title: NSMutableArray. What is the fastest way to convert it to a plain ole C-array
body: <p>I like the convenience of NSMutableArray but sometimes you just need to drop down to good ole C-arrays. Like when you are feeding interleaved vertex arrays to OpenGL.</p>
  
  <p>What is the fastest way of copying the contents of an NSMutableArray to a C-array? </p>
  
  <p>Yah, I realize this bit shuffling introduces inefficiency but I'd like to see if I can sneak by with this approach without taking a hit in frame rate.</p>
  
  <p>Cheers,
  Doug</p>