/usr/share/doc/ruby-gsl/examples/integration/qawc.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 | #!/usr/bin/env ruby
require 'gsl'
include GSL
include Math
f459 = Function.alloc { |x|
1.0/(5.0*x*x*x + 6.0)
}
exp_result = -8.994400695837000137E-02
exp_abserr = 1.185290176227023727E-06
result = f459.qawc([-1.0, 5.0], 0, [0.0, 1e-3])
p result
puts("exp_result: #{exp_result}")
puts("exp_abserr: #{exp_abserr}")
p Integration.qawc(f459, [-1.0, 5.0], 0)
|