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Index > Main > Procedure to add commas into number strings

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me239



Joined: 06 Jan 2011
Posts: 200
me239
Hey everyone! I was wondering if anyone had any example procedures for adding commas into number strings eg. 12345 = 12,345
Thanks!
Post 01 Aug 2011, 01:05
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edfed



Joined: 20 Feb 2006
Posts: 4237
Location: 2018
edfed
use something like this:

Code:
mov eax,12345
call fixeddecimal
mov esi,string
call print
...
string db 'xx,xxx'
strend db 0
...
fixeddecimal:
        push eax ebx ecx edx
        mov ecx,10
        mov ebx,[strend]
.loop:
        dec ebx
        cmp byte[ebx],'.'
        jne @f
        dec ebx
@@:
        cmp ebx,[string]
        jl .end
        xor edx,edx
        div ecx
        or edx,edx
        jne @f
        or eax,eax
        jne @f
        mov dl,' '-'0'
@@:
        add dl,'0'
        mov [ebx],dl
        jmp .loop
.end:
        pop edx ecx ebx eax
        ret
                               
    
Post 01 Aug 2011, 01:50
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me239



Joined: 06 Jan 2011
Posts: 200
me239
edfed wrote:
use something like this:

Code:
mov eax,12345
call fixeddecimal
mov esi,string
call print
...
string db 'xx,xxx'
strend db 0
...
fixeddecimal:
        push eax ebx ecx edx
        mov ecx,10
        mov ebx,[strend]
.loop:
        dec ebx
        cmp byte[ebx],'.'
        jne @f
        dec ebx
@@:
        cmp ebx,[string]
        jl .end
        xor edx,edx
        div ecx
        or edx,edx
        jne @f
        or eax,eax
        jne @f
        mov dl,' '-'0'
@@:
        add dl,'0'
        mov [ebx],dl
        jmp .loop
.end:
        pop edx ecx ebx eax
        ret
                               
    

Thanks, but is there anyway to convert a number of any size without using a string with preexisting commas? BTW I'm still in 16 bit realmode.
Post 01 Aug 2011, 02:04
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bitshifter



Joined: 04 Dec 2007
Posts: 764
Location: Massachusetts, USA
bitshifter
You want to put comma in every 3 positions?

Thousands...
Hundred Thousands...

12,345,678
Post 01 Aug 2011, 02:16
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me239



Joined: 06 Jan 2011
Posts: 200
me239
bitshifter wrote:
You want to put comma in every 3 positions?

Thousands...
Hundred Thousands...

12,345,678
Ya, pretty much. Well as much as a dword can hold.
Post 01 Aug 2011, 02:23
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edfed



Joined: 20 Feb 2006
Posts: 4237
Location: 2018
edfed
to use commas, you should add a test for comma like this:

Code:
.loop:
        dec ebx
        cmp byte[ebx],'.'
        jne @f
        dec ebx
@@: 
        cmp  [ebx],',' ;test for comma
        jne @f
        dec ebx
@@:
    


for a number like 4,143,321.433 the string will look like this:
Code:
db 'x,xxx,xxx.xxx'
    


if you give a string like this:
Code:
db ',,,,,,,,,,,,,x'
    

the function will give this result for the number 1234567
Code:
db '1,2,3,4,5,6,7'
    



but it is possible to modify the algo

Code:
.loop:
        dec ebx
        cmp byte[ebx],'.'
        je .loop
        cmp byte[ebx],','
        je .loop
    


and then, the result of number 12345 with string 'X,,X,,x,,,,,x,,,,,x' will be '1,,2,,3,,,,,4,,,,,5'
Post 01 Aug 2011, 11:20
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
libc's sprintf or fasmlib's str.ins plus simple loop
Post 01 Aug 2011, 16:06
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DOS386



Joined: 08 Dec 2006
Posts: 1901
DOS386
me239 wrote:
Hey everyone! I was wondering if anyone had any example procedures for adding commas into number strings eg. 12345 = 12,345 Thanks!


NO Shocked But I have cool code adding apo's instead ... so your "12,345" won't become "12+345/1'000" (imagine you get just cca 12 $$$ instead of 12'345 $$$ for your work Very Happy )
Post 02 Aug 2011, 13:09
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