Module: Dydx::Algebra

Includes:
Set
Included in:
Dydx
Defined in:
lib/dydx/algebra.rb,
lib/dydx/algebra/set.rb,
lib/dydx/algebra/formula.rb,
lib/dydx/algebra/inverse.rb,
lib/dydx/algebra/operator/num.rb,
lib/dydx/algebra/operator/formula.rb,
lib/dydx/algebra/operator/general.rb,
lib/dydx/algebra/operator/inverse.rb,
lib/dydx/algebra/operator/parts/num.rb,
lib/dydx/algebra/operator/parts/base.rb,
lib/dydx/algebra/operator/parts/symbol.rb,
lib/dydx/algebra/operator/parts/formula.rb,
lib/dydx/algebra/operator/parts/general.rb,
lib/dydx/algebra/operator/parts/inverse.rb

Defined Under Namespace

Modules: Operator, Set Classes: Formula, Inverse

Instance Method Summary collapse

Methods included from Set

#cos, #e, #e0, #e1, #log, #log10, #log2, #oo, #pi, #sin, #tan

Instance Method Details

#-@ ⇒ Object 



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# File 'lib/dydx/algebra.rb', line 26

def -@
  inverse(self, :+)
end

#inverse(x, operator) ⇒ Object

TODO: Cyclomatic complexity for inverse is too high. [7/6]



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# File 'lib/dydx/algebra.rb', line 11

def inverse(x, operator)
  if x.num?
    x = x.to_numeric
    if operator == :+
      _(- x)
    else
      _(Rational(1, x))
    end
  elsif x.is_a?(Inverse) && x.operator == operator
    x.x
  else
    Inverse.new(x, operator)
  end
end