Method: Integer#log2

Defined in:
lib/ruby-vpi/integer.rb

#log2 ⇒ Object

Returns the ceiling of the logarithm (base 2) of this positive integer.



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# File 'lib/ruby-vpi/integer.rb', line 11

def log2
  raise "integer must be positive" if self < 0
  bin = to_s(2)

  if bin =~ /^10+$/
    bin.length - 1
  else
    bin.length
  end
end