test.ref,
	tests/qr_test.ref, tests/rand_test.ref,
	tests/reedsolomon_test.ref, tests/schur_test.ref,
	tests/sigfun_test.ref, tests/sort_test.ref, tests/sparse_test.ref,
	tests/specmat_test.ref, tests/stat_test.ref, tests/svd_test.ref,
	tests/transforms_test.ref, tests/turbo_test.ref,
	tests/vec_test.ref: Update test reference files for the new RNG

	* itpp/base/random.cpp, itpp/base/random.h: Replace random_01*
	with genrand_* methods.

	random_01(), random_01_lclosed() and random_01_rclosed() methods
	are only backward compatible wrappers for genrand_open_open(),
	genrand_close_open() and genrand_open_close(). Besides, the
	semi-closed methods are a little bit faster, therefore prefer
	genrand_close_open() and genrand_open_close() where appropriate.

	* itpp/base/random.cpp, itpp/base/random.h,
	itpp/base/random_dsfmt.h, itpp/base/sources.mk: Add DSFMT
	implementation of random number generator.

	The DSFMT class implements parts of the Double precision
	SIMD-oriented Fast Mersenne Twister (dSFM) random number
	generator. DSFMT directly generates double precision floating
	point random numbers, which have the IEEE 754 floating-point
	format. Besides, unsigned integer numbers can also be directly
	generated using genrand_uin32() method.

	This implementation is 1.8-2.4 times faster than the previous MT

	Thanks to Mutsuo Saito and Makoto Matsumoto from Hiroshima
	University for their original implementation in C, which is a base
	for this C++ DSFMT class.

2008-12-01  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/binfile.cpp, itpp/base/math/misc.cpp,
	itpp/base/math/misc.h, itpp/srccode/audiofile.cpp: Rename
	check_big_endianness() to is_bigendian().

	check_big_endianness() function is still available for backward
	compatibility, but marked as deprecated.

2008-11-13  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/timing.cpp, itpp/base/vec.cpp, itpp/fixed/cfix.cpp,
	itpp/fixed/fix.cpp: Add missing #include files required by GCC 4.4

	GCC 4.4 cleaned up some more C++ headers. Required header files
	have to be included explicitly.

	Signed-off-by: Martin Michlmayr <tbm@cyrius.com>

2008-11-12  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/signal/transforms.cpp: Let IT++ compile and link with MKL 10.1.

	The updated MKL 10.1 package defines DftiCreateDescriptor macro in
	mkl_dfti.h header file, which caused compilation errors in IT++
	transforms.cpp file. This patch fixes this problem.


2008-10-08  Adam Piatyszek  <ediap@users.sourceforge.net>

	* IT++ 4.0.6 release (SVN tag: release-4-0-6)

	* NEWS, VERSION: Add release notes and update version number for
	IT++ 4.0.6.

	* itpp/itpp_acml_tests/Makefile.am, itpp/itpp_mkl_tests/Makefile.am:
	Add specmat_test.vcproj files to the list of distributed files.

2008-10-05  Erik G. Larsson  <erik_g_larsson@users.sourceforge.net>

	* doc/local/verification.doc: Added Ubuntu 8.04 to list of tested

	* doc/local/installation.doc: Minor fix

2008-09-17  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/mat.h, itpp/base/vec.h: Do not explicitly inline
	elem_mult_inplace() when using MSVC++.

	This is a workaround for a warning reported by Microsoft Visual
	C++ Express 2008.

	* win32/itpp_acml.sln, win32/itpp_mkl.sln: Use CRLF line endings
	in MSVC++ solution files.

	* win32/itpp_acml_tests/itpp_acml_tests.sln,
	win32/itpp_mkl_tests/specmat_test.vcproj: Add MSVC++ project files
	for specmat_test.

2008-09-12  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/Makefile.am, tests/specmat_test.cpp,
	tests/specmat_test.ref: Add specmat_test program for testing
	special vectors and matrices.

	Initially only toeplitz() function is tested.

	* itpp/base/specmat.cpp, itpp/base/specmat.h: Fix broken
	implementation of toeplitz() function.

	The previous implementation generated incorrect matrices for two
	complex-valued input vectors. This patch fixes this problem. BTW,
	the implementation is now based on a template function, so bmat,
	smat and imat matrices can now be generated.

	Thanks to Niklas Johansson for reporting this issue. This closes
	bug report [2110119].

2008-09-01  Adam Piatyszek  <ediap@users.sourceforge.net>

	* test/vec_test.cpp, test/vec_test.ref: Revert part of SVN
	revision 1613.

	I/O stream labels for infinity and not-a-number have different
	case sensitivity in various supported GCC versions ("inf" vs.
	"Inf", "nan" vs. "NaN"). Thus we can not test for them in a vector
	initialisation from string.

2008-08-30  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/itassert.h: Get rid of config.h dependency from
	itassert.h header file.

	* itpp/comm/galois.cpp: Fix bug in GF::set_size() method, which
	was reported by Stephan Ludwig.

	Because "alphapow" and "logalpha" are static variables, every
	instantiation of the GF class uses the very same of them. If
	different instantiations of different Galois fields access this
	(e.g. 2^8 and 2^6, while 2^6 has been created first), the latter
	might overwrite/delete the log table of the previous while calling
	GF::set_size() method (2^8 widens the array to m+1=9, while not
	copying the 2^6 entries). The solution is to copy the contents of
	"alphapow" and "logalpha" when resizing them.

	Thanks to Stephan Ludwig for noticing this problem and also to
	EndZone for confirming it.

	* itpp/base/sort.h: Make sort() and sort_index() work for vectors
	with less than two elements.

	Without this patch, the above two functions resulted in an
	assertion error. Thanks to Yngve Seln for reporting this problem.

2008-08-18  Erik G. Larsson  <erik_g_larsson@users.sourceforge.net>

	* extras/gdb_macros_for_itpp, extras/Makefile.am: added GDB
	debugger display macros for it++ data types.

	This closes feature request [1913404]. Thanks to Vasek for
	providing an initial version of the macros.

2008-08-11  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/vec_test.cpp, tests/vec_test.ref: Modified existing and
	added new tests of vector initialisations with string

	* tests/vec_test.cpp, tests/vec_test.ref: Fix vector
	initialisation test with "a:b" format when a > b

	This test is not valid with the new string parser implementation,
	because negative decrements have to be explicitly gived as 'b' in
	"a:b:c" format string. This is consistant with GNU Octave way of
	parsing such strings.

