Dear,
You are not saying what is 1.6 and 0.16 I meant to say positive and negative singes .
TW and Vemuri,
If in case ,1.6 is positive value and 0.16 is negative value then whoever solution is not working.Before suggesting solution ,we need to know some details on this requirement .
Note : All are seeking Magic Solution not a Logic Solution 
.
If you have any doubts please let me know .
Thanks,
Naren