Counting Nearly Matching Elements Write a procedure named CountNearMatches that
ID: 3718493 • Letter: C
Question
Counting Nearly Matching Elements Write a procedure named CountNearMatches that receives pointers to two arrays of signed doublewords, a parameter that indicates the length of the two arrays, and a parameter that indicates the maximum allowed difference (called diff) between any two matching elements. For each element x(i) in the ?rst array, if the difference between it and the corresponding y(i) in the second array is less than or equal to diff, increment a count. At the end, return a count of the number of nearly matching array elements in EAX. Display this value.Write a test program that calls CountNearMatches and passes pointers to two different pairs of arrays. Use the INVOKE statement to call your procedure and pass stack parameters. Create a PROTO declaration for CountMatches. Save and restore any registers (other than EAX) changed by your procedure. N.B: PLEASE DO YOUR OWN WORK. PROF APPLIES PLAGIARISM CHECKER. Counting Nearly Matching Elements Write a procedure named CountNearMatches that receives pointers to two arrays of signed doublewords, a parameter that indicates the length of the two arrays, and a parameter that indicates the maximum allowed difference (called diff) between any two matching elements. For each element x(i) in the ?rst array, if the difference between it and the corresponding y(i) in the second array is less than or equal to diff, increment a count. At the end, return a count of the number of nearly matching array elements in EAX. Display this value.
Write a test program that calls CountNearMatches and passes pointers to two different pairs of arrays. Use the INVOKE statement to call your procedure and pass stack parameters. Create a PROTO declaration for CountMatches. Save and restore any registers (other than EAX) changed by your procedure. N.B: PLEASE DO YOUR OWN WORK. PROF APPLIES PLAGIARISM CHECKER. Counting Nearly Matching Elements Write a procedure named CountNearMatches that receives pointers to two arrays of signed doublewords, a parameter that indicates the length of the two arrays, and a parameter that indicates the maximum allowed difference (called diff) between any two matching elements. For each element x(i) in the ?rst array, if the difference between it and the corresponding y(i) in the second array is less than or equal to diff, increment a count. At the end, return a count of the number of nearly matching array elements in EAX. Display this value.
Write a test program that calls CountNearMatches and passes pointers to two different pairs of arrays. Use the INVOKE statement to call your procedure and pass stack parameters. Create a PROTO declaration for CountMatches. Save and restore any registers (other than EAX) changed by your procedure. N.B: PLEASE DO YOUR OWN WORK. PROF APPLIES PLAGIARISM CHECKER.
Explanation / Answer
ANSWER
GIVEN BY
CountNearMatches PROTO, ptrArray1:PTR SDWORD, ptrArray2:PTR SDWORD, szArray:DWORD, diff:DWORD
.data
array1a SDWORD 1,2,3,4
array1b SDWORD 5,7,8,7
array2a SDWORD 5,6,7,5,
array2b SDWORD 8,2,5,4
cnt DWORD ?,0
dif1 DWORD 11
dif2 DWORD 0
.code
main PROC
INVOKE CountNearMatches, ADDR array1a, ADDR array1b, LENGTHOF array1a, dif1
call WriteInt
call Crlf
INVOKE CountNearMatches, ADDR array2a, ADDR array2b, LENGTHOF array2a, dif2
call WriteInt
call Crlf
exit
main ENDP
CountNearMatches PROC USES edx ebx edi esi ecx, ptrArray1:PTR SDWORD, ptrArray2:PTR SDWORD, szArray:DWORD, diff:DWORD
mov esi,ptrArray1
mov edi,ptrArray2
mov ecx,szArray
; Loop L1:
; compare sets
mov ebx,0
mov ebx,[esi]
mov edx,0
mov edx,[edi]
.IF ebx > edx
mov eax,ebx
sub eax,edx
.ELSE
mov eax,edx
sub eax,ebx
.ENDIF
.IF (eax <= diff)
inc cnt
.ENDIF
add esi, SIZEOF SDWORD
add edi, SIZEOF SDWORD
loop L1
; increment count
mov eax,0
mov eax,cnt
mov cnt,0
ret
CountNearMatches ENDP
END main