	* itpp/base/vec.cpp, itpp/base/vec.h: String parser reimplemented
	to support multiple "a:b:c" format strings

	The new implementation supports multiple "a:b[:c]" formats in one
	string. For instance:
	  ivec v = "1:2:5, 6 8 9:-1:0";
	now works.

	Memory handling is also more efficient, i.e. for the cases when
	"a:b:c" format is not used, memory is allocated only once.
	Besides, the new implementation should be easier to maintain,
	because the code is much more modular.

	This patch resolves feature request [2041480].

	* win32/itpp_acml.vcproj, win32/itpp_acml_tests/*.vcproj,
	win32/itpp_mkl.vcproj, win32/itpp_mkl_tests/*.vcproj: Suppress
	warnings about deprecated "/Wp64" options in MSVC++ project files

2008-08-10  Adam Piatyszek  <ediap@users.sourceforge.net>

	* doc/tutorial/src/ldpc_bersim_awgn.cpp: Add missing "LL" suffix
	to 64-bit inteager initialisation

	This eventually fixes integer overflow error in LDPC BER
	simulation tutorial example.

2008-08-09  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/stat/mog_diag.h: Suppress a minor warning reported by

	* doc/tutorial/src/ldpc_bersim_awgn.cpp: Fix minor problem with
	integer overflow in expression

	The initialisation of int64_t variable with a multiplied inteager
	constants caused an integer overflow of the temporary calculation
	result. This patch fixes this issue by using one big constant
	in the initialisation.

2008-08-07  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/vec.h, tests/vec_test.cpp, tests/vec_test.ref: Fix
	regression [2041474] in Vec<>::split() method

	In IT++ 3.10.x releases it was possible to split a vector at its
	end, e.g.:
	  vec v1 = "1 2 3 4 5";
	  vec v2 = v1.split(5);
	In the current stable branch (4.0.x) the above code results in an
	assertion. This patch fixes this regression and also improves the
	documentation, so it is clearly explained which elements are
	returned and which are stored in the original vector.

	Besides, the vec_test program now includes a new test for
	splitting a vector at pos = 0 and pos = datasize.

	Thanks to Yngve Selén for reporting this bug.

2008-08-02  Adam Piatyszek  <ediap@users.sourceforge.net>

	* m4/acx_blas.m4: MKL requires zdotusub Fortran wrapper function
	on x86_64 architecture

	This fixes broken blas_test and vector_test on 64-bit linux
	architectures when IT++ is linked to Intel MKL BLAS library. This
	fix is equivalent to passing "--with-zdotu=zdotusub" option to


2008-07-18  Adam Piatyszek  <ediap@users.sourceforge.net>

	* NEWS, VERSION: Add release notes and update version number for
	IT++ 4.0.5

	* tests/vec_test.cpp, tests/vec_test.ref: Add a test-case to
	reproduce bug [2017948]

	* itpp/base/vec.cpp: Fix bug [2017948] in parsing error of "a:b:c"
	ivec initialisation

	There was a bug in vec.cpp that caused an assertion error when
	integer vectors were initialized using the "a:b:c" notation. For
	example: ivec iv = "0:2:4"; raised an exception. This patch fixes
	this bug by removing an unnecessary "seekg" operation.

	Thanks to David Hammarwall for reporting the problem and solution
	to it.

2008-07-11  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/mat.h: Fix bug [2004345] causing incorrect result of

	In case when one of the input matrices to concat_horizontal() or
	concat_vertical() functions was empty, an error occurred. With
	this patch the result of concatenating an empty matrix with
	some other matrix is defined and a copy of the other matrix is
	returned. This fixes bug [2004345].

	Thanks to Carlos Pineda for reporting this problem.

	* itpp/base/mat.h: Reset number of rows/columns if one of the
	dimensions given to Mat::set_size() is zero

	Without this patch, the Mat::set_size() function set number of
	rows or cols to non zero value, even if the other matrix
	dimension was zero. This was not compatible with the constructor.
	Besides, setting one of the dimensions of a matrix to non zero
	value, if the other one is zero does not makes sense and might
	cause problems with other functions operating on matrices. This
	patch fixes this problem.

2008-06-17  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/bch.cpp: Fix bug [1995743] in BCH::decode() function

	The second argument of
	  if ((delta == GF(n + 1, -1)) || (OldLambda.get_degree() > kk))
	takes the degree of OldLambda. But get_degree() does not return
	the true degree of that polynomial but its allocated space.
	GFX::get_true_degree() does what we want.

	If OldLambda's "degree" is larger than its "true degree", a wrong
	decision is made in the if statement, resulting in a wrong
	Lambda(x), which in general leads to a decoding failure, while the
	code word should have been correctable in theory.

	This patch fixes this bug and also removes a redundant "temp"

	Signed-off-by: Stephan Ludwig <donludovico@users.sourceforge.net>

2008-06-12  Adam Piatyszek  <ediap@users.sourceforge.net>

	* AUTHORS, doc/local/authors.doc: Add Stephan Ludwig (donludovico)
	to the list of contributors

	* itpp/comm/bch.cpp, itpp/comm/bch.h, tests/bch_test.cpp:
	Auto-calculate the BCH generator polynomial from (n, t) parameters

	This patch improves the previous patch, so only n (codeword
	length) and t (error-correcting capability) parameters are
	required to specify a particular BCH code. The generator
	polynomial and k (message word length) are calculated

	The new constructor does no longer break the implicit cast
	ivec("...") of the generator polynomial parameter in the old

	Signed-off-by: Stephan Ludwig <donludovico@users.sourceforge.net>

2008-06-09  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/bch.cpp, itpp/comm/bch.h, tests/bch_test.cpp:
	Auto-calculate the BCH generator polynomial from (n, k, t)

	Beside the known Parameters n (codeword length), k (message word
	length), t (designed error-correcting capability) the actual BCH
	class needs to be handed over the generator polynomial in octal
	form. This can be very long for some codes and thus hard-copying
	from textbooks often leads to copying errors.

