/usr/share/doc/ruby-gsl/examples/linalg/SV_narray.rb is in ruby-gsl 2.1.0.3+dfsg1-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | #!/usr/bin/env ruby
require("gsl")
include GSL
m = NMatrix[[0.18, 0.60, 0.57, 0.96], [0.41, 0.24, 0.99, 0.58],
[0.14, 0.30, 0.97, 0.66], [0.51, 0.13, 0.19, 0.85]]
u, v, s = Linalg::SV.decomp(m)
puts "u ->"
p u
puts "v ->"
p v
puts "s ->"
p s
b = NArray[1.0, 2, 3, 4]
puts "solved ->"
p Linalg::SV.solve(u, v, s, b)
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