user: 这段汇编代码用C语言表示是什么样的？

```asm
<FormatCCF>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x720,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x2718(%rsp)
  xor    %eax,%eax
  movzbl (%rdi),%edx
  test   %dl,%dl
  je     L8
  mov    %rdi,%rax
  movabs $0x7fffffe03ff0001,%rsi
  jmp    L115
L46:
  movzbl (%rax),%edx
  mov    %edx,%ecx
  and    $0xfffffffd,%ecx
  cmp    $0x8,%cl
  je     L287
  cmp    $0xd,%dl
  jne    L198
L287:
  movb   $0x20,(%rax)
L31:
  add    $0x1,%rax
  movzbl (%rax),%edx
  test   %dl,%dl
  je     L114
L115:
  lea    -0x61(%rdx),%ecx
  cmp    $0x19,%cl
  ja     L46
  sub    $0x20,%edx
  mov    %dl,(%rax)
L198:
  movzbl (%rax),%edi
  lea    -0x20(%rdi),%edx
  cmp    $0x3a,%dl
  ja     L49
  bt     %rdx,%rsi
  jb     L31
  mov    $0x2d,%r12d
  jmp    L337
L114:
  mov    $0x0,%eax
  cmpb   $0x0,(%rbx)
  jne    L20
L8:
  movslq %ebp,%rax
  movb   $0x0,(%rsp,%rax,1)
  mov    %rsp,%rdi
  call   <strlen@plt>
  mov    $0x2b,%r12d
  cmp    $0x17,%eax
  jle    L337
  mov    %rsp,%rdi
  call   <strlen@plt>
  movslq %eax,%r12
  imul   $0x66666667,%r12,%r12
  sar    $0x21,%r12
  cltd
  sub    %edx,%r12d
  lea    (%r12,%r12,4),%edx
  sub    %edx,%eax
  mov    %eax,%r12d
  jne    L139
  mov    %rsp,%rdi
  call   <strlen@plt>
  cmp    $0x1414,%eax
  jg     L206
  lea    -0x1(%rbp),%eax
  cltq
  movb   $0x0,(%rsp,%rax,1)
  mov    %rsp,%rsi
  mov    %rbx,%rdi
  call   <strcpy@plt>
  jmp    L337
L91:
  add    $0x1,%eax
  movslq %ebp,%rdx
  mov    %cl,(%rsp,%rdx,1)
  lea    0x1(%rbp),%ebp
L7:
  movslq %eax,%rdx
  movzbl (%rbx,%rdx,1),%ecx
  lea    0x1(%rax),%edx
  movslq %edx,%rdx
  cmp    $0x20,%cl
  jne    L260
L183:
  mov    %edx,%eax
  add    $0x1,%rdx
  movzbl -0x1(%rbx,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L183
L260:
  test   %cl,%cl
  je     L160
  lea    0x1(%rax),%edx
  lea    0x1(%rbp),%esi
  movslq %ebp,%rbp
  mov    %cl,(%rsp,%rbp,1)
  movslq %edx,%rcx
  movzbl (%rbx,%rcx,1),%ecx
  cmp    $0x20,%cl
  jne    L291
  lea    0x2(%rax),%edx
  movslq %edx,%rdx
L82:
  mov    %edx,%eax
  add    $0x1,%rdx
  movzbl -0x1(%rbx,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L82
L54:
  test   %cl,%cl
  je     L1
  add    $0x1,%eax
  movslq %esi,%rdx
  mov    %cl,(%rsp,%rdx,1)
  lea    0x1(%rsi),%esi
L1:
  lea    0x1(%rsi),%ebp
  movslq %esi,%rsi
  movb   $0x20,(%rsp,%rsi,1)
  movslq %eax,%rdx
  cmpb   $0x0,(%rbx,%rdx,1)
  je     L8
L20:
  movslq %eax,%rdx
  movzbl (%rbx,%rdx,1),%ecx
  lea    0x1(%rax),%edx
  movslq %edx,%rdx
  cmp    $0x20,%cl
  jne    L321
L192:
  mov    %edx,%eax
  add    $0x1,%rdx
  movzbl -0x1(%rbx,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L192
L321:
  test   %cl,%cl
  je     L187
  add    $0x1,%eax
  movslq %ebp,%rdx
  mov    %cl,(%rsp,%rdx,1)
  lea    0x1(%rbp),%ebp
L187:
  movslq %eax,%rdx
  movzbl (%rbx,%rdx,1),%ecx
  lea    0x1(%rax),%edx
  movslq %edx,%rdx
  cmp    $0x20,%cl
  jne    L313
L141:
  mov    %edx,%eax
  add    $0x1,%rdx
  movzbl -0x1(%rbx,%rdx,1),%ecx
  cmp    $0x20,%cl
  je     L141
  test   %cl,%cl
  je     L7
  jmp    L91
L291:
  mov    %edx,%eax
  jmp    L54
L49:
  mov    $0x2d,%r12d
L337:
  mov    0x2718(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L117
  mov    %r12d,%eax
  add    $0x2720,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L139:
  mov    $0x2b,%r12d
  jmp    L337
L206:
  mov    $0x2b,%r12d
  jmp    L337
L160:
  movslq %eax,%rdx
  movzbl (%rbx,%rdx,1),%ecx
  mov    %ebp,%esi
  jmp    L54
L313:
  test   %cl,%cl
  jne    L91
  movslq %eax,%rdx
  movzbl (%rbx,%rdx,1),%ecx
  jmp    L260
L117:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int FormatCCF(char *ccf) {
  char st[10000];
  int j, i;
  i = 0;
  while (ccf[i]) {
    if (ccf[i] >= 'a' && ccf[i] <= 'z')
      ccf[i] -= 'a' - 'A';
    if (ccf[i] == 13 || ccf[i] == 10 || ccf[i] == 8)
      ccf[i] = ' ';
    if ((ccf[i] < '0' || ccf[i] > '9') && (ccf[i] < 'A' || ccf[i] > 'Z') && ccf[i] != ' ') {
      return (45);
    }
    i++;
  }
  i = 0;
  while (ccf[i]) {
    while (ccf[i] == ' ')
      i++;
    if (ccf[i])
      st[j++] = ccf[i++];
    while (ccf[i] == ' ')
      i++;
    if (ccf[i])
      st[j++] = ccf[i++];
    while (ccf[i] == ' ')
      i++;
    if (ccf[i])
      st[j++] = ccf[i++];
    while (ccf[i] == ' ')
      i++;
    if (ccf[i])
      st[j++] = ccf[i++];
    st[j++] = ' ';
  }
  st[j] = 0;
  if (strlen(st) < 24 || (strlen(st) % 5) || strlen(st) > 5140)
    return (43);
  st[j - 1] = 0;
  strcpy(ccf, st);
  return (0);
}
```