	Since the generator polynomial is unique (as far as I know) for
	given parameters n, k, t, this generator polynomial can be
	calculated during instantiation of the BCH class - given the
	parameters n, k, t. Thus, copying errors can be avoided. This new
	feature is supplied as a second constructor for the BCH class by
	the attached patch. In other words: With the new constructor, you
	no longer have to pass on the generator polynomial but only the
	parameters n, k, and t. The constructor generates the generator
	polynomials according to Wicker: "Error control systems for
	digital communication and storage" as given in Appendix E of this
	book. The polynomials are also the same as in Lin/Costello: "Error
	control coding".

	Unfortunately, the usual call (cf. IT++ documentation), i.e.
	  BCH bch(31, 21, 2, "3 5 5 1");
	does no longer work, since both constructors confuse at run-time:
	The new constructor is called and the string is interpreted as
	bool systematic. The correct usage would now be:
	  BCH bch(31, 21, 2, ivec("3 5 5 1"));

	Signed-off-by: Stephan Ludwig <donludovico@users.sourceforge.net>

2008-06-05  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/hammcode.cpp, itpp/comm/hammcode.h,
	itpp/comm/sequence.cpp, itpp/comm/spread.h: Replace "short"
	variables with "int" to prevent implicit conversions

	MSVC++ warns about implicit conversions between "int" and "short"
	types, which can cause lost of data. Therefore use "int" type for
	indexing purposes as most of the IT++ codes do.

	* itpp/comm/modulator.cpp, itpp/comm/modulator.h: Remove redundant
	argument from calculate_softbit_matrices() function

	Since calculate_softbit_matrices() is a private method of a class,
	in which "bits2symbols" variable is also declared, there is no need
	to pass this variable as an argument of this method.

	* itpp/base/itfile.h, itpp/base/random.h, itpp/comm/bch.h,
	itpp/comm/rec_syst_conv_code.h, itpp/comm/reedsolomon.h: Suppress
	MSVC++ warning C4512: "assignment operator could not be generated"

	MSVC++ warns when an assignment operator can not be automatically
	generated because of constant variables existing in a class. To
	suppress this warning an dummy assignment operator can be added as
	in this patch.

	* itpp/base/vec.cpp, itpp/fixed/fix.cpp: Suppress MSVC++ warning
	C4701: "potentially uninitialized local variable..."

	* itpp/base/gf2mat.cpp, itpp/base/itfile.cpp, itpp/base/mat.h,
	itpp/base/math/misc.h, itpp/base/vec.h, itpp/comm/galois.cpp,
	itpp/srccode/audiofile.cpp, itpp/srccode/pnm.cpp: Suppress MSVC++
	warning C4244: "conversion from 'int' to 'char'..."

	Some of the expressions require explicit casts to "char". Where
	appropriate "int get()" method of iostream class is replaced with
	"get(char &)" function. Besides, GF::set_size() method is
	re-factored a little bit, so the "mtemp" integer variable is no
	longer necessary.

	* itpp/base/factory.h, itpp/base/mat.h, itpp/base/matfunc.h,
	itpp/base/timing.cpp, itpp/base/vec.h, itpp/comm/bch.cpp,
	itpp/comm/channel.cpp, itpp/comm/convcode.cpp,
	itpp/comm/egolay.cpp, itpp/comm/hammcode.cpp, itpp/comm/ldpc.h,
	itpp/comm/modulator.cpp, itpp/comm/punct_convcode.cpp,
	itpp/comm/reedsolomon.cpp, itpp/fixed/cfix.h, itpp/fixed/cfixed.h,
	itpp/fixed/fix.h, itpp/fixed/fix_functions.h,
	itpp/protocol/tcp.cpp, itpp/protocol/tcp.h,
	itpp/stat/misc_stat.cpp, itpp/stat/mog_diag.cpp,
	itpp/stat/mog_diag.h, itpp/stat/mog_diag_em.cpp: Suppress MSVC++
	warning C4100: "unreferenced formal parameter"

	This warning is suppressed by omitting named parameters in
	arguments of functions. Only types of parameters are passed.

	* configure.ac.in: Change default debugging flags to "-g -O1" or
	"-Wall -ggdb -O1 -pipe"

	The latter set is only used when GCC compiler is used, so it
	implicitly assumes that GDB debugger will be used in such a case.

2008-05-30  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/bch.cpp, itpp/comm/bch.h, tests/bch_test.cpp:
	Auto-calculate the BCH generator polynomial from (n, k, t)

	Beside the known parameters n (codeword length), k (message word
	length) and t (error-correcting capability), a generator
	polynomial in octal form needs to be handed over to the actual BCH
	class. This generator can be very long for some codes and thus
	copying by hand from textbooks often leads to errors.

	Since the generator polynomial is unique for given parameters (n,
	k, t), this generator polynomial can be calculated during
	instantiation of the BCH class. This new feature is supplied as a
	second constructor for the BCH class in this patch.

	The constructor generates the generator polynomials according to
	Wicker: "Error control systems for digital communication and
	storage" as given in Appendix E of this book. The polynomials are
	also the same as in Lin/Costello: "Error control coding".

	Unfortunately, the usual call BCH bch(31, 21, 2, "3 5 5 1"); does
	no longer work, since both constructors confuse at run-time: The
	new constructor is called and the string is interpreted as bool
	systematic (that's what I guess). The correct usage of the old
	constructor would now be BCH bch(31, 21, 2, ivec("3 5 5 1"));

	Signed-off-by: Stephan Ludwig <donludovico@users.sourceforge.net>

	* itpp/base/math/log_exp.h, itpp/srccode/gmm.h: Remove functions
	marked as deprecated before 3.10.7 release

	GMM::get_no_mixtures() was replaced a long time ago with
	GMM::get_no_gaussians(), whereas needed_bits() was replaced with
	either int2bits() or levels2bits(). Therefore it is the highest
	time to remove the deprecated interfaces in our development

2008-05-21  Adam Piatyszek  <ediap@users.sourceforge.net>

	* doc/local/users_guide.doc: Minor documentation fix in Users

	There is no such functions as swap_row() and swap_col() in IT++.
	swap_rows() and swap_cols() are the proper ones. This fixes bug
	[1968377]. Thanks to Allan Murray for reporting this issue.

