From: Marc-Andre Lafortune <redmine@...>
Date: 2009-09-17T13:48:51+09:00
Subject: [ruby-core:25623] [Bug #2108] Matrix#rank: bug for most rectangular matrices

Bug #2108: Matrix#rank: bug for most rectangular matrices
http://redmine.ruby-lang.org/issues/show/2108

Author: Marc-Andre Lafortune
Status: Closed, Priority: Normal
Category: lib
ruby -v: -

In both Ruby 1.8.x and 1.9.x, two errors will have #rank raise different errors for most rectangular matrices. 

Matrix[[0,0],[0,0],[1,0]].rank  # ==> NoMethodError: undefined method `quo' for nil:NilClass

Matrix[[1,0],[0,0],[1,0]].rank  # ==> TypeError: nil can't be coerced into Rational

Fixed in revisions 24969, 24972

http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=24969


----------------------------------------
http://redmine.ruby-lang.org