File: u_spec.rb

package info (click to toggle)
jruby 9.1.17.0-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 71,608 kB
  • sloc: ruby: 505,916; java: 237,875; xml: 31,161; ansic: 7,152; yacc: 4,605; sh: 887; makefile: 108; jsp: 48; tcl: 40
file content (18 lines) | stat: -rw-r--r-- 436 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
require File.expand_path('../../../../spec_helper', __FILE__)
require 'matrix'

describe "Matrix::LUPDecomposition#u" do
  before :each do
    @a = Matrix[[7, 8, 9], [14, 46, 51], [28, 82, 163]]
    @lu = Matrix::LUPDecomposition.new(@a)
    @u = @lu.u
  end

  it "returns the second element of to_a" do
    @u.should == @lu.to_a[1]
  end

  it "returns an upper triangular matrix" do
    @u.upper_triangular?.should be_true
  end
end