The check `if (delta < 0)` in line 353 and 407 would always be false if delta were unsigned. Signed-off-by: Mingjie Shen <shen497@purdue.edu>
The check `if (delta < 0)` in line 353 and 407 would always be false if delta were unsigned. Signed-off-by: Mingjie Shen <shen497@purdue.edu>