user: 这段汇编代码用C语言表示是什么样的：

```asm
<levenshtein>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  mov    %rdi,%r12
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  call   <strlen@plt>
  mov    %rbx,%rdi
  mov    %eax,%r13d
  call   <strlen@plt>
  lea    0x1(%r13),%edi
  mov    %rsp,%rcx
  mov    %eax,-0x4c(%rbp)
  add    $0x1,%eax
  imul   %rdi,%rax
  mov    %rdi,-0x58(%rbp)
  lea    0xf(,%rax,4),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L18
L87:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L87
L18:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L93
L91:
  lea    0x3(%rsp),%rdi
  mov    -0x4c(%rbp),%r8d
  mov    %rdi,%rax
  and    $0xfffffffffffffffc,%rdi
  shr    $0x2,%rax
  movl   $0x0,0x0(,%rax,4)
  test   %r8d,%r8d
  je     L138
  mov    -0x58(%rbp),%rsi
  xor    %ecx,%ecx
  mov    $0x1,%eax
  cs nopw 0x0(%rax,%rax,1)
L90:
  mov    %eax,%edx
  add    $0x1,%ecx
  add    $0x1,%eax
  imul   %rsi,%rdx
  mov    %ecx,(%rdi,%rdx,4)
  cmp    %eax,%r8d
  jae    L90
  test   %r13d,%r13d
  je     L140
L54:
  mov    $0x1,%eax
  xchg   %ax,%ax
L38:
  lea    -0x1(%rax),%edx
  mov    %eax,%ecx
  add    $0x1,%eax
  mov    (%rdi,%rdx,4),%edx
  add    $0x1,%edx
  mov    %edx,(%rdi,%rcx,4)
  cmp    %eax,%r13d
  jae    L38
  mov    -0x4c(%rbp),%eax
  test   %eax,%eax
  je     L61
L140:
  mov    %rbx,-0x48(%rbp)
  mov    $0x1,%r15d
  nopl   0x0(%rax,%rax,1)
L137:
  test   %r13d,%r13d
  je     L31
  mov    -0x48(%rbp),%rax
  lea    -0x1(%r15),%r11d
  mov    %r15d,%r10d
  xor    %r9d,%r9d
  mov    $0x1,%r8d
  movzbl (%rax),%r14d
  mov    -0x58(%rbp),%rax
  imul   %rax,%r11
  imul   %rax,%r10
  nopl   0x0(%rax)
L16:
  mov    %r8d,%esi
  mov    %r9d,%ebx
  lea    (%rsi,%r11,1),%rax
  mov    (%rdi,%rax,4),%ecx
  lea    (%rbx,%r10,1),%rax
  mov    (%rdi,%rax,4),%edx
  xor    %eax,%eax
  add    $0x1,%ecx
  add    $0x1,%edx
  cmp    %r14b,(%r12,%r9,1)
  setne  %al
  add    %r11,%rbx
  add    (%rdi,%rbx,4),%eax
  cmp    %eax,%ecx
  mov    %eax,%ebx
  cmovbe %ecx,%ebx
  cmp    %eax,%edx
  cmovbe %edx,%eax
  cmp    %edx,%ecx
  cmovb  %ebx,%eax
  add    %r10,%rsi
  add    $0x1,%r8d
  add    $0x1,%r9
  mov    %eax,(%rdi,%rsi,4)
  cmp    %r8d,%r13d
  jae    L16
L31:
  addq   $0x1,-0x48(%rbp)
  add    $0x1,%r15d
  cmp    %r15d,-0x4c(%rbp)
  jae    L137
L61:
  mov    -0x4c(%rbp),%edx
  imul   -0x58(%rbp),%rdx
  mov    %r13d,%eax
  add    %rdx,%rax
  mov    (%rdi,%rax,4),%eax
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L84
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L93:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L91
L138:
  test   %r13d,%r13d
  jne    L54
  jmp    L61
L84:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int levenshtein(char *s1, char *s2) {
  unsigned int x, y, s1len, s2len;
  s1len = strlen(s1);
  s2len = strlen(s2);
  unsigned int matrix[s2len + 1][s1len + 1];
  matrix[0][0] = 0;
  for (x = 1; x <= s2len; x++)
    matrix[x][0] = matrix[x - 1][0] + 1;
  for (y = 1; y <= s1len; y++)
    matrix[0][y] = matrix[0][y - 1] + 1;
  for (x = 1; x <= s2len; x++)
    for (y = 1; y <= s1len; y++)
      matrix[x][y] = ((matrix[x - 1][y] + 1) < (matrix[x][y - 1] + 1) ? ((matrix[x - 1][y] + 1) < (matrix[x - 1][y - 1] + (s1[y - 1] == s2[x - 1] ? 0 : 1)) ? (matrix[x - 1][y] + 1) : (matrix[x - 1][y - 1] + (s1[y - 1] == s2[x - 1] ? 0 : 1))) : ((matrix[x][y - 1] + 1) < (matrix[x - 1][y - 1] + (s1[y - 1] == s2[x - 1] ? 0 : 1)) ? (matrix[x][y - 1] + 1) : (matrix[x - 1][y - 1] + (s1[y - 1] == s2[x - 1] ? 0 : 1))));
  return (matrix[s2len][s1len]);
}
```