- Lewis-Wester tests D and E now benchmark the time to expand the

[ginac.git] / NEWS

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index 04f3e55989afc248f80462fe6bed88c346ec8532..a312179c66aa341724243f7429f2f422ff54a430 100644 (file)
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+++ b/NEWS
@@ -1,5 +1,50 @@
 This file records noteworthy changes.
 
+0.7.1 (--date--)
+* Fix problems with Cint that were caused by CLN's overloaded operator new.
+* Fix compilation errors with GCC3.
+
+0.7.0 (15 December 2000)
+* Requires CLN 1.1 now.  Class numeric doesn't use an indirect pointer to the
+  actual representation any more.  This is a speedup.
+* mul::expand() was reengineered to not allocate temporary excess memory.
+* Non-integer powers of a symbol are treated as constants by (l)degree() and
+  coeff().  Using these functions on an expression containing such powers used
+  to fail with an internal error message.  The side-effect is that collect()
+  can be used on expressions which are not polynomials.
+* Added a man page for the ginac-config script.
+* Ctor of numeric from char* honors Digits.
+
+0.6.4 (10 August 2000)
+* Complete revamp of methods in class matrix.  Some redundant (and poor)
+  implementations of elimination schemes were thrown out.  The code is now
+  highly orthogonal, more flexible and much more efficient.
+* Some long standing and quite nasty bugs were discovered and fixed in the
+  following functions: add::normal(), heur_gcd(), sr_gcd() and Order_eval().
+
+0.6.3 (25 July 2000)
+* Derivatives are now assembled in a slightly different manner (i.e. they
+  might 'look' different on first sight).  Under certain circumstances this
+  can result in a dramatic speedup because it gives hashing a better chance,
+  especially when computing higher derivatives.
+* Some series expansions of built-in functions have been reengineered.
+* The algorithm for computing determinants can be chosen by the user.  See
+  ginac/flags.h and ginac/matrix.h.
+* The Dilogarithm (Li2) now has floating point evaluation, derivative and a
+  proper series expansion.
+* Namespace 'std' cleanly disentangled, as demanded by ISO/EIC 14882-1998(E).
+* Some minor bugfixes, one major lsolve()-bugfix and documentation updates.
+
+0.6.2 (21 June 2000)
+* ginaccint.bin is now launched by a binary program instead of by a scripts.
+  This allows us to write #!-scripts.  A small test suite for GiNaC-cint was
+  added.
+* Several minor bugfixes.
+
+0.6.1 (18 May 2000)
+* Cleanup in the interface to Cint.  The required version is now Cint 5.14.38.
+* Several bugfixes in target install.
+
 0.6.0 (11 May 2000)
 * IMPORTANT: Several interface changes make programs written with GiNaC 
   much clearer but break compatibility with older versions: