Appendix A. Demo

#include <stdio.h>

void InputArray(double Matrix[5][10], size_t rows, size_t cols);
void Process(double Matrix[5][10], double *out, size_t rows, size_t cols);
void OutArray(double *out, size_t N);

void InputArray(double Matrix[5][10], size_t rows, size_t cols) {
  for (size_t R = 0; R < rows; R++) {
    for (size_t C = 0; C < cols; C++) {
      printf("Matrix[%d, %d] = ", R+1, C+1);
      scanf("%lg", &Matrix[R][C]);
     }
  }
}

void Process(double Matrix[5][10], double *out,
             size_t rows, size_t cols) {
  for (size_t C = 0; C < cols; C++) {
    int min = Matrix[0][C], max = Matrix[0][C];
    for (size_t R = 1; R < rows; R++) {
      if (Matrix[R][C] < min) {
        min = Matrix[R][C];
      }
      if (Matrix[R][C] > max) {
        max = Matrix[R][C];
      }
    }
    out[C] = max - min;
  }
}

void PrintArray(double *out, size_t N) {
  for (size_t i = 0; i < N; i++) {
    printf("out[%d] = %lg\n", i, out[i]);
  }
}

int main(int argc, char **argv) {
  size_t rows, cols;
  double Matrix[5][10];
  double out[10];

  printf("rows: N = ");
  scanf("%d", &rows);
  if (rows > 5)
    printf("\nNumber of rows must be 5 or less");

  printf("cols: N = ");
  scanf("%d", &cols);
  if (cols > 10)
    printf("\nNumber of columns must be 10 or less");

  printf("\n");
  InputArray(Matrix, rows, cols);
  Process(Matrix, out, rows, cols);
  PrintArray(out, cols);

  printf("sizeof(void*) = %d\n", sizeof(void*));
  return 0;
}

	public _Process
	.align	16
_Process	proc near
	push	EBP
	push	EBX
	push	EDI
	push	ESI
	sub	ESP, 4
	mov	EAX, DWORD PTR [ESP + 36]
	mov	DWORD PTR [ESP], EAX
	test	EAX, EAX
	jle	.LBB2_10
.LBB2_1:
	mov	EAX, DWORD PTR [ESP + 24]
	lea	EAX, DWORD PTR [EAX + 80]
	mov	ECX, DWORD PTR [ESP + 32]
	lea	ECX, DWORD PTR [ECX - 1]
	xor	EDX, EDX
.LBB2_2:
	mov	ESI, DWORD PTR [ESP + 24]
	cvttsd2si	ESI, QWORD PTR [ESI + EDX]
	lea	EDI, DWORD PTR [EAX + EDX]
	cmp	DWORD PTR [ESP + 32], 1
	jle	.LBB2_11
.LBB2_3:
	mov	EBP, ECX
	mov	EBX, ESI
	.align	16
.LBB2_4:
	movsd	XMM0, QWORD PTR [EDI]
	cvtsi2sd	XMM1, ESI
	ucomisd	XMM1, XMM0
	jbe	.LBB2_6
.LBB2_5:
	cvttsd2si	ESI, XMM0
.LBB2_6:
	cvtsi2sd	XMM1, EBX
	ucomisd	XMM0, XMM1
	jbe	.LBB2_8
.LBB2_7:
	cvttsd2si	EBX, XMM0
.LBB2_8:
	add	EDI, 80
	dec	EBP
	jne	.LBB2_4
.LBB2_9:
	sub	EBX, ESI
	cvtsi2sd	XMM0, EBX
	mov	ESI, DWORD PTR [ESP + 28]
	movsd	QWORD PTR [EDX + ESI], XMM0
	add	EDX, 8
	dec	DWORD PTR [ESP]
	jne	.LBB2_2
.LBB2_10:
	add	ESP, 4
	pop	ESI
	pop	EDI
	pop	EBX
	pop	EBP
	ret
.LBB2_11:
	mov	EBX, ESI
	jmp	.LBB2_9
_Process	endp