method

log2

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What's this?

log2(z) public

Returns the base 2 logarithm of z

CMath.log2(-1) => (0.0+4.532360141827194i)

Show source

# File lib/cmath.rb, line 98
  def log2(z)
    begin
      if z.real? and z >= 0
        RealMath.log2(z)
      else
        log(z) / RealMath.log(2)
      end
    rescue NoMethodError
      handle_no_method_error
    end
  end

log2

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