2008-05-17  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/bessel/hyperg.cpp, itpp/base/itfile.cpp,
	itpp/base/random.cpp, itpp/comm/punct_convcode.cpp,
	itpp/fixed/cfix.cpp, itpp/fixed/fix.cpp, itpp/srccode/pnm.cpp,
	itpp/stat/mog_diag_em.cpp, itpp/stat/mog_diag_kmeans.cpp,
	itpp/stat/mog_generic.cpp: Fix GCC 4.3 warnings on "ambiguous
	else" due to missing braces

	The latest GCC compiler is much more picky when it comes to if/else
	statements without explicit braces. This results in a lot of warnings
	when "-Wall" flag is used. This patch adds missing braces or
	refactors code for which such warnings were reported by GCC 4.3.

2008-05-15  Adam Piatyszek  <ediap@users.sourceforge.net>

	* configure.ac.in: Set CXXFLAGS_DEBUG to CXXFLAGS when
	--enable-debug is not used

	This new behaviour is consistent with setting the same set of
	libraries for both the debug and optimised cases, when
	--enable-debug is not used. Besides, the CXXFLAGS_DEBUG variable
	is now documented when "configure --help" is used.

2008-05-09  Erik G. Larsson  <erik_g_larsson@users.sourceforge.net>

	* doc/tutorial/matlab_itpp.doc: Documentation improvement

2008-04-25  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/modulator_nd_test.cpp: Cosmetic fix - remove doubled

	* Unify coding style using an astyle source code formatter

	This huge patch is intended to unify the coding style for all IT++
	source and header files. The formatting has been performed with
	the astyle v1.22 program, using the configuration stored in
	extras/astylerc file.

2008-04-15  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/vec.h: Fix regression of a missing inline keyword in
	outer_product() specialisation

	The inline keyword is necessary for template specialisations that
	are defined in the header file. This bug resulted in linking
	problems without any external BLAS library, when this particular
	specialisation was used.

	Thanks to Markus Dittrich for investigating this problem and
	providing a patch for it on Gentoo Bugzilla (bug #217621).

2008-04-14  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/signal/fastica.cpp: Fix broken initialisation of
	Fast_ICA::set_init_guess() method

	The set_init_guess() now changes initState, which is checked in
	separate(), so that the provided guess is passed into the solver,
	rather than a zero matrix as before.

	This patch fixes bug report [1941219].

	Signed-off-by: Matthew Chaudhuri <mchaudhuri@users.sourceforge.net>

2008-04-09  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/converters.cpp, itpp/base/converters.h,
	itpp/base/itcompat.cpp, itpp/base/itcompat.h: Move rint() to

	This function is conditionally defined on platforms, which do not
	provide their own implementation. Therefore the best place for it
	is in itcompat.{cpp,h} files.

	* itpp/base/itcompat.h, itpp/base/math/trig_hyp.h,
	itpp/signal/poly.cpp, itpp/signal/window.cpp,
	itpp/base/itcompat.cpp: Move asinh(), acosh() and atanh() to

	These functions are conditionally defined on platforms, which do
	not provide their own implementations. Therefore the best place
	for them is in itcompat.{cpp,h} files.

	* itpp/base/itcompat.h, itpp/base/math/log_exp.h: Move log1p() and
	log2() definitions from log_exp.h to itcompat.h

	BTW, log2() now uses "static const double" variable initialised
	with the result of "1.0 / std::log(2.0)" division.

	* itpp/base/itcompat.cpp, itpp/base/itcompat.h,
	itpp/base/math/error.cpp, itpp/base/math/error.h: Move erf(double)
	and erfc(double) error functions to itcompat.{cpp,h}

	These functions are conditionally defined on platforms, which do
	not provide their own implementations. Therefore the best place
	for them is in itcompat.{cpp,h} files.

	* itpp/base/itcompat.cpp, itpp/base/itcompat.h,
	itpp/base/math/elem_math.cpp, itpp/base/math/elem_math.h: Move
	tgamma(), lgamma() and cbrt() definitions to itcompat.{cpp,h}

	These three functions are conditionally defined on platforms, which
	do not provide their own implementations. Therefore the best place
	for them is in itcompat.{cpp,h} files.

	* configure.ac.in, itpp/base/converters.h, itpp/base/itcompat.h,
	itpp/config_msvc.h: Move portability related definitions from
	config.h to itcompat.h

	* itpp/base/bessel/gamma.cpp, itpp/base/itcompat.h,
	itpp/base/math/log_exp.h, itpp/base/math/misc.cpp,
	itpp/base/math/misc.h, itpp/base/random.cpp,
	itpp/stat/mog_generic.cpp: Move isinf(), isnan() and isfinite()
	definitions to itcompat.h

	These three functions are conditionally defined on platforms,
	which do not have them in standard headers. Therefore, the best
	location for them in IT++ is the itcompat.h header file.

	* configure.ac.in, itpp/base/itcompat.cpp, itpp/base/itcompat.h,
	itpp/base/random.cpp, itpp/base/sources.mk, itpp/config_msvc.h,
	win32/itpp_acml.vcproj, win32/itpp_mkl.vcproj:
	Add implementation of expm1() function

	The expm1() function from C99 standard is not available in MSVC++
	compiler. This implementation is taken from the GNU Scientific
	Library (GSL) and will be only used on platforms that do not have
	their own expm1() function.

	* itpp/base/binfile.h, itpp/base/itcompat.h, itpp/base/itfile.h,
	itpp/base/ittypes.h, itpp/base/sources.mk, itpp/fixed/fix_base.h,
	itpp/itbase.h, win32/itpp_acml.vcproj, win32/itpp_mkl.vcproj:
	Rename ittypes.h to itcompat.h

	Beside fixed size integer type definitions, the new file
	itcompat.h will include all conditional implementations of
	functions, which are non available on various platforms and
	compilers, e.g. std::isfinite() or expm1().

2008-04-08  Adam Piatyszek  <ediap@users.sourceforge.net>

	* README, doc/local/index.doc.in: Reworded and rearranged the
	brief description of the IT++ library

	Thanks to Kumar Appaiah for some language suggestions.


2008-03-31  Adam Piatyszek  <ediap@users.sourceforge.net>

	* IT++ 4.0.4 release (SVN tag: release-4-0-4)

	* NEWS, VERSION: Add release notes and update version number for
	IT++ 4.0.4

	* win32/itpp_acml_tests/Makefile.am,
	win32/itpp_mkl_tests/Makefile.am: Add converters_test.vcproj to
	EXTRA_DISTS variable of Makefiles

	Without this patch, the project files for converters_test were not
	included in the distribution package.

