Class: QRCode::Encoder::Math

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

Class Method Summary collapse

Class Method Details

.gexp(n) ⇒ Object 



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# File 'lib/qrcode/encoder/math.rb', line 36

def gexp(n)
	while n < 0
		n += 255
	end
	
	while n >= 256
		n -= 255
	end
	
	EXP_TABLE[n]
end

.glog(n) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/qrcode/encoder/math.rb', line 31

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