- Mention `warranty;' in splash-screen instead of file COPYING.

[ginac.git] / NEWS

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 This file records noteworthy changes.
 
-0.5.4 (?? 2000)
-* Algorithms in class matrix (determinant and solve) were replaced by
+0.5.4 (15 March 2000)
+* Some algorithms in class matrix (notably determinant) were replaced by
   less brain-dead ones and should now have much better performance.
-* Checks were reorganized and split up into three parts:
-  a) exams (small tests with predefined input)
-  b) checks (lenghty consistency checks)
-  c) timings (for crude benchmarking)
+* Checks were completely reorganized and split up into three parts:
+  a) exams (small regression tests with predefined input)
+  b) checks (lenghty coherence checks with random input)
+  c) timings (for coherence and crude benchmarking)
+* Behaviour of .evalf() was changed: it doesn't .evalf() any exponents.
+* Expanded expressions now remember they are expanded to prevent
+  superfluous expansions.
+* Small bugfixes and improvements in the series expansion.
 
 0.5.3 (23 February 2000)
 * A more flexible scheme for registering functions was implemented,