X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=NEWS;h=e2f4e1859ffd7cf04830b8330e4f6dc43c9d0cd0;hp=240748d955f1f22069c1595478eae0a9b01bb4a2;hb=c13d5e0ed2ce6223bc6c4340bb00daf2e24ea923;hpb=4e8b826644676d33d27971885c0bba282e3ca07e diff --git a/NEWS b/NEWS index 240748d9..e2f4e185 100644 --- a/NEWS +++ b/NEWS @@ -1,8 +1,136 @@ This file records noteworthy changes. -1.4.0 () -* Better worst case behavior in heuristic gcd [Alexei Sheplyakov]. -* ...... +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.