  In this article, we illustrate an algorithm for the computation of the weight
distribution of CRC codes. The recursive structure of CRC codes will give us an
iterative way to compute the weight distribution of their dual codes starting
from just some ``representative'' words. Thanks to MacWilliams Theorem, the
computation of the weight distribution of dual codes can be easily brought back
to that of CRC codes. This algorithm is a good alternative to the standard
algorithm that involves listing every word of the code.
