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Revert "Matrix: Add #reflexive? method. [Fix GH-1730]"

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This reverts commit 19fe6552c4.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65500 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2018-11-02 17:51:56 +00:00
parent df58e74e02
commit 55961ac9d7
3 changed files with 0 additions and 42 deletions
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2
NEWS
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@ -313,8 +313,6 @@ sufficient information, see the ChangeLog file or Redmine
* Matrix#antisymmetric?
* Matrix#reflexive?
[Net]
[New options]

9
lib/matrix.rb
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@ -813,15 +813,6 @@ class Matrix
true
end
#
# Returns +true+ if this is a reflexive matrix.
# Raises an error if matrix is not square.
#
def reflexive?
Matrix.Raise ErrDimensionMismatch unless square?
each(:diagonal).all? { |e| e == 1 }
end
#
# Returns +true+ if this is a unitary matrix
# Raises an error if matrix is not square.

31
spec/ruby/library/matrix/reflexive_spec.rb
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@ -1,31 +0,0 @@
require File.expand_path('../../../spec_helper', __FILE__)
require 'matrix'
ruby_version_is '2.6' do
describe "Matrix.reflexive?" do
it "returns true for a reflexive Matrix" do
Matrix[[1, 2, 3], [4, 1, 3], [5, 3, 1]].reflexive?.should be_true
end
it "returns true for a 0x0 empty matrix" do
Matrix.empty.reflexive?.should be_true
end
it "returns false for a non-reflexive Matrix" do
Matrix[[1, 1],[2, 2]].reflexive?.should be_false
end
it "raises an error for non-square matrices" do
[
Matrix[[0], [0]],
Matrix[[0, 0]],
Matrix.empty(0, 2),
Matrix.empty(2, 0),
].each do |rectangular_matrix|
lambda {
rectangular_matrix.reflexive?
}.should raise_error(Matrix::ErrDimensionMismatch)
end
end
end
end