Microsoft.Scripting.Math.BigInteger.Unnormalize C# (CSharp) Method

    private static void Unnormalize(uint[] un, out uint[] r, int shift) {
      Debug.Assert(0 <= shift && shift < 32);

      int length = GetLength(un);
      r = new uint[length];

      if (shift > 0) {
        int lshift = 32 - shift;
        uint carry = 0;
        for (int i = length - 1; i >= 0; i--) {
          uint uni = un[i];
          r[i] = (uni >> shift) | carry;
          carry = (uni << lshift);
        }
      } else {
        for (int i = 0; i < length; i++) {
          r[i] = un[i];
        }
      }

      TestNormalize(r, un, shift);
    }