X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=NEWS;h=4f68317243fba028cae5d185dbd4d6331c3ef42f;hp=af84e795c70f2dd6ca4cd823b1db387a908d346c;hb=e64bfb923b62db2402ac8a078732e8f987bc6ec0;hpb=6818fc20b606266267ef5cf016d31599219151d9

diff --git a/NEWS b/NEWS
index af84e795..4f683172 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,41 @@
 This file records noteworthy changes.
 
-0.9.0 (<date>)
+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:
+   - 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).
+* 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
   matrices are delimited by single [ ] brackets.
 * simplify_indexed() renames dummy indices so, e.g., "a.i*a.i+a.j*a.j" gets