2008-03-26  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/itfile_test.cpp: Remove setf(ios::scientific) and
	setf(ios::fixed) from itfile_test.cpp

	These two formatting options causes broken output of
	floating-point data when using MSVC++ Express 2008. In spite of
	the fact that this seems to be a bug in MSVC++ Express 2008,
	removal of these formatting options fixes this problem.

2008-03-25  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/itfile_test.cpp, tests/itfile_test_data.it: Improve
	itfile_test by using a non-continuous reference data file

	Such a data file is prepared by first saving a longer data structure
	(ivec in this case), then deleting it and finally saving a shorter
	data structure in the same place.

	* itpp/base/itfile.cpp: Do not duplicate seek operation after
	reading data_header fields

	When reading each field of a data_header structure of an IT++
	file, the reading position is automatically incremented. So, the
	additional seekg() operation afterwards is redundant. This small
	modification fixes a problem with endless loop while reading an
	itfile in programs compiled with MSVC++ 2008. Previous MSVC++
	version (2005) does not show this strange behaviour.

	* tests/Makefile.am, tests/converters_test.cpp,
	win32/itpp_mkl_tests/itpp_mkl_tests.sln: Create a simple test
	program of various conversion functions

	This test should catch possible incompatible implementation of the
	rint() function, which is not available under MSVC++ compiler.

	* itpp/base/converters.cpp, itpp/base/converters.h: Fix incorrect
	implementation of rint() function used under MSVC++

	The rint() function is not available under MSVC++ compiler. Thus,
	the local implementation has to be conditionally enabled for this
	compiler. This patch fixes the incorrect implementation of rint()
	function, which behaved like a similar round() function. It also
	moves the "double rint(double)" definition out of the itpp

2008-03-20  Adam Piatyszek  <ediap@users.sourceforge.net>

	* win32/itpp_acml.vcproj, win32/itpp_mkl.vcproj: Do not treat
	warnings as errors in MSVC++ projects

	This is a workaround for MS Visual C++ Express 2008 problem in
	compiling a correct piece of templated code.

	* itpp/base/algebra/cholesky.h, itpp/base/algebra/det.h,
	itpp/base/algebra/eigen.h, itpp/base/algebra/ls_solve.h,
	itpp/base/algebra/lu.h, itpp/base/algebra/qr.h,
	itpp/base/binary.h, itpp/base/binfile.h, itpp/base/copy_vector.h,
	itpp/base/gf2mat.h, itpp/base/itassert.h, itpp/base/itfile.h,
	itpp/base/ittypes.h, itpp/base/mat.h, itpp/base/sort.h,
	itpp/base/svec.h, itpp/base/vec.h: Minor spelling fixes in IT++
	base module documentation

	This commit fixes several little spelling mistakes in the IT++
	base module documentation.

	Signed-off-by: Kumar Appaiah <akumar@ee.iitm.ac.in>

2008-03-18  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/ldpc_test.cpp, tests/ldpc_test.ref: Minor workaround for a
	failing ldpc_test on win32 platforms

	MinGW and MSVC++ produce win32 executables, which use slightly
	different rounding approach for real numbers output through cout
	or cerr I/O streams. This patch just changes the precision of the
	output values, so the problematic case does not occur any more.

	* itpp/base/random.cpp, itpp/base/random.h, tests/rand_test.cpp,
	tests/rand_test.ref: Add implementation of Gamma(alpha, beta)
	random number generator

	The implementation of the Gamma_RNG::sample() function is taken
	from the R statistical language.

	Thanks to Vasek Smidl for providing the initial patch in feature
	request [1913411].

	* AUTHORS, doc/local/authors.doc: Add Vasek Smidl to the list of

	* itpp/base/operators.cpp: Fix complex constructors in
	operators.cpp to build with g++ 4.3

	It appears that g++ 4.3 is a bit more strict with respect to type
	checking when we attempt to overload the std::complex constructor for
	use with non-double types. Use of an explicit static_cast is needed to
	overcome this restriction. This patch does the needful by converting
	those constructors to use static_casts.

	Signed-off-by: Kumar Appaiah <akumar@ee.iitm.ac.in>

	* itpp/base/algebra/qr.cpp, itpp/base/algebra/qr.h,
	tests/qr_test.cpp, tests/qr_test.ref: Add qr() overloaded function
	that do not compute Q.

	For some tasks (triangularization) the Q matrix is not really needed.
	This patch implements an overloaded version of the qr() function
	that does not compute Q.

	Thanks to Vasek Smidl for submitting the patch.

2008-03-13  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/mat.h, itpp/base/vec.h: Fix it_assert_debug()
	conditions in elem_mult_out() methods of the Vec and Mat classes

	The checks for equal sizes of three and more variables can not be
	written like this: "a.size == b.size == c.size". The proper form
	is: "(a.size == b.size) && (a.size == c.size)". This patch fixes
	this bug. It also removes the redundant checks for different
	dimensions of a matrix before invoking the set_size(rows, cols)

	Thanks to Martin Senst for reporting this bug.

2008-03-12  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/ldpc.cpp, itpp/comm/ldpc.h: Simplify
	BLDPC_Parity::calculate_base_matrix() function

	The previous implementation used to create a temporary dense
	parity check matrix and then extracted Z by Z submatrices from it
	for further processing. With this patch, the temporary Z by Z
	submatrices are sparse and extracted directly from the sparse
	parity check matrix H. Besides, the checks for cyclic-shifted
	identity matrices are simplified. Therefore, an additional method
	circular_eye_b() is no longer needed.

	* itpp/comm/ldpc.cpp: Simplify BLDPC_Parity::expand_base()

	The previous implementation used to create a temporary dense
	parity check matrix and then copied its ones to the final sparse
	matrix. This patch changes the code so the sparse parity check
	matrix is constructed directly from the input base matrix.

	* tests/ldpc_test.cpp, tests/ldpc_test.ref: Add simple tests of
	BLDPC_Parity and BLDPC_Generator classes

2008-03-11  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/random.cpp, itpp/base/random.h: Move the
	implementation of Normal_RNG::sample() to the source file

	The implementation of Normal_RNG::sample() function is too
	complicated for inlining, so it should not be included inside the
	class declaration. This patch moves the actual code from the header
	file to the source file.

	* itpp/base/vec.h: Remove checks for different sizes before
	invoking set_size() function

	set_size() methods first checks if the requested new size differs
	from the current one. Therefore, there is no need to check this
	condition explicitly before invoking set_size() method.

