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Is there anyway to set the width of the twos compliment used in binary display =2?

2
10b
-2
1111111111111111111111111111111111111111111111111111111111111110b

I would like to see a 3bit signed twos compliment representation.

2
010b
-2
110b
1

It is not possible directly with rax2, check this line, because char strbits[65]; fixed for 64bit (65th byte is for b char). You can mix rax command to shell commands to giving your result:

$rax2 Bx-2 | tail -c 5
110b

Or directly in radare2

[0x100050e26]> ? Bx-2~bin | tail -c 4
110
  • 1
    you can do: ?b -2 | tail -c 5 in order to evaluate the "-2" to binary without grepping. – Megabeets Oct 26 '18 at 8:07

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