X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=NEWS;h=c9a95422feda1058b2f709733d173f830a729d5f;hp=11a1966ad9c155e8799ddccb5b15805d54649891;hb=a2640180df383b9a47ac3b4b489ce100eceef345;hpb=0cf43f3096cbcfc7472ff9c8927c6eb74f2eeb8c diff --git a/NEWS b/NEWS index 11a1966a..c9a95422 100644 --- a/NEWS +++ b/NEWS @@ -1,26 +1,60 @@ This file records noteworthy changes. -0.9.1 () +1.0.0 (6 November 2001) +* Some internal reorganization resulting in a general speed-up. +* The last 3 evaluated expressions in ginsh are now referred to with the + tokens '%', '%%' and '%%%'. The old '"', '""' and '"""' remain for + compatibility but may be removed in a future version of GiNaC. + +0.9.4 (20 September 2001) +* Functions have better support for external scripting languages. +* Interface cleanups and bugfixes. +* Fix silly bug in evalf() that prevented things like 2^Pi being computed. + +0.9.3 (16 August 2001) +* series expansion now much more consistent for small order expansion. +* lsolve() accepts algorithmic hint as parameter. + +0.9.2 (31 July 2001) +* Epsilon tensor is more functional. +* simplify_indexed() is better at detecting expressions that vanish for + symmetry reasons. +* Several little bugfixes and consistency enhancements. + +0.9.1 (27 June 2001) +* Ctors of class numeric are not explicit any more. All built-in callers for + pseudofunctions are now templated and default to ex arguments which relaxes + the need for explicit ctors. * New functions/methods: - - remove_first() and remove_last() for lists + - find() + - remove_first(), remove_last(), sort() and unique() for lists - symmetrize_cyclic() + - decomp_rational() * Instead of just totally symmetric or antisymmetric, complex symmetries can now be defined for indexed objects. Symmetries are described by a tree of "symmetry" objects that is constructed with the sy_none(), sy_symm(), sy_anti() and sy_cycl() functions. The symmetry of a function with respect to its arguments can also be defined (this is currently only used for the Beta function). -* color_trace() and dirac_trace() can be applied to a more general class - of expressions, e.g. using it on a relation will take the trace on both - sides etc. * Generalized map() to take a function object instead of a function pointer. This allows passing an arbitrary number of additional state to the function being called. +* color_trace(), dirac_trace(), diff(), expand(), evalf() and normal() work + better with container classes, e.g. using color_trace() on a relation will + take the trace on both sides, using diff() on a matrix differentiates every + element etc. +* diff() works properly with non-commutative products and indexed objects. +* New option flag "expand_function_args" for expand(). * Supplement some (now deprecated) macros by inlined template functions: - is_of_type(foo, type) -> is_a(foo) - is_ex_of_type(foo, type) -> is_a(foo) - is_exaclty_of_type(foo, type) -> is_exaclty_a(foo) - is_ex_exaclty_of_type(foo, type) -> is_exaclty_a(foo) + - ex_to_foobar(baz) -> ex_to(baz) +* rem(c, p[x], x) (c: numeric, p[x]: polynomial) erroneously returned p[x] + instead of c. +* Small bugfixes in pattern matching. +* Updated libtool to version 1.4. 0.9.0 (7 June 2001) * In the output and in ginsh, lists are now delimited by { } braces, and