Class: QrCodeMaker::QRMath

Inherits:
Object
  • Object
show all
Defined in:
lib/qr_code_maker/encoder.rb

Class Method Summary collapse

Class Method Details

.gexp(n) ⇒ Object 



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# File 'lib/qr_code_maker/encoder.rb', line 97

def gexp(n)
  while n < 0
    n += 255
  end

  while n >= 256
    n -= 255
  end

  EXP_TABLE[n]
end

.glog(n) ⇒ Object

Raises:



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# File 'lib/qr_code_maker/encoder.rb', line 92

def glog(n)
  raise QRCodeRunTimeError, "glog(#{n})" if n < 1
  LOG_TABLE[n]
end