Mercurial > hg > octave-shane
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(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -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 +++ b/NEWS @@ -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: ---------------------------------------------------------