user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<mat_d>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %esi,%r10d
  mov    %ecx,%eax
  movslq %edx,%rsi
  mov    %rsi,-0x18(%rsp)
  lea    (%rsi,%rsi,1),%r11
  lea    -0x1(%r10),%r13d
  movslq %r13d,%r13
  mov    %r13,%rcx
  mov    $0x0,%edi
  jmp    L260
L337:
  add    $0x1,%edi
L260:
  test   %ecx,%ecx
  js     L187
  mov    (%rbx,%rcx,8),%rsi
  sub    $0x1,%rcx
  cmp    %ax,(%rsi,%r11,1)
  je     L337
L187:
  lea    0x1(%r10),%esi
  movslq %esi,%rsi
  mov    %rsi,%rcx
  mov    $0x0,%ebp
  jmp    L136
L77:
  add    $0x1,%ebp
L136:
  cmp    %rcx,%r8
  jle    L339
  mov    (%rbx,%rcx,8),%r12
  add    $0x1,%rcx
  cmp    %ax,(%r12,%r11,1)
  je     L77
L339:
  cmp    %bp,%di
  jg     L246
  cmp    $0xfe,%bp
  jg     L48
  mov    %ebp,%ecx
  mov    %edi,%ebp
  mov    %ecx,%edi
L246:
  movslq %r10d,%rcx
  mov    %rcx,-0x8(%rsp)
  lea    0x0(,%rcx,8),%r15
  lea    (%rbx,%r15,1),%r12
  mov    -0x18(%rsp),%rcx
  lea    -0x2(%rcx,%rcx,1),%rcx
  mov    %rcx,-0x10(%rsp)
  mov    %rcx,%r11
  mov    %edx,%ecx
  mov    %dx,-0x1a(%rsp)
L225:
  mov    %edx,%r14d
  sub    %ecx,%r14d
  mov    %r14w,-0x1c(%rsp)
  sub    $0x1,%ecx
  js     L176
  mov    (%r12),%r14
  movzwl (%r14,%r11,1),%r14d
  sub    $0x2,%r11
  cmp    %ax,%r14w
  je     L225
L176:
  movzwl -0x1c(%rsp),%ecx
  cmp    %cx,%bp
  jg     L255
  cmp    %cx,%di
  cmovg  %ecx,%edi
  mov    %bp,-0x1c(%rsp)
  mov    %edi,%ebp
L255:
  movslq %edx,%rdi
  add    $0x1,%rdi
  mov    %rdi,%rcx
  mov    $0x0,%r11d
  jmp    L39
L48:
  mov    %edi,%ebp
  mov    $0xff,%edi
  jmp    L246
L346:
  add    $0x1,%r11d
L39:
  cmp    %rcx,%r9
  jle    L138
  mov    (%r12),%r14
  movzwl (%r14,%rcx,2),%r14d
  add    $0x1,%rcx
  cmp    %ax,%r14w
  je     L346
L138:
  movzwl -0x1c(%rsp),%ecx
  cmp    %r11w,%cx
  jg     L206
  cmp    %r11w,%bp
  cmovg  %r11d,%ebp
  mov    %ecx,%r11d
  mov    %bp,-0x1c(%rsp)
L206:
  mov    -0x18(%rsp),%rcx
  neg    %rcx
  lea    (%r15,%rcx,8),%r14
  add    %rbx,%r14
  mov    -0x10(%rsp),%r12
  mov    %edx,%ecx
  sub    %edx,%r10d
L341:
  movzwl -0x1a(%rsp),%ebp
  sub    %ecx,%ebp
  sub    $0x1,%ecx
  mov    %r10d,%r15d
  add    %ecx,%r15d
  js     L308
  test   %ecx,%ecx
  js     L308
  mov    (%r14,%r12,4),%r15
  movzwl (%r15,%r12,1),%r15d
  sub    $0x2,%r12
  cmp    %ax,%r15w
  je     L341
L308:
  movswl %bp,%ebp
  imul   $0xe,%ebp,%ebp
  add    $0x7,%ebp
  movslq %ebp,%rcx
  imul   $0x66666667,%rcx,%rcx
  sar    $0x22,%rcx
  sar    $0x1f,%ebp
  sub    %ebp,%ecx
  mov    %ecx,%ebp
  cmp    %cx,%r11w
  jg     L73
  mov    %r11d,%ebp
  movzwl -0x1c(%rsp),%r15d
  cmp    %cx,%r15w
  mov    %r15d,%r11d
  cmovg  %ecx,%r11d
L73:
  mov    %rdi,%r10
  mov    $0x0,%ecx
  jmp    L268
L46:
  mov    (%rbx,%r13,8),%r12
  movzwl (%r12,%r10,2),%r12d
  sub    $0x1,%r13
  add    $0x1,%r10
  cmp    %ax,%r12w
  jne    L241
  add    $0x1,%ecx
L268:
  cmp    %r9,%r10
  jge    L241
  test   %r13d,%r13d
  jns    L46
L241:
  movswl %cx,%ecx
  imul   $0xe,%ecx,%ecx
  add    $0x7,%ecx
  movslq %ecx,%r10
  imul   $0x66666667,%r10,%r10
  sar    $0x22,%r10
  sar    $0x1f,%ecx
  sub    %ecx,%r10d
  mov    %r10d,%ecx
  cmp    %r10w,%bp
  jg     L253
  mov    %ebp,%ecx
  cmp    %r10w,%r11w
  cmovle %r11d,%r10d
  mov    %r10d,%ebp
L253:
  mov    $0x0,%r10d
  mov    -0x8(%rsp),%r11
  sub    -0x18(%rsp),%r11
  jmp    L96
L305:
  add    $0x1,%r10d
L96:
  cmp    %r9,%rdi
  jge    L178
  lea    (%r11,%rdi,1),%r12
  cmp    %r8,%r12
  jge    L178
  mov    (%r14,%rdi,8),%r12
  movzwl (%r12,%rdi,2),%r12d
  add    $0x1,%rdi
  cmp    %ax,%r12w
  je     L305
L178:
  movswl %r10w,%r10d
  imul   $0xe,%r10d,%r10d
  add    $0x7,%r10d
  movslq %r10d,%rdi
  imul   $0x66666667,%rdi,%rdi
  sar    $0x22,%rdi
  sar    $0x1f,%r10d
  sub    %r10d,%edi
  mov    %edi,%r9d
  cmp    %di,%cx
  jg     L75
  mov    %ecx,%r9d
  cmp    %di,%bp
  cmovle %ebp,%edi
  mov    %edi,%ecx
  mov    -0x10(%rsp),%r11
  movzwl -0x1a(%rsp),%r10d
