(a+b)/2...

[nick]

I try to do (a+b)/2 mathematic formula.. i try to modify dis addition code.. how??


include \masm32\include\masm32rt.inc

       .data?

var1    dd ?
var2    dd ?


       .code

start:
       mov     var1,sval(input("First Number: "))
       mov     var2,sval(input("Second Number: "))
     

       mov     eax,var1
        add eax,var2

       
        print ustr$(eax),13,10

       inkey
       exit

       end     start

[clive]

Code Select Expand

        mov     eax,var1
        add eax,var2
        shr  eax,1

[dedndave]

well - the next problem in the book will be to show the remainder or divide by 3 or something - lol

Code Select Expand

        mov     eax,var1
        add     eax,var2
        mov     ecx,2
        mov     edx,0
        div     ecx

;EAX = quotient, EDX = remainder

[xiahan]

well - the next problem in the book will be to show the remainder or divide by 3 or something - lol

Code Select Expand

        mov     eax,var1
        add     eax,var2
        mov     ecx,2
        mov     edx,0
        div     ecx

;EAX = quotient, EDX = remainder

should the edx always be initial to 0 , i test

Code Select Expand


movzx eax,[ebx].xorigin
mul lPixel ;word
mov edx,eax
push edx
movzx eax,[ebx].yorigin
mul spw ;dword
pop edx
add edx,eax


if i didn't push/pop edx ,it will be flushed to 0

so if no initialization was made on edx in div,

i think the edx will also be flushed to 0 if the reminder is happen to 0

[dedndave]

EDX does not need to be initialized for MUL
it does need to be initialized when using DIV with a 32-bit operand

[xiahan]

EDX does not need to be initialized for MUL
it does need to be initialized when using DIV with a 32-bit operand

got it