This file records noteworthy changes.
-1.4.0 (<date>)
-* Better worst case behavior in heuristic gcd [Alexei Sheplyakov].
-* ...<please continue here>...
+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.
git://www.ginac.de / ginac.git / blobdiff