2017-01-18 05:15, Shreyansh Jain:

quoted

quoted

+ *
+ * @return
+ *     0 for successful scan
+ *     !0 (<0) for unsuccessful scan with error value

What do you mean with !0 (<0) ?
I guess <0 is enough.

 
Only to highlight that only '-ve' values would be returned. I will change it to !0 only.

What is -ve?
Why not specifying <0 if errors are always negative?