2008-03-10  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/mat.h, itpp/base/vec.h: Decrease the number of inline
	functions in the Vec and Mat classes

	Overusing the inline keyword usually causes unnecessary code bloat,
	which results in a rather slower performance of the resulting
	code. Therefore, this patch reduces the number of inline functions
	and lefts only the ones which are really trivial or frequently

	* itpp/base/factory.cpp, itpp/base/factory.h,
	itpp/base/sources.mk, win32/itpp_acml.vcproj,
	win32/itpp_mkl.vcproj: Mark all create_elements() functions as
	inline ones

	These functions have 2-4 lines and are only used by alloc() and
	free() methods only, so we might gain more by inlining them
	instead of more general functions of Vec, Mat and Array classes.

2008-03-06  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/mat.h: Add missing get(int i) method to the Mat class

	This method returns a copy of the i-th element of the matrix
	using linear addressing, which is what the const version of
	operator()(int i) does.

	* itpp/base/mat.h: Add missing operator=(const std::string &) to
	the Mat class

	There is a Mat(const std::string &) constructor but the assignment
	operator for this type of argument has not been implemented. This
	patch adds this missing operator.

	* itpp/base/mat.cpp, itpp/base/mat.h: Add element-wise division
	operator with a scalar as the dividend

	This new operator complements a similar one, which performs
	element-wise division of a matrix by a scalar.

	* itpp/base/mat.h, itpp/base/matfunc.h, itpp/base/specmat.cpp,
	tests/mat_test.cpp, tests/mat_test.ref: Deprecate
	Mat<>::set_submatrix(r1,r2,c1,c2,m) function

	This function provides identical results as set_submatrix(r,c,m).
	Moreover, the r2 and c2 indexing arguments are redundant, because
	their values are determined by the size of the input matrix m.
	This patch marks this function as deprecated, for possible removal
	from future IT++ major releases.

	* itpp/base/mat.cpp, itpp/base/mat.h: Add in_range(r,c),
	col_in_range(c) and row_in_range(r) inline methods

	This is a pure clean-up patch which simplifies it_assert_debug()
	checks. BTW, it also includes a few cosmetic changes to other
	assertion checks.

	* itpp/base/mat.cpp, itpp/base/mat.h: Make consistent naming of
	variables used in the Mat class interface

	This patch unifies the variable names in the Mat class interface.
	The following names are now commonly used:
	- m, m1, m2, etc.: matrix
	- v: vector
	- t: simple numeric type Num_T, e.g. bin, int, double
	- r, r1, r2: row index
	- c, c1, c2: column index
	- i: generic index

	* itpp/base/mat.cpp, itpp/base/mat.h: Clean-up redundant use of
	"const" keyword in the Mat class

	There is no need for declaring the returned by value types with an
	additional "const" keyword. Moreover, Num_T is assumed a simple or
	built in type for the Mat class, i.e. bin, short int, int, double
	and complex<double>. Therefore it might be more efficient to pass
	arguments of this type by value, in which case the "const" keyword
	is also redundant.

	* itpp/base/vec.h: Deprecate elem_div(t,v) function of the Vec

	This function is only an alias to operator/(t,v). Besides, no
	similar methods for operator/(v,t), operator*(t,v) and
	operator*(v,t) exist.

	* itpp/comm/modulator.h, tests/modulator_test.cpp,
	tests/modulator_test.ref: Fix bug [1908644] in
	Modulator<>::set(symbols, bits2symbols) function

	The bitmap matrix used in the demodulate_bits() function of the
	Modulator<> base class was improperly constructed from the input
	bits2symbols mapping vector. This resulted in demodulation errors
	for some constellations, e.g. 64-QAM or 8-PSK. This patch fixes
	this problem.

	Thanks to Yann Cocheril for reporting this problem.

2008-03-04  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/llr.cpp, itpp/comm/llr.h: In case of an overflow
	saturate QLLR values instead of aborting

	An overflow may occur when converting real-valued LLR values into
	QLLR ones and also when calculating the Hagenauer's "boxplus"
	operator. This patch implements a conditional QLLR saturation in
	such cases. Moreover, the Boxplus() function is no longer an
	inline function, because this actually caused performance loss of
	the LDPC codes decoder.

	Finally, make the argument of to_double(QLLR) and to_qllr(double)
	pass-by-value instead of const-reference, since that's faster for
	POD like double and int.

	Thanks to Martin Senst for providing the initial patch.

2008-03-02  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/vec.cpp, itpp/base/vec.h: Clean-up redundant use of
	"const" keyword in the Vec class

	There is no need for declaring the returned by value types with an
	additional "const" keyword. Moreover, Num_T is assumed a simple or
	built in type for the Vec class, i.e. bin, short int, int, double
	and complex<double>. Therefore it might be more efficient to pass
	arguments of this type by value, in which case the "const" keyword
	is also redundant.

	Logical operators (==, !=, >, >=, < and <=) no longer create a
	local copy of the vector contents.

	By the way, use consistent name "t" for Num_T variables and wrap
	long lines before 80 column.

	* itpp/base/vec.h: Add missing operator=(const std::string &) to
	the Vec class

	There is a Vec(const std::string &) constructor but the assignment
	operator for this type of argument has not been implemented. This
	patch fixes this problem and unifies the argument names by the

	* doc/local/users_guide.doc, itpp/base/vec.h, tests/vec_test.cpp,
	tests/vec_test.ref: Add missing operator(bin_list) and
	get(index_list) methods to the Vec class

	This patch also simplifies the implementation so get() methods
	just call inline indexing "()" operators. The documentation and
	vec_test program are updated accordingly.

	* itpp/base/vec.h: Replace ((i < datasize) && (i >= 0)) with
	in_range(i) inline method

	This is a pure clean-up patch which simplifies it_assert_debug()
	checks. BTW, it also includes a few cosmetic changes to other
	assertion checks.

2008-02-28  Adam Piatyszek  <ediap@users.sourceforge.net>

	* AUTHORS, doc/local/authors.doc: Update list of contributors with
	Martin Senst and Kumar Appaiah

	* win32/itpp_acml_tests/Makefile.am,
	win32/itpp_mkl_tests/itpp_mkl_tests.sln: Add MSVC++ project files
	for test program of BERC and BLERC classes

	* tests/error_count_test.cpp: Clean-up redundant casts to short

	* tests/error_count_test.cpp: Use constructor's initialisation
	list in BERC and BLERC constructors

	* tests/Makefile.am, tests/error_count_test.cpp,
	tests/error_count_test.ref: Add simple test program for BERC and
	BLERC error counters

	* itpp/comm/error_counters.cpp, itpp/comm/error_counters.h: Make
	const member functions actually const

	Introduce the keyword const for member functions like
	get_errorrate() that do not change any member variables. Patch
	submitted by Martin Senst.

