Class: LFSR::Pure::Size31

Inherits:
Base
  • Object
show all
Defined in:
lib/lfsr/pure.rb

Constant Summary collapse

MASK = 
0x7fffffff

Instance Attribute Summary

Attributes inherited from Base

#max, #reg, #seed

Instance Method Summary collapse

Methods inherited from Base

#initialize, #reset

Constructor Details

This class inherits a constructor from LFSR::Base

Instance Method Details

#next_i ⇒ Object 



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# File 'lib/lfsr/pure.rb', line 328

def next_i
  @reg = (@reg >> 1) | ((@reg[0]^@reg[1]^@reg[2]^@reg[3]) << 0x1e)
  @reg = (@reg >> 1) | ((@reg[0]^@reg[1]^@reg[2]^@reg[3]) << 0x1e) while @reg > @max
  @reg - 1
end