X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=NEWS;h=ce9c69864d07515e1d1ef3e2bfc685b5ab906148;hp=487dd70267f2506c016431626a5194d3af91373b;hb=438e3ba56f3e9172f234df57e7c59f95353e4eaf;hpb=d8dc64f8545aec8ae22ebad3131aab814cbf4eef;ds=sidebyside diff --git a/NEWS b/NEWS index 487dd702..ce9c6986 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,23 @@ 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. +* Expressions can be constructed from strings like this: + ex e("2*x+y", lst(x, y)); +* ex::to_rational() provides a way to extend the domain of functions like + gcd() and divide() that only work on polynomials or rational functions +* 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. @@ -10,6 +28,7 @@ This file records noteworthy changes. * 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,