This file records noteworthy changes.
-1.3.0 (<insert date>)
+1.6.2 (6 November 2011)
+* Fixed the parser to read GiNaC::lst again.
+* Fixed a compile warning (relevant to openSUSE build).
+* Fixed a bug concerning the subsitutions in indexed expressions
+ (subs_options::no_index_renaming was ignored).
+
+1.6.1 (18 July 2011)
+* Fixed several internal assertions for the debug version of GiNaC.
+* More verbose report of (auto-)configuration problems.
+* Fixed a compile problem with ginsh using gcc 4.6.
+
+1.6.0 (22 May 2011)
+* Fixed compilation issues with clang.
+* Fixed compilation issues with VC++.
+* Fixed a segfault in fsolve() and improved its numerical algorithm.
+* Fixed several memory leaks in power::eval().
+* Fixed the substitution algorithm that led to wrong results (exp(log(x))->x).
+* Fixed a bug in add:eval() (real_part() had returned wrong results).
+* Fixed infinite loop bug when unarchiving realsymbol and possymbol.
+* Fixed bugs in the GCD code.
+* Fixed empty string bug in symbol::get_name().
+* Fixed bugs concerning STL vector sizes that can potentially cause segfaults.
+* Fixed a bug in is_polynomial().
+* Removed autogen dependencies.
+* Improved simplify_indexed() algorithm.
+* Changed the connection between library version and package version.
+* power::series() can handle now more expressions with singularities in the exponent.
+* Added conjugate() methods to functions cosh, sinh, tanh.
+
+1.5.8 (06 July 2010)
+* Changed default behaviour of conjugate() for user-defined functions to avoid
+ wrong evaluations. A user-defined conjugate_func must now be explicitly
+ registered.
+* Fixed: Parser now handles abbreviations as advertized in the manual.
+* Fixed two bugs in the GCD code (one infinite loop, one miscalculation).
+* Fixed dangerous iterator use.
+* Fixed a memory leak in excompiler.
+* Fixed several syntax issues wrt to gcc 4.5 and wrt to compile option -std=cxx0x.
+* Fixed a wrong URL and a texinfo problem in the manual.
+* Added degree_vector() utility function.
+
+1.5.7 (29 March 2010)
+* Fixed a bug in the GCD code (infinite loop in pgcd()).
+* Fixed a bug in atan2() (division by zero error for atan2(x,0) if x is a
+ negative and composite term).
+* Products now correctly set info_flags::negative and info_flags::negint.
+
+1.5.6 (28 January 2010)
+* Fixed compile problem with gcc 3.4.
+* Improved excompiler: The ginac-excompiler script will only be installed if
+ excompiler is supported and enabled.
+
+1.5.5 (04 November 2009)
+* Correct libtool versioning.
+
+1.5.4 (02 November 2009)
+* Default parser now can again read in user defined classes.
+* Add mul::info() and add::info() support for numeric info_flags (GiNaC now can
+ detect that the sum or product of a number of positive expressions is again a
+ positive expression).
+* Fixed cast that caused compile error on 64bit machines.
+* Fixed incorrect uses of STL iterators.
+* Removed subdirectory debian.
+* Output LaTeX-symbols using \mathrm, instead of \mbox.
+
+1.5.3 (30 July 2009)
+* The parser now understands user-defined functions by default. The identifier
+ names can now contain underscores.
+
+1.5.2 (10 July 2009)
+* Fixed documentation of return_type_info()
+* Fixed cstdio include issue.
+* GiNaC now requires at least version 1.2.2 of cln.
+
+1.5.1 (25 February 2009)
+* Fixed compiling problems with GNU g++ 3.4.
+* Work around weird C++ RTTI behaviour on woe32 so GiNaC works on MinGW again.
+
+1.5.0 (17 February 2009)
+* Added polynomial factorization.
+* New, faster (recursive descent) expression parser.
+* Faster GCD computation.
+* gcd() now allows the user to override (some of the) heuristics.
+* Writing extensions classes is simpler now:
+ - Replaced custom RTTI by standard C++ RTTI.
+ - Definition of archiving methods now optional when declaring a new GiNaC class.
+* Fixed recursion in polynomial divide that caused a significant slowdown in
+ sqrfree().
+* Improved lsolve() of systems containing non-numeric coefficients.
+* Removed implicit conversions from cl_N to numeric.
+* Improved configuration and compatibility.
+
+1.4.4 (7 Nov 2008)
+* Fixed a bug in the multiple polylogarithms Li/G that caused imaginary parts
+ of the arguments to be ignored.
+* Fixed archiving of complex numbers.
+* Made the behaviour of class function more consistent with respect to
+ ncmul::eval().
