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2 definitions found
 for bit twiddling
From The Jargon File (version 4.4.7, 29 Dec 2003) :

  bit twiddling
   n.
  
      [very common]
  
      1. (pejorative) An exercise in tuning (see tune) in which incredible
      amounts of time and effort go to produce little noticeable improvement,
      often with the result that the code becomes incomprehensible.
  
      2. Aimless small modification to a program, esp. for some pointless goal.
  
      3. Approx. syn. for bit bashing; esp. used for the act of frobbing the
      device control register of a peripheral in an attempt to get it back to a
      known state.
  

From The Free On-line Dictionary of Computing (18 March 2015) :

  bit twiddling
  
     1. (pejorative) An exercise in tuning (see tune) in which
     incredible amounts of time and effort go to produce little
     noticeable improvement, often with the result that the code
     becomes incomprehensible.
  
     2. Aimless small modification to a program, especially for
     some pointless goal.
  
     3. bit bashing, especially used for the act of frobbing the
     device control register of a peripheral in an attempt to get
     it back to a known state.
  
     [{Jargon File]
  

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