[Code-Crunchers] Unsigned Integer Printing (16bit)

[Arkon]

Hey people,

 

I was playing with DOS.don't ask my why. :-)

Anyways, I thought it might interest some of you to see this recursion for
converting AX into decimal number and print it.

It's 16 bits, but it can easily be ported into 32bits (and then to dump it
into a buffer).

 

And as a matter of fact, it even handles AX=0 as an input easily.

 

mov ax, 1234

call print_int

ret

 

print_int:

mov bx, 10

xor dx, dx

div bx

push dx

test ax, ax

jz .con

call print_int

.con:

pop ax

add al, '0'

int 0x29

ret

 

 

Oh BTW - making it printing signed integers is a matter of flags test of AX
and JNS-NEG combination... though you have to print minus char.

 

Gil

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