+* Fixed bug in power::is_polynomial.
+* Improved heur_gcd() so it can handle rational polynomials.
+* Improved build scripts.
+
+1.4.3 (04 April 2008)
+* Fixed bug in numerical evaluation of multiple polylogarithms and
+ alternating multiple zeta values introduced in version 1.4.2.
+* Nielsen polylog now invalidates its lookup tables in case the precision
+ (Digits) has been changed.
+* Added new checks for recent bugs in the numerical evaluation of Li and zeta.
+
+1.4.2 (03 April 2008)
+* Fixed VPATH building of documentation.
+* Fixed bug in numerical evaluation of multiple polylogarithms for arguments
+ equal to certain roots of unity (thanks to Jianqiang Zhao).
+* Fixed check for memory leakage in parser.
+* Made internal function coerce() standard compliant.
+* Improved lsolve() of systems containing non-numeric coefficients.
+* Improved automatic test programs. Now they work on MinGW and Cygwin as well.
+
+1.4.1 (21 November 2007)
+* Fixed memory leak in ginac_yylex().
+* Fixed memory leaks in mul::eval() and power::eval().
+* Fixed macro checking for version of libreadline (Mac OS X).
+* Fixed broken preprocessor instruction in excompiler.cpp.
+* Fixed broken module loading in excompiler.cpp.
+* info(info_flags::has_indices) now works for sums and products.
+* Improved mul::expand().
+* Improved CLN output.
+
+1.4.0 (31 August 2007)
+* New tinfo mechanism.
+* Removed rtt from class symbol.
+* Faster archiving by adding a map from strings to indices in the atoms vector.
+* Improved unarchiving: algorithms order N instead of order N^2.
+* Added compile function, excompiler class.
+* Added exset type.
+* Added step function to GiNaCs built-in functions.
+* Added is_polynomial() method.
+* Added real_part() and imag_part() methods.
+* Added matrix::is_zero_matrix() method.
+* Added evalm() method to pseries class.
+* Improved dummy index renaming.
+* Many improvements for class clifford.
+* New flag for positive symbols/numbers, added possymbol class.
+* Added programming examples in doc/examples
+
+1.3.8 (28 August 2007)
+* Drop support of ginac-config and ginac.m4. Please use pkg-config instead.
+* atan2(y,x) branch cut correction.
+* Fixed bug in series expansion.
+* Additional transformations for mul and power.
+* Clifford units now honor representation labels.
+* Correct csrc output for idx and fderivative.
+* Improved handling of convergence transformationis for Li/G.
+* Fix compilation issues with prereleases of GCC 4.3.
+* info_flags::expanded added.
+* input_parser also accepts pow().
+* texinfo.tex removed from package.
+
+1.3.7 (05 February 2007)
+* Fixed bug in expansion of power.
+* Fixed bugs in functions S() (infinite loop), H() and zeta() (wrong results).
+* Rebuilt bison related files with bison version 2.3 (fixes parse error bugs).
+* Improved power::eval().
+* Improved libreadline detection.
+
+1.3.6 (13 December 2006)
+* Better worst case behavior in heuristic gcd.
+* Improved collecting for sparse multivariate polynomials.
+* Improved collect_common_factors.
+* Fixed bug in numerical evaluation of multiple polylogs.
+* Fixed numerical integration of complex functions.
+* Fixed bug in tensor::replace_contr_index().
+
+1.3.5 (17 August 2006)
+* Re-built bison related files that caused bugs with gcc 4.
+* Fixed bugs in fderivative::match_same_type(), expairseq::match(),
+ expand_dummy_sum(), and expairseq::map().
+* Fixed template specialization for class container to be gcc 4.2 compliant.
+* Output in csrc mode is now -x instead of -1.0*x.
+* Fixed tutorial and reference generation in html/pdf/ps format.
+* Modified autotool configuration to allow for compilation on MinGW.
+* Debian packaging files updated.
+
+1.3.4 (12 April 2006)
+* More general index dimensions are now possible.
+* Improved algebraic substitutions.
+* Fixed wrong matching in .has().
+* Fixed bug in differentiation of a power.
+* collect_common_factors also works with negative powers of common factors now.
+* Code clean-up and preparations for upcoming cln 1.2.
+
+1.3.3 (24 October 2005)
+* Fixed bug occuring in algebraic substitutions with expressions involving
+ indices.
+* Fixed bug that selected the wrong algorithm for determinants of purely
+ numeric matrices with at least one floating point element.
+* Fixed bug in function H that caused an infinite recursion for arguments
+ around +-I.
+* Fixed const-correctness in printing handler for GCC 4.0.2.
+* Made lookup in adaptivesimpson precision-aware.
