diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | lib/matrix.rb | 4 |
2 files changed, 8 insertions, 2 deletions
@@ -1,3 +1,9 @@ +Thu Sep 17 06:03:40 2009 Marc-Andre Lafortune <ruby-core@marc-andre.ca> + + * lib/matrix.rb (Matrix#rank): Two bug fixes. One made + Matrix[[0,0],[0,0],[1,0]].rank raise a NoMethodError while the other + one had Matrix[[0,1],[0,0],[1,0]].rank raise a TypeError. + Thu Sep 17 06:02:04 2009 Marc-Andre Lafortune <ruby-core@marc-andre.ca> * lib/matrix.rb: Optimizations diff --git a/lib/matrix.rb b/lib/matrix.rb index 1ed4e16c4d..c646fe1744 100644 --- a/lib/matrix.rb +++ b/lib/matrix.rb @@ -751,14 +751,14 @@ class Matrix rank = 0 a_column_size.times do |k| if (akk = a[k][k]) == 0 - i = (k+1 ... a_column_size).find {|i| + i = (k+1 ... a_row_size).find {|i| a[i][k] != 0 } if i a[i], a[k] = a[k], a[i] akk = a[k][k] else - i = (k+1 ... a_row_size).find {|i| + i = (k+1 ... a_column_size).find {|i| a[k][i] != 0 } next if i.nil? |