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* lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid

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infinite loop.  [Bug #1020]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24211 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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wanabe 2009-07-20 03:53:19 +00:00
parent aea1193a96
commit abc20ed0f4
2 changed files with 7 additions and 3 deletions
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ChangeLog
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@ -1,3 +1,8 @@
Mon Jul 20 12:51:39 2009 wanabe <s.wanabe@gmail.com>
* lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid
infinite loop. [Bug #1020]
Mon Jul 20 11:12:54 2009 Nobuyoshi Nakada <nobu@ruby-lang.org> Mon Jul 20 11:12:54 2009 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in, Makefile.in (TEST_RUNNABLE): tests are no * configure.in, Makefile.in (TEST_RUNNABLE): tests are no

5
lib/matrix.rb
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@ -770,7 +770,7 @@ class Matrix
end end
rank = 0 rank = 0
k = 0 k = 0
loop do begin
if (akk = a[k][k]) == 0 if (akk = a[k][k]) == 0
i = k i = k
exists = true exists = true
@ -812,8 +812,7 @@ class Matrix
end end
end end
rank += 1 rank += 1
break unless (k += 1) <= a_column_size - 1 end while (k += 1) <= a_column_size - 1
end
return rank return rank
end end