	* itpp/comm/channel.h: Unhide Fading_Generator::generate(int)
	method for derived classes

	The "cvec Fading_Generator::generate(int no_samples)" function
	used to be hidden. This change makes it accessible from derived
	classes. Patch submitted by Martin Senst.

	* itpp/base/converters.h: Add specialisations of to_cvec(cvec) and

	These specialisations make it possible to call to_cvec() and
	to_cmat() with complex arguments. The functions then simply return
	their argument. This fixes the problem with instantiating the
	Freq_Filt class with std::complex<double> type. Patch submitted by
	Martin Senst.

	* itpp/base/math/elem_math.h: Documentation improvements

	Clarify that sqr(cvec) and sqr(cmat) compute the absolute square,
	not simply the square. Patch submitted by Martin Senst.

	* itpp/comm/ldpc.h: Introduce LDPC_Code::get_ninfo() member

	This function returns the number of information bits in a
	codeword. Thanks to Martin Senst for submitting this patch.

	* itpp/comm/ldpc.cpp: Correct the length of the result of decode()

	The decode() function used to return the first "ncheck" bits of
	the decoded codeword, but we want the first "nvar-ncheck" bits.

	Thanks to Martin Senst for submitting this patch.

2008-02-25  Adam Piatyszek  <ediap@users.sourceforge.net>

	* doc/local/users_guide.doc, doc/tutorial/src/mimoconv.cpp,
	itpp/base/matfunc.h, itpp/base/vec.h, itpp/comm/crc.cpp,
	itpp/signal/filter_design.cpp, itpp/signal/freq_filt.cpp,
	itpp/signal/poly.cpp, itpp/signal/transforms.cpp,
	tests/vec_test.cpp, tests/vec_test.ref: Revert deprecation of
	replace_mid() method of Vec class

	Do not deprecate the replace_mid() method, because it is commonly
	used in many present codes. Just make it an alias function of
	set_subvector() one. BTW, replace all occurrences of
	set_subvector(i1, i2, &v) with set_subvector(i, &v).

	* itpp/base/vec.h: Add support for "-1" indexing in
	Vec<>::del(i1, i2) method

	The indexing operator(i1, i2) of Vec class supports "-1" indexes
	denoting the last element of a vector. This feature was missing
	in the del(i1, i2) method, and this patch fixes this. It also
	fixes the incorrect range check (i1 <= i2).
	By the way, remove the redundant local variables ii1 and ii2
	from the operator(i1, i2) method.

	* itpp/base/vec.h: Deprecate set_subvector(i1, i2, &v) and
	replace_mid(i, &v) functions

	These two methods of the Vec class do exactly the same what the
	set_subvector(i, &v) function does. Therefore it seems to be a
	good idea to mark them as deprecated for possible removal from
	future major releases of IT++.

2008-02-24  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/comm/modulator.h: Remove the deprecated
	demodulate_soft_bits_approx() functions

	Since IT++ 3.99.0 was releases, these functions have been marked
	as deprecated. The demodulate_soft_bits() functions should be used
	instead. This patch removes them from the current development

	* itpp/base/mat.cpp, itpp/base/mat.h, tests/mat_test.cpp,
	tests/mat_test.ref: Remove the deprecated multiplication operator

	The multiplication operator of a vector times a matrix with only one
	row was marked as deprecated in the current stable branch (itpp-4-0).
	Its functionality is identical to the outer_product of two vectors.
	It is time to remove it from our development branch.


2008-02-21  Adam Piatyszek  <ediap@users.sourceforge.net>

	* IT++ 4.0.3 released (SVN tag: release-4-0-3)

	* NEWS, VERSION: Release notes added and version number updated
	for IT++ 4.0.3

	* itpp/base/vec.h: Minor documentation fixes to prevent warnings
	of the Doxygen

2008-02-20  Adam Piatyszek  <ediap@users.sourceforge.net>

	* INSTALL, doc/local/installation.doc, itpp/base/blas.h,
	itpp/base/vec.cpp, itpp/base/vec.h, itpp/config_msvc.h,
	m4/acx_blas.m4: Removed non-portable "--with-zdotu=complex" method

	It seems that there is no portable solution for calling from C++
	the Fortran functions that returns a complex value. C99 introduces
	"double _Complex" type, which is compatible with Fortran COMPLEX.
	But this C99 type is not a valid C++ type. Therefore this patch
	removes the "complex" method from "--with-zdotu" option. The valid
	methods are now:
	- "zdotusub" - use a zdotusub_ Fortran wrapper function
	- "void" - compatible with BLAS libraries built with g77 compiler
	- "none" - do not use zdotu_ function at all

2008-02-19  Adam Piatyszek  <ediap@users.sourceforge.net>

	* INSTALL, configure.ac.in, doc/local/installation.doc,
	itpp/base/blas.h, itpp/base/vec.cpp, itpp/base/vec.h,
	itpp/config_msvc.h, m4/acx_blas.m4: Add "--with-zdotu" option to
	select zdotu_ calling convention

	The "--with-zdotu=<method>" option can be used to change the
	default calling convention of BLAS zdotu_ Fortran function. The
	BLAS libraries built with g77 compiler do not return the complex
	result of a function, but pass it via the first argument of the
	function. The implementations compiled with gfortran and other
	vendor compilers return complex result as a typical function. By
	using a "void" method with the "--with-zdotu=<method>" option, the
	former approach is used (g77 compatible). To use the zdotu_ call
	that returns the result by value, a "complex" method should be
	passed. Without setting any of the two methods explicitly, IT++
	tries to guess the proper method based on the detected BLAS
	implementation. Otherwise, a Fortran wrapper function zdotusub_ is
	used, which requires a working Fortran compiler. Finally, if this
	is not the case, the zdotu_ BLAS method is not used at all and a
	relevant warning message is displayed during the configuration

2008-02-18  Adam Piatyszek  <ediap@users.sourceforge.net>

	* autogen.sh: Cosmetic improvements

	Replace back-ticks `...` with POSIX shell syntax $(...). BTW,
	improve generation of a snapshot version string.

