I have gone through this article, on decoding child block
if the 1st bit is ‘0’
I have added high 15 bits and the low 18 bits as mentioned in article. But , it is not there what to do when 1st bit is ‘1’.
On refering microsoft doucument I tried adding high 10bits and low 23 bit when 1st bit is ‘1’.But the results are incorrecct