X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=NEWS;h=9c503db49875bde2b4fa9f0c6f45bbe7c7f1c77c;hp=fb41acc912170c025fbdc58a3e8d9ecb7a8306d2;hb=e3830d7f64627be5f6f4f265c0e8effb653be6b9;hpb=e5b02b3895dd82a9b0007d3535b4d5461f64c2ec diff --git a/NEWS b/NEWS index fb41acc9..9c503db4 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,31 @@ This file records noteworthy changes. +0.6.0 (...) +* IMPORTANT: Several interface changes make programs written with GiNaC + much clearer but break compatibility with older versions: + - f(x).series(x,p[,o]) -> f(x).series(x==p,o) + - series(f(x),x,p[,o]) -> series(f(x),x==p,o) + - gamma() -> tgamma() (The true Gamma function, there is now also + log(tgamma()), called lgamma(), in accord with ISO/IEC 9899:1999.) + - EulerGamma -> Euler +* #include'ing ginac.h defines the preprocessor symbols GINACLIB_MAJOR_VERSION, + GINACLIB_MINOR_VERSION, and GINACLIB_MICRO_VERSION with the respective GiNaC + library version numbers. +* Several new timings in the check target. Some of them may be rather rude + at your machine. + +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 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, allowing for remembering, too.