more nlopt 1.1 news

darcs-hash:20091113004751-c8de0-f8e10549f015a4d82529161a65f8db7c24a82590.gz

diff --git a/NEWS b/NEWS
index 14eb9b2565ef095edb3d09d85da90bc301289d39..d0c9ce483f1fc7b1d9d6ff261c75704a00c022cf 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-NLopt 1.1 (28 October 2009)
+NLopt 1.1 (12 November 2009)
 
 * configure script detects whether --enable-shared is required
   in order to compile Matlab and Octave plugins (as is the case
@@ -11,6 +11,10 @@ NLopt 1.1 (28 October 2009)
 * Modified COBYLA algorithm to have better support for bound
   constraints.
 
+* Added new NLOPT_ROUNDOFF_LIMITED failure code to indicate
+  cases in which optimization breaks down due to roundoff errors,
+  in which case it is possible that useful results were obtained.
+
 * Experimental support for nonlinear equality constraints via
   augmented-Lagrangian method.
 
@@ -18,6 +22,11 @@ NLopt 1.1 (28 October 2009)
   DLL, although you have to manually add #define NLOPT_DLL
   to nlopt.h *after* installing (after compiling NLopt).
 
+* Added several checks for roundoff-related breakdown to NEWUOA code.
+
+* When only a relative error tolerance is specified, no longer
+  fails to halt when exact convergence to zero is obtained.
+
 * Workaround for incompatible qsort_r functions in BSD and GNU libc
   by always using my own version; thanks to Wendy Vandoolaeghe
   and Philippe Preux for the bug report and explanation.