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* 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.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@24972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2009-09-16 21:25:53 +00:00
parent 433cd0e082
commit 5a52a755c5
2 changed files with 8 additions and 2 deletions
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4
lib/matrix.rb
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@ -701,14 +701,14 @@ 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?