P
Paul
Im trying to take a negative integer value, convert it to its binary
equivalent, and save its hex value
-7 -> 1111 1001 -> F9
I was hoping to use sprintf, but:
irb(main):017:0> b = sprintf("%4b" , a)
=> "..1001"
irb(main):018:0>
The .. that appear break any further processing. So my questions are:
Why the dots, and what are they?
How do I do what Im trying to do - given my -7 in the example may be a
1 byte, 2 byte or 4 byte value. ( Im sure its some magic with
pack....)
Thanks
Paul
equivalent, and save its hex value
-7 -> 1111 1001 -> F9
I was hoping to use sprintf, but:
irb(main):017:0> b = sprintf("%4b" , a)
=> "..1001"
irb(main):018:0>
The .. that appear break any further processing. So my questions are:
Why the dots, and what are they?
How do I do what Im trying to do - given my -7 in the example may be a
1 byte, 2 byte or 4 byte value. ( Im sure its some magic with
pack....)
Thanks
Paul