* Fix bug in ctor from string, reported by Christopher Kennedy.

[ginac.git] / NEWS

diff --git a/NEWS b/NEWS
index e62d07386a8be0560beea6c81509f523ed1c6268..ae20f9843a5a7b919f0f00742f219ae533375f24 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,27 +1,60 @@
 This file records noteworthy changes.
 
-0.9.1 (<date>)
+0.9.5 (<date>)
+* 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<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)
   - 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.
+* 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