+* Added series expansion for functions (classical) Li and S around x==0.
+* Added fsolve() numerical univariate real-valued function solver.
+* Added functions sub_matrix() and reduced_matrix().
+* Small cleanups. Less warnings with latest GCC.
+
+1.3.2 (10 July 2005)
+* GCD avoids to produce expanded expressions.
+* Fixed bug in expanding expressions containing dummy indices.
+* Fixed static initialization order bug.
+* collect_common_factors now works with powers.
+* Modernized configuration scripts.
+
+1.3.1 (04 May 2005)
+* integral() and eval_integ() can be used from ginsh.
+* Integrals can be series-expanded.
+* Fixed a library initialization problem.
+* GiNaC compiles from tarball even if lex/flex is missing.
+* Fixed bugs in canonicalize_clifford(), clifford_prime() and clifford_to_lst().
+* clifford_moebius_map(), remove_dirac_ONE() and LaTeX output of Clifford
+ objects now care about representation labels.
+* Fixed bug in gcd.
+* Better output for slashed expressions
+
+1.3.0 (19 October 2004)
+* The Clifford classes have been generalized to allow working with Clifford
+ algebras generated by arbitrary symmetric tensors or matrices. Also, a lot
+ of new functions for Clifford algebras have been added, including
+ automorphisms and Moebius transformations. [V. Kisil]
+* Added some basic symbolic and numeric integration facilities. [C. Dams]
+* The multiple polylogarithm Li() now evaluates numerically for arbitrary
+ arguments.
+* New functions G(a,y) and G(a,s,y) added (another notation for multiple
+ polylogarithms).
+
+1.2.4 (12 October 2004)
+* Added ex::unitcontprim() to compute the unit, content, and primitive parts
+ of a polynomial in one go.
+* binomial(n, k) evaluates for non-integer arguments n.
+* Li(2,x) now evaluates for +-I.
+* Optimized Li(2,x).
+* Fixed bug in Li(n,x) (if Li(2,x) was calculated with high precision the
+ enlargement of the look-up table caused a segmentation fault).
+* Fixed another bug in the series expansion of powers, and a bug in
+ power::info().
+
+1.2.3 (13 August 2004)
+* Added variants of dirac_trace() and color_trace() that take the trace over
+ more than one representation label by specifying a set or list of labels.
+* diracgamma::contract_with() uses Chisholm identities in 4 dimensions to
+ produce more compact results.
+* Fixed a bug in the series expansion of powers.
+* The --enable-html-doc and --enable-ps-doc configure options are gone.
+ Documentation in HTML, DVI, PostScript, and PDF formats is now built with
+ "make html", "make dvi", "make ps", and "make pdf", respectively. The only
+ documentation that gets built by default are the tutorial in .info format
+ and the manpages.
+
+1.2.2 (3 August 2004)
+* Added const_preorder_iterator and const_postorder_iterator classes (and
+ associated methods ex::pre/postorder_begin/end()) providing tree traversal
+ with iterators.
+* Fixed the LaTeX output of the varidx class.
+* Fixed bugs in series expansion and complex conjugation.
+* (p.i*p.i).get_free_indices() returns the correct result () instead of (.i).
+* Symbolic functions without any eval(), evalf() etc. functions now work
+ properly.
+* integer_content(), content(), and primpart() now also work for polynomials
+ with rational coefficients (calculating the LCM of coefficients'
+ denominators).
+* Added method matrix::rank().
+* Added function resultant().
+* Added integer_content() function to ginsh.
+
+1.2.1 (23 April 2004)
+* Fixed infinite recursion in atan2_evalf() and improved atan2_eval().
+* Added automatic evaluations for trigonometric functions with negative
+ arguments (e.g. sin(-2) -> -sin(2)).
+* Fixed a static initialization order goof-up.
+* Fixed various bugs in series expansion.
1.2.0 (19 March 2004)
* Added a structure<T> template class for the easy creation of user-defined
* Supplement some (now deprecated) macros by inlined template functions:
- is_of_type(foo, type) -> is_a<type>(foo)
- is_ex_of_type(foo, type) -> is_a<type>(foo)
- - is_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
- - is_ex_exaclty_of_type(foo, type) -> is_exaclty_a<type>(foo)
+ - is_exactly_of_type(foo, type) -> is_exactly_a<type>(foo)
+ - is_ex_exactly_of_type(foo, type) -> is_exactly_a<type>(foo)
- ex_to_foobar(baz) -> ex_to<foobar>(baz)
* rem(c, p[x], x) (c: numeric, p[x]: polynomial) erroneously returned p[x]
instead of c.
git://www.ginac.de / ginac.git / blobdiff