user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<levenshtein>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x38,%rsp
  call   <strlen@plt>
  mov    %r12,%rdi
  mov    %eax,%ebx
  mov    %eax,0x1c(%rsp)
  call   <strlen@plt>
  lea    0x8(,%rax,8),%edi
  mov    %eax,%r14d
  call   <malloc@plt>
  test   %ebx,%ebx
  je     L24
  mov    %rax,%r15
  test   %r14d,%r14d
  jne    L153
  jmp    L65
  nop
L15:
  add    $0x1,%rbp
  add    $0x1,%r12
  sub    $0x1,%r14d
  subl   $0x1,0x1c(%rsp)
  je     L24
  test   %r14d,%r14d
  je     L65
L153:
  movsbl 0x0(%rbp),%edi
  call   <tolower@plt>
  movsbl (%r12),%edi
  mov    %rax,%rbx
  call   <tolower@plt>
  cmp    %rax,%rbx
  je     L15
L50:
  mov    %r14d,%ecx
  add    $0x1,%ecx
  je     L71
  cmp    $0x2,%r14d
  jbe    L64
  mov    %ecx,%edx
  movdqa D8(%rip),%xmm0
  movdqa D10(%rip),%xmm2
  mov    %r15,%rax
  shr    $0x2,%edx
  sub    $0x1,%edx
  shl    $0x4,%rdx
  lea    0x10(%r15,%rdx,1),%rdx
  nopl   0x0(%rax)
L38:
  movdqa %xmm0,%xmm1
  add    $0x10,%rax
  paddd  %xmm2,%xmm0
  movups %xmm1,-0x10(%rax)
  cmp    %rax,%rdx
  jne    L38
  mov    %ecx,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%cl
  je     L71
  mov    %eax,%edx
  mov    %eax,(%r15,%rdx,4)
  add    $0x1,%eax
  cmp    %eax,%ecx
  jbe    L71
L223:
  mov    %eax,%edx
  mov    %eax,(%r15,%rdx,4)
  add    $0x1,%eax
  cmp    %ecx,%eax
  jae    L71
  mov    %eax,%edx
  mov    %eax,(%r15,%rdx,4)
L71:
  movq   $0x0,0x8(%rsp)
  mov    %r14d,%eax
  mov    %rax,0x10(%rsp)
  lea    (%r15,%rax,4),%rax
  mov    %rax,0x28(%rsp)
  nopl   0x0(%rax)
L194:
  mov    0x8(%rsp),%rax
  xor    %r14d,%r14d
  mov    %eax,0x18(%rsp)
  lea    0x1(%rax),%r13d
  jmp    L103
  nopw   0x0(%rax,%rax,1)
L197:
  mov    %ecx,%r13d
L103:
  mov    0x8(%rsp),%rax
  movsbl 0x0(%rbp,%rax,1),%edi
  call   <tolower@plt>
  movsbl (%r12,%r14,1),%edi
  mov    %rax,%rbx
  call   <tolower@plt>
  xor    %ecx,%ecx
  cmp    %rax,%rbx
  je     L85
  mov    0x18(%rsp),%eax
  test   %eax,%eax
  je     L47
  test   %r14d,%r14d
  je     L47
  mov    0x18(%rsp),%eax
  sub    $0x1,%eax
  movsbl 0x0(%rbp,%rax,1),%edi
  call   <tolower@plt>
  movsbl (%r12,%r14,1),%edi
  mov    %rax,0x20(%rsp)
  call   <tolower@plt>
  cmp    %rax,0x20(%rsp)
  je     L188
L47:
  mov    $0x1,%ecx
L85:
  mov    0x4(%r15,%r14,4),%eax
  lea    0x1(%r13),%edi
  add    $0x1,%eax
  cmp    %edi,%eax
  cmova  %edi,%eax
  add    (%r15,%r14,4),%ecx
  mov    %r13d,(%r15,%r14,4)
  cmp    %ecx,%eax
  cmovbe %eax,%ecx
  add    $0x1,%r14
  cmp    %r14,0x10(%rsp)
  jne    L197
  mov    0x28(%rsp),%rax
  addq   $0x1,0x8(%rsp)
  mov    %ecx,(%rax)
  mov    0x8(%rsp),%rax
  cmp    %eax,0x1c(%rsp)
  ja     L194
  mov    %r15,%rdi
  mov    %ecx,0x8(%rsp)
  call   <free@plt>
  mov    0x8(%rsp),%r14d
L24:
  add    $0x38,%rsp
  mov    %r14d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L188:
  mov    0x8(%rsp),%rax
  movsbl 0x0(%rbp,%rax,1),%edi
  call   <tolower@plt>
  mov    %rax,0x20(%rsp)
  lea    -0x1(%r14),%eax
  movsbl (%r12,%rax,1),%edi
  call   <tolower@plt>
  xor    %ecx,%ecx
  cmp    %rax,0x20(%rsp)
  setne  %cl
  jmp    L85
L65:
  mov    0x1c(%rsp),%edx
  test   %edx,%edx
  je     L24
  test   %r14d,%r14d
  jne    L50
  mov    0x1c(%rsp),%r14d
  jmp    L24
L64:
  movl   $0x0,(%r15)
  mov    $0x1,%eax
  jmp    L223
```

tool_calls: name: disassemble_data
arguments: data_label: D8
type: byte[16]
name: disassemble_data
arguments: data_label: D10
type: byte[16]

tool: {"D8": [0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x03,0x00,0x00,0x00]}

tool: {"D10": [0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x04,0x00,0x00,0x00]}

assistant: ```c
unsigned int levenshtein(char *word1, char *word2) {
  unsigned int len1 = strlen(word1), len2 = strlen(word2);
  unsigned int *v = malloc((len2 + 1) * sizeof(unsigned int *));
  unsigned int i, j, current, next, cost;
  while (len1 > 0 && len2 > 0 && (tolower(word1[0]) == tolower(word2[0])))
    word1++, word2++, len1--, len2--;
  if (!len1)
    return len2;
  if (!len2)
    return len1;
  for (j = 0; j < len2 + 1; j++)
    v[j] = j;
  for (i = 0; i < len1; i++) {
    current = i + 1;
    for (j = 0; j < len2; j++) {
      cost = !((tolower(word1[i]) == tolower(word2[j])) || (i && j && (tolower(word1[i - 1]) == tolower(word2[j])) && (tolower(word1[i]) == tolower(word2[j - 1]))));
      next = ((((v[j + 1] + 1) < (current + 1) ? (v[j + 1] + 1) : (current + 1))) < (v[j] + cost) ? (((v[j + 1] + 1) < (current + 1) ? (v[j + 1] + 1) : (current + 1))) : (v[j] + cost));
      v[j] = current;
      current = next;
    }
    v[len2] = next;
  }
  free(v);
  return next;
}
```