/usr/share/doc/ruby-gsl/examples/vector/floor.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 23 | #!/usr/bin/env ruby
# Turn on warnings
$-w = true
require 'irb/xmp'
require 'gsl'
# Apparently, IRB::Frame has a bug that prevents the defaults from working, so
# an XMP instance must be created explicitly this way instead of using the
# otherwise convenient xmp method.
XMP.new(IRB::Frame.top(-1)).puts <<END
#Create test Vector
v = GSL::Vector[1.1, 2.7, 3.5, 5.8, -1.2, -2.8, -3.5]
# Show result of #floor
v.floor
# Show result of #ceil
v.ceil
# Show result of #round
v.round
END
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