.386
.model flat,stdcall
option casemap:none
include windows.inc
include kernel32.inc
includelib kernel32.lib
include user32.inc
includelib user32.lib
MAXLEN equ 8000
.data
BigNum dword 1,MAXLEN dup(0)
LenBN dword 1
Result dword 0,MAXLEN dup(0)
LenR dword 1
Temp dword 2,MAXLEN dup(0)
LenT dword 1
Exp dword ?
szFileName byte 'answer.txt',0
szFileNamei byte 'input.txt',0
szCaption byte 'File err',0
szText byte 'Cannot create file!',0
hFile dword ?
hFilei dword ?
szBuffer byte MAXLEN dup (0)
.code
Input proc addExp:dword
local Num:dword,ten:dword
pushf
pushad
lea esi,Num
invoke ReadFile,hFilei,offset szBuffer,MAXLEN,esi,0
mov ten,10
xor ecx,ecx
xor eax,eax
xor ebx,ebx
Conv: cmp ecx,Num
jz eConv
mov bl,szBuffer[ecx]
test bl,bl
jz eConv
cmp bl,0ah
jz eConv
cmp bl,0dh
jz eConv
sub bl,48
mul ten
add eax,ebx
inc ecx
jmp Conv
eConv:
mov esi,addExp
mov [esi],eax
popad
popf
ret
Input endp
OutIt proc BN:dword,Len:dword
local Num:dword,endl:byte
pushf
pushad
mov esi,BN
lea edi,szBuffer
add edi,Len
dec edi
xor ecx,ecx
Conv: cmp ecx,Len
jz eConv
mov eax,[esi]
add al,30h
mov [edi],al
add esi,4
dec edi
inc ecx
jmp Conv
eConv:
lea esi,Num
invoke WriteFile,hFile,offset szBuffer,Len,esi,0
mov al,10
mov endl,al
invoke WriteFile,hFile,addr endl,1,esi,0
popad
popf
ret
OutIt endp
Multi proc BigA:dword,LenA:dword,BigB:dword,LenB:dword
local ten:dword
pushad
pushf
xor ecx,ecx
Init: cmp ecx,MAXLEN
jz eInit
mov Result[4*ecx],0
inc ecx
jmp Init
eInit:
mov esi,BigA
xor ecx,ecx
For1: cmp ecx,LenA
jz eFor1
xor edx,edx
mov edi,BigB
For2: cmp edx,LenB
jz eFor2
push edx
mov eax,[esi]
mul dword ptr [edi]
pop edx
mov ebx,ecx
add ebx,edx
add Result[4*ebx],eax
inc edx
add edi,4
jmp For2
eFor2:
inc ecx
add esi,4
jmp For1
eFor1:
mov eax,LenA
add eax,LenB
mov LenR,eax
lea esi,Result
xor ecx,ecx
mov ten,10
Carry: cmp ecx,LenR
jz eCarry
mov eax,[esi]
cdq
div ten
mov [esi],edx
add esi,4
add [esi],eax
inc ecx
jmp Carry
eCarry:
mov ecx,LenR
Zero: mov eax,Result[4*ecx]
test eax,eax
jnz eZero
dec ecx
jmp Zero
eZero:
inc ecx
mov LenR,ecx
popf
popad
ret
Multi endp
CopyRto proc BigD:dword,addLenD:dword
pushf
pushad
mov esi,addLenD
mov eax,LenR
mov [esi],eax
lea esi,Result
mov edi,BigD
xor ecx,ecx
Copy: cmp ecx,LenR
jz eCopy
mov eax,[esi]
mov [edi],eax
add esi,4
add edi,4
inc ecx
jmp Copy
eCopy:
popad
popf
ret
CopyRto endp
Calc proc exp:dword
local two:dword
pushf
pushad
mov eax,exp
mov two,2
MainProc: test eax,eax
jz eMainProc
cdq
div two
test edx,edx
jz Next2
invoke Multi,offset BigNum,LenBN,offset Temp,LenT
invoke CopyRto,offset BigNum,offset LenBN
Next2: invoke Multi,offset Temp,LenT,offset Temp,LenT
invoke CopyRto,offset Temp,offset LenT
jmp MainProc
eMainProc:
popad
popf
ret
Calc endp
start:
invoke CreateFile,offset szFileName,GENERIC_WRITE,FILE_SHARE_READ,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0
mov hFile,eax
cmp eax,INVALID_HANDLE_VALUE
jnz next1
invoke MessageBox,0,offset szText,offset szCaption,MB_OK
invoke CloseHandle,eax
jmp Exit
next1:
invoke CreateFile,offset szFileNamei,GENERIC_READ,FILE_SHARE_READ,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0
mov hFilei,eax
cmp eax,INVALID_HANDLE_VALUE
jnz next2
invoke MessageBox,0,offset szText,offset szCaption,MB_OK
invoke CloseHandle,eax
jmp Exit
next2:
invoke Input,offset Exp
invoke Calc,Exp
invoke OutIt,offset BigNum,LenBN
Exit: invoke ExitProcess,0
end start
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