kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

* lib/matrix/lup_decomposition: Fix bugs with LUP Decomposition of

Browse source 
rectangular matrices. [rubyspec:ba849801a85]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38807 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2013-01-13 22:13:12 +00:00
parent d5b62c3aa1
commit 1f4c792072
2 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
ChangeLog
View file

@ -1,3 +1,8 @@
Mon Jan 14 07:12:52 2013 Marc-Andre Lafortune <ruby-core@marc-andre.ca>
* lib/matrix/lup_decomposition: Fix bugs with LUP Decomposition of
rectangular matrices. [rubyspec:ba849801a85]
Mon Jan 14 06:46:53 2013 NARUSE, Yui <naruse@ruby-lang.org>
* regparse.c (add_ctype_to_cc): don't check dup warn on adding

8
lib/matrix/lup_decomposition.rb
View file

@ -19,7 +19,7 @@ class Matrix
include Matrix::ConversionHelper
def l
Matrix.build(@row_count, @column_count) do |i, j|
Matrix.build(@row_count, [@column_count, @row_count].min) do |i, j|
if (i > j)
@lu[i][j]
elsif (i == j)
@ -33,7 +33,7 @@ class Matrix
# Returns the upper triangular factor +U+
def u
Matrix.build(@column_count, @column_count) do |i, j|
Matrix.build([@column_count, @row_count].min, @column_count) do |i, j|
if (i <= j)
@lu[i][j]
else
@ -45,9 +45,9 @@ class Matrix
# Returns the permutation matrix +P+
def p
rows = Array.new(@row_count){Array.new(@column_count, 0)}
rows = Array.new(@row_count){Array.new(@row_count, 0)}
@pivots.each_with_index{|p, i| rows[i][p] = 1}
Matrix.send :new, rows, @column_count
Matrix.send :new, rows, @row_count
end
# Returns +L+, +U+, +P+ in an array