function hashArray(length, seed, array) {
  var hash = murmurhash3((seed * 0xFBA4C795) & 0xFFFFFFFF, array);

  return hash % (length * 8);
}
Function used to hash the given byte array.

@param  {number}      length - Length of the filter's byte array.
@param  {number}      seed   - Seed to use for the hash function.
@param  {Uint16Array}        - Byte array representing the string.
@return {number}             - The hash.

@note length * 8 should probably already be computed as well as seeds.