assemblyx86binarynasm

How to detect if a binary number has a 0 in Decimal

I have a binary number and I need to know if that binary number has a 0 anywhere in the number when I represent it as Decimal.

So, I can't convert it to a String or something like that.

I need some way to treat it just like a binary and detect it from there.

for instance

10111100101 = 1509
101111001011 = 3019

I need to detect those 0

ThankS!

Solution

  • The only method I know is to partially convert the number to decimal, without remembering the results. Something like this:

    ; number is in eax
    mov  ecx, 10
loop:
    cdq
    div  ecx
    test edx, edx
    jnz  loop
    test eax, eax
    jnz  zero_found

; zero not found

    ret

zero_found:

    ret