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by ununoctio
5939 days ago
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{In Pascal Language+Assembly}
{$ASMMODE INTEL}
function equi (A : Array of longint; n : longint ) : longint;
var c:Longint;
label noOverflow1;
label noOverflow2;
label ciclo;
label fine;
label Over;
label tot;
Begin
Asm
DEC n
JS over
XOR ECX, ECX {Somma1}
XOR EDI, EDI {Somma2}
XOR EAX, EAX
MOV c, EDI
MOV ESI, n
tot:
MOV EDX, A
MOV EDX, [EDX+ESI*4]
PUSH EDX
ADD ECX, EDX
JNO nooverflow1
ADD c, ECX
nooverflow1:
DEC ESI
JNS tot;
SUB ECX, c
SUB EDI, c
ciclo:
POP EDX
SUB ECX, EDX
CMP ECX, EDI
JE fine
ADD EDI, EDX
JNO nooverflow2
DEC EDI
nooverflow2:
CMP EAX, n
JA over
INC EAX
JMP ciclo
over:
MOV EAX, -1
fine:
end;
End; |
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