diff options
| author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-07-01 06:10:40 +0000 |
|---|---|---|
| committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-07-01 06:10:40 +0000 |
| commit | 376b8251271da10ff3571b9a15c25333bb4492bc (patch) | |
| tree | 95b2aba8da9527ba989706632a2814bd5d9d7c6e | |
| parent | f4dda52025433e232f931ffa1cb0473684128a5a (diff) | |
* lib/matrix: Add Matrix#round
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | NEWS | 1 | ||||
| -rw-r--r-- | lib/matrix.rb | 7 |
3 files changed, 12 insertions, 0 deletions
@@ -1,3 +1,7 @@ +Fri Jul 1 15:10:22 2011 Marc-Andre Lafortune <ruby-core@marc-andre.ca> + + * lib/matrix: Add Matrix#round + Fri Jul 1 11:41:12 2011 NARUSE, Yui <naruse@ruby-lang.org> * string.c (tr_trans): free heap ptr when the str is not embeded. @@ -164,6 +164,7 @@ with all sufficient information, see the ChangeLog file. * Matrix#normal? * Matrix#orthogonal? * Matrix#permutation? + * Matrix#round * Matrix#symmetric? * Matrix#unitary? * Matrix#upper_triangular? diff --git a/lib/matrix.rb b/lib/matrix.rb index 3242cde9b2..12f99925bc 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -89,6 +89,7 @@ end # * <tt> #determinant </tt> # * <tt> #det </tt> # * <tt> #rank </tt> +# * <tt> #round </tt> # * <tt> #trace </tt> # * <tt> #tr </tt> # * <tt> #transpose </tt> @@ -1125,6 +1126,12 @@ class Matrix rank end + # Returns a matrix with entries rounded to the given precision + # (see Float#round) + # + def round(ndigits=0) + map{|e| e.round(ndigits)} + end # # Returns the trace (sum of diagonal elements) of the matrix. |