/usr/lib/ruby/vendor_ruby/gsl/oper.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 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | module GSL::Oper
def self.included(base)
base.class_eval {
alias_method :_gsl_oper_original_mul, :*
alias_method :_gsl_oper_original_div, :/
def *(other)
case other
when Numeric
_gsl_oper_original_mul(other)
when GSL::Matrix, GSL::Vector,
GSL::Matrix::Int, GSL::Vector::Int,
GSL::Vector::Complex, GSL::Matrix::Complex,
*GSL.have_tensor? ? [GSL::Tensor, GSL::Tensor::Int] : []
other.scale(self)
else
_gsl_oper_original_mul(other)
end
end
def /(other)
case other
when Numeric
_gsl_oper_original_div(other)
when GSL::Poly, GSL::Poly::Int
a = GSL::Poly[1]; a[0] = self
GSL::Rational.new(a, other)
when GSL::Vector::Col
other.scale(self / GSL.pow_2(other.dnrm2))
when GSL::Vector::Int::Col
v = other.to_f
v.scale(self / GSL.pow_2(v.dnrm2))
else
_gsl_oper_original_div(other)
end
end
}
end
end
[RUBY_VERSION > "2.4" ? Integer : Fixnum, Float].each { |klass| klass.send(:include, GSL::Oper) }
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