	* itpp/base/blas.h, itpp/base/vec.cpp, itpp/base/vec.h,
	itpp/config_msvc.h, m4/acx_blas.m4, m4/ax_func_zdotu.m4: Use
	zdotusub_ Fortran wrapper by default

	This patch removes the run-time checks for correct zdotu_ calling
	conventions, which caused a lot of portability problems in IT++
	4.0.1 and 4.0.2 releases. The preferred method is now to use the
	locally provided zdotusub_ Fortran wrapper (as in 4.0.0 release).
	This requires the availability of a Fortran compiler, unless an
	Intel MKL library is used, in which zdotu_ can be called directly
	from C++ without any problems. If no Fortran compiler is available
	and Intel MKL is not used, the zdotu_ function is not called at
	all. In such case, a relevant warning message is printed during
	the configuration step.

	* configure.ac.in, itpp/base/Makefile.am, itpp/base/sources.mk,
	itpp/base/zdotusub.f, m4/acx_blas.m4: Revert "Removed redundant
	zdotusub_ Fortran wrapper to zdotu_ function"


2008-02-15  Adam Piatyszek  <ediap@users.sourceforge.net>

	* IT++ 4.0.2 released (SVN tag: release-4-0-2)

	* NEWS, VERSION: Release notes added and version number updated
	for IT++ 4.0.2

	* ChangeLog-2007: Archive ChangeLog entries from year 2007

2008-02-14  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/parser.cpp, tests/parser_test.cpp,
	tests/parser_test.ref: Fix wrong verbose output of Parser's get()
	function for int and bool types

	When Parser was used to scan an already defined int or bool
	variable and the parsed variable was not found, the verbose
	output was wrong. Here is a minimum example:

          Parser p(argc, argv);
	  int i = 5;
	  bool b = true;
          p.get(a, "a");
	  p.get(b, "b");

	The wrong output of this program was:

	  i = [];
	  b = ;

	instead of:

	  i = 5;
	  b = 1;

	This patch fixes this problem and also improves the parser_test
	program, to detect such issues in future. Thanks to Jia-Yin for
	reporting this problem.

	* itpp/comm/convcode.h: Documentation improvements related to
	encoder state.

	This patch improves the documentation of the encoding and decoding
	functions. Especially, it clarifies why set_start_state() and
	init_encoder() methods have no effect on encode_tail() and
	encode_tailbite() functions.

	* itpp/comm/modulator.h: Improve the documentation of
	Modulator::get_bits2symbols() function

2008-01-31  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/gf2mat.cpp: Fix GF2mat_sparse_alist::from_sparse()
	conversion function

	The conversion function from GF2mat_sparse format to "alist" text
	file format could incorrectly create the "mlist" and "nlist"
	matrices with indexes of non-zero entries. This patch fixes this
	bug and also improves the conversion speed by using the
	get_nz_indices() function from Sparse_Vec class and set_row()
	instead of append_row() where possible.

2008-01-23  Adam Piatyszek  <ediap@users.sourceforge.net>

	* Makefile.am, VERSION, autogen.sh: Optionally append SVN revision
	to IT++ package version

	When bootstrapping IT++ sources from SVN or Git repositories
	append the SVN revision number to the package version string. This
	feature is triggered by including the additional "svn" keyword in
	at the end of the first line of the VERSION file.

	BTW, remove snapshot and snapshot-html top Makefile's targets.

2008-01-18  Adam Piatyszek  <ediap@users.sourceforge.net>

	* tests/poly_test.cpp, tests/poly_test.ref, tests/window_test.cpp,
	tests/window_test.ref: Change cout format to "fixed" and
	workaround precision problem on MinGW

	With this change, we can get rid of round_to_zero() workaround
	functions preventing precision differences when using MinGW. BTW,
	limit precision to 6 in poly_test to workaround precision problems
	when using MinGW/MSYS.

	* itpp/signal/poly.cpp: Add missing include file required when
	using MSVC++

	Without including itpp/base/math/trig_hyp.h, ::acosh() function is
	undefined under MSVC++.

2008-01-17  Adam Piatyszek  <ediap@users.sourceforge.net>

	* configure.ac.in, itpp/Makefile.am: Fix improper default shared
	and static settings

	Besides, do not add "-no-undefined" libtool switch to global
	LDFLAGS. Use NO_UNDEFINED substituted variable instead.

	* itpp/signal/window.cpp, itpp/signal/window.h,
	tests/window_test.cpp, tests/window_test.ref: Add Dolph-Chebyshev

	Add the chebwin() function to evaluate the coefficients of the
	Dolph-Chebyshev window. Testing routines implemented as well.

	The tests check the values output by the Dolph-Chebyshev window
	function for lengths 32 and 33 for 50 dB suppression and for
	lengths 127 and 128 at 25 dB suppression.

	Thanks to Kumar Appaiah for providing and improving the patches.
	This commit closes feature request [1869927].

	* itpp/signal/poly.cpp, itpp/signal/poly.h, tests/poly_test.cpp,
	tests/poly_test.ref: Add cheb() functions - first order Chebyshev

	The cheb() functions evaluates a first order Chebyshev polynomial
	at a specific point (or set of points in a vector/matrix). Also
	add a simple set of tests for the cheb() functions, and regenerate
	the reference results to match the new format output in fixed

	Thanks to Kumar Appaiah for providing and improving the initial
	patches from feature request [1869927].

2008-01-06  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/math/log_exp.h: Fix bug [1863940] in log_add()
	function for infinite arguments

	When both arguments of log_add() function were either inf or -inf,
	the result was NaN instead of +/-inf. This patch fixes this issue.

2008-01-04  Adam Piatyszek  <ediap@users.sourceforge.net>

	* itpp/base/math/misc.h: Add missing itpp namespace description

	Without this patch, Doxygen 1.5.4 did not generate any
	documentation for the itpp namespace.

2008-01-01  Adam Piatyszek  <ediap@users.sourceforge.net>

	* License change: GPLv2 -> GPLv3

	BTW, update Copyright years to `1995-2008'

	* configure.ac.in: Add support for building a DLL library on

	When libblas and liblapack are installed from Cygwin repository,
	it is possible to build IT++ as a DLL library. This requires
	"-no-undefined" flag to be passed to the linker.