Mercurial > octave-nkf
changeset 9722:97d683d8b9ff
update NEWS
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Tue, 13 Oct 2009 12:37:51 +0200 |
| parents | 192d94cff6c1 |
| children | f426899f4b9c |
| files | ChangeLog NEWS |
| diffstat | 2 files changed, 9 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog Tue Oct 13 12:22:50 2009 +0200 +++ b/ChangeLog Tue Oct 13 12:37:51 2009 +0200 @@ -1,3 +1,7 @@ +2009-10-13 Jaroslav Hajek <highegg@gmail.com> + + * NEWS: Update. + 2009-10-08 Jaroslav Hajek <highegg@gmail.com> * configure.ac: Define HAVE_QRUPDATE_LUU if qrupdate supports LU updates.
--- a/NEWS Tue Oct 13 12:22:50 2009 +0200 +++ b/NEWS Tue Oct 13 12:37:51 2009 +0200 @@ -116,6 +116,11 @@ return the triangular matrix factors with proper internal matrix_type set, so that it won't need to be computed when the matrix is used for division. + ** The built-in "sum" function now handles the non-native summation (i.e. double precision + sum of single or integer inputs) more efficiently, avoiding a temporary conversion of + the whole input array to doubles. Further, "sum" can now accept an "extra" option argument, + using a compensated summation algorithm rather than a straightforward sum, which significantly + improves precision if lots of cancellation occurs in the summation. Summary of important user-visible changes for version 3.2: ---------------------------------------------------------