- Adjusted build-environment for "Cint without crutches" (tm).

[ginac.git] / NEWS

diff --git a/NEWS b/NEWS
index 0824232ae0651befc14547b75e65a33715549406..04f3e55989afc248f80462fe6bed88c346ec8532 100644 (file)
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+++ b/NEWS
@@ -1,10 +1,25 @@
 This file records noteworthy changes.
 
-0.6.0 (...)
-* Important interface changes:
-  gamma() -> Gamma()
-  EulerGamma -> gamma
-  beta() -> Beta()
+0.6.0 (11 May 2000)
+* 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 (the
+  good old ex::subs() method reverses this process)
+* Calling diff() on a function that has no derivative defined returns the
+  inert derivative function "Derivative".
+* Several new timings in the check target.  Some of them may be rather rude 
+  at your machine, feel free to interrupt them.
 
 0.5.4 (15 March 2000)
 * Some algorithms in class matrix (notably determinant) were replaced by