L4:
  mov    %r10d,%edi
  sub    %edx,%edi
  sub    $0x1,%edx
  js     L183
  cmp    %r8,%rsi
  jge    L183
  mov    (%rbx,%rsi,8),%rbp
  movzwl 0x0(%rbp,%r11,1),%ebp
  add    $0x1,%rsi
  sub    $0x2,%r11
  cmp    %ax,%bp
  je     L4
L183:
  movswl %di,%edi
  imul   $0xe,%edi,%edi
  add    $0x7,%edi
  movslq %edi,%rdx
  imul   $0x66666667,%rdx,%rdx
  sar    $0x22,%rdx
  sar    $0x1f,%edi
  sub    %edi,%edx
  mov    %edx,%esi
  cmp    %dx,%r9w
  jg     L83
  cmp    %dx,%cx
  cmovg  %edx,%ecx
  mov    %r9d,%esi
  cmp    %cx,%r9w
  mov    $0x0,%edx
  cmovne %edx,%eax
L84:
  test   %si,%si
  cmove  %esi,%eax
  cwtl
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L75:
  mov    -0x10(%rsp),%r11
  movzwl -0x1a(%rsp),%r10d
  jmp    L4
L83:
  mov    $0x0,%eax
  jmp    L84
```

assistant: ```c
int mat_d(the_image, a, b, value, rows, cols)
int a, b;
short **the_image, value;
long cols, rows;
{
  int i, j, measuring;
  short dist1 = 0, dist2 = 0, dist3 = 0, dist4 = 0, dist5 = 0, dist6 = 0, dist7 = 0, dist8 = 0, min1 = 255, min2 = 255, result = 0;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    i--;
    if (i >= 0) {
      if (the_image[i][j] == value)
        dist1++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  result = dist1;
  min1 = dist1;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    i++;
    if (i <= rows - 1) {
      if (the_image[i][j] == value)
        dist2++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  if (dist2 <= result)
    result = dist2;
  if (dist2 < min1) {
    min2 = min1;
    min1 = dist2;
  } else if (dist2 < min2)
    min2 = dist2;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j--;
    if (j >= 0) {
      if (the_image[i][j] == value)
        dist3++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  if (dist3 <= result)
    result = dist3;
  if (dist3 < min1) {
    min2 = min1;
    min1 = dist3;
  } else if (dist3 < min2)
    min2 = dist3;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j++;
    if (j <= cols - 1) {
      if (the_image[i][j] == value)
        dist4++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  if (dist4 <= result)
    result = dist4;
  if (dist4 < min1) {
    min2 = min1;
    min1 = dist4;
  } else if (dist4 < min2)
    min2 = dist4;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j--;
    i--;
    if (j >= 0 && i >= 0) {
      if (the_image[i][j] == value)
        dist5++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  dist5 = ((dist5 * 14) + 7) / 10;
  if (dist5 <= result)
    result = dist5;
  if (dist5 < min1) {
    min2 = min1;
    min1 = dist5;
  } else if (dist5 < min2)
    min2 = dist5;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j++;
    i--;
    if (j <= cols - 1 && i >= 0) {
      if (the_image[i][j] == value)
        dist6++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  dist6 = ((dist6 * 14) + 7) / 10;
  if (dist6 <= result)
    result = dist6;
  if (dist6 < min1) {
    min2 = min1;
    min1 = dist6;
  } else if (dist6 < min2)
    min2 = dist6;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j++;
    i++;
    if (j <= cols - 1 && i <= rows - 1) {
      if (the_image[i][j] == value)
        dist7++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  dist7 = ((dist7 * 14) + 7) / 10;
  if (dist7 <= result)
    result = dist7;
  if (dist7 < min1) {
    min2 = min1;
    min1 = dist7;
  } else if (dist7 < min2)
    min2 = dist7;
  measuring = 1;
  i = a;
  j = b;
  while (measuring) {
    j--;
    i++;
    if (j >= 0 && i <= rows - 1) {
      if (the_image[i][j] == value)
        dist8++;
      else
        measuring = 0;
    } else
      measuring = 0;
  }
  dist8 = ((dist8 * 14) + 7) / 10;
  if (dist8 <= result)
    result = dist8;
  if (dist8 < min1) {
    min2 = min1;
    min1 = dist8;
  } else if (dist8 < min2)
    min2 = dist8;
  if (min1 == min2)
    result = value;
  else
    result = 0;
  if (min1 == 0)
    result = 0;
  return (result);
}
```