1 This file records noteworthy changes.
4 * IMPORTANT: Several interface changes make programs written with GiNaC
5 much clearer but break compatibility with older versions:
6 - f(x).series(x,p[,o]) -> f(x).series(x==p,o)
7 - series(f(x),x,p[,o]) -> series(f(x),x==p,o)
8 - gamma() -> tgamma() (The true Gamma function, there is now also
9 log(tgamma()), called lgamma(), in accord with ISO/IEC 9899:1999.)
11 * #include'ing ginac.h defines the preprocessor symbols GINACLIB_MAJOR_VERSION,
12 GINACLIB_MINOR_VERSION, and GINACLIB_MICRO_VERSION with the respective GiNaC
13 library version numbers.
14 * Several new timings in the check target. Some of them may be rather rude
18 * Some algorithms in class matrix (notably determinant) were replaced by
19 less brain-dead ones and should now have much better performance.
20 * Checks were completely reorganized and split up into three parts:
21 a) exams (small regression tests with predefined input)
22 b) checks (lenghty coherence checks with random input)
23 c) timings (for coherence and crude benchmarking)
24 * Behaviour of .evalf() was changed: it doesn't .evalf() any exponents.
25 * Expanded expressions now remember they are expanded to prevent
26 superfluous expansions.
27 * Small bugfixes and improvements in the series expansion.
29 0.5.3 (23 February 2000)
30 * A more flexible scheme for registering functions was implemented,
31 allowing for remembering, too.
34 0.5.2 (16 February 2000)
35 * Mainly fixes a bug in the packaging of release 0.5.1.
37 0.5.1 (14 February 2000)
38 * Fixes a small number of bugs.
40 0.5.0 (7 February 2000)
41 * Expressions can be written ("archived") to files and read therefrom.
42 * Addition of GiNaC-cint, which lets you write complete programs in
43 an interactive shell-like manner in your favoured programming
46 0.4.1 (13 December 1999)
47 * Series Expansion of Gamma function and some other trigonometric
48 functions at their poles works now.
49 * Many more evaluations of special functions at points where
51 * info_flags::rational doesn't return true for complex extensions
52 any more---use info_flags::crational for the old behaviour.
53 info_flags::integer and -::cinteger work similarly, the same
54 holds for types like info_flags::rational_polynomial.
56 0.4.0 (26 November 1999)
57 * First public release.