From: stevenj <stevenj@alum.mit.edu>
Date: Fri, 13 Nov 2009 00:47:51 +0000 (-0500)
Subject: more nlopt 1.1 news
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=b7aef240727fb7b0571f3569edc8cf8e9d900390;p=nlopt.git

more nlopt 1.1 news

darcs-hash:20091113004751-c8de0-f8e10549f015a4d82529161a65f8db7c24a82590.gz
---

diff --git a/NEWS b/NEWS
index 14eb9b2..d0c9ce4 100644
--- 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.