user: 这段汇编代码用C语言表示是什么样的：

```asm
<btea>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %rdx,-0x58(%rbp)
  mov    -0x48(%rbp),%rax
  mov    (%rax),%rax
  mov    %rax,-0x30(%rbp)
  movq   $0x0,-0x28(%rbp)
  mov    $0x9e3779b9,%eax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x1,-0x50(%rbp)
  jle    L36
  mov    -0x50(%rbp),%rax
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x38(%rbp)
  mov    $0x34,%eax
  cqto
  idivq  -0x50(%rbp)
  add    $0x6,%rax
  mov    %rax,-0x18(%rbp)
  jmp    L84
L15:
  mov    -0x10(%rbp),%rax
  add    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  shr    $0x2,%rax
  and    $0x3,%eax
  mov    %rax,-0x8(%rbp)
  movq   $0x0,-0x20(%rbp)
  jmp    L106
L118:
  mov    -0x20(%rbp),%rax
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  mov    -0x38(%rbp),%rax
  shr    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shl    $0x2,%rax
  xor    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shr    $0x3,%rax
  mov    %rax,%rcx
  mov    -0x38(%rbp),%rax
  shl    $0x4,%rax
  xor    %rcx,%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x28(%rbp),%rax
  xor    -0x30(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  and    $0x3,%eax
  xor    -0x8(%rbp),%rax
  lea    0x0(,%rax,8),%rsi
  mov    -0x58(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%rax
  xor    -0x38(%rbp),%rax
  add    %rdx,%rax
  xor    %rcx,%rax
  lea    (%rdi,%rax,1),%rdx
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rcx
  mov    -0x48(%rbp),%rax
  add    %rcx,%rax
  mov    %rdx,(%rax)
  mov    (%rax),%rax
  mov    %rax,-0x38(%rbp)
  addq   $0x1,-0x20(%rbp)
L106:
  mov    -0x50(%rbp),%rax
  sub    $0x1,%rax
  cmp    %rax,-0x20(%rbp)
  jl     L118
  mov    -0x48(%rbp),%rax
  mov    (%rax),%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x50(%rbp),%rax
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  mov    -0x38(%rbp),%rax
  shr    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shl    $0x2,%rax
  xor    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shr    $0x3,%rax
  mov    %rax,%rcx
  mov    -0x38(%rbp),%rax
  shl    $0x4,%rax
  xor    %rcx,%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x28(%rbp),%rax
  xor    -0x30(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  and    $0x3,%eax
  xor    -0x8(%rbp),%rax
  lea    0x0(,%rax,8),%rsi
  mov    -0x58(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%rax
  xor    -0x38(%rbp),%rax
  add    %rdx,%rax
  xor    %rcx,%rax
  lea    (%rdi,%rax,1),%rdx
  mov    -0x50(%rbp),%rax
  shl    $0x3,%rax
  lea    -0x8(%rax),%rcx
  mov    -0x48(%rbp),%rax
  add    %rcx,%rax
  mov    %rdx,(%rax)
  mov    (%rax),%rax
  mov    %rax,-0x38(%rbp)
L84:
  mov    -0x18(%rbp),%rax
  lea    -0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  test   %rax,%rax
  jg     L15
  mov    $0x0,%eax
  jmp    L41
L36:
  cmpq   $0xffffffffffffffff,-0x50(%rbp)
  jge    L25
  negq   -0x50(%rbp)
  mov    $0x34,%eax
  cqto
  idivq  -0x50(%rbp)
  add    $0x6,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  mov    -0x10(%rbp),%rdx
  imul   %rdx,%rax
  mov    %rax,-0x28(%rbp)
  jmp    L105
L54:
  mov    -0x28(%rbp),%rax
  shr    $0x2,%rax
  and    $0x3,%eax
  mov    %rax,-0x8(%rbp)
  mov    -0x50(%rbp),%rax
  sub    $0x1,%rax
  mov    %rax,-0x20(%rbp)
  jmp    L6
L4:
  mov    -0x20(%rbp),%rax
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,%rcx
  mov    -0x38(%rbp),%rax
  shr    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shl    $0x2,%rax
  xor    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shr    $0x3,%rax
  mov    %rax,%rsi
  mov    -0x38(%rbp),%rax
  shl    $0x4,%rax
  xor    %rsi,%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x28(%rbp),%rax
  xor    -0x30(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  and    $0x3,%eax
  xor    -0x8(%rbp),%rax
  lea    0x0(,%rax,8),%rdi
  mov    -0x58(%rbp),%rax
  add    %rdi,%rax
  mov    (%rax),%rax
  xor    -0x38(%rbp),%rax
  add    %rdx,%rax
  xor    %rsi,%rax
  sub    %rax,%rcx
  mov    %rcx,%rdx
  mov    -0x20(%rbp),%rax
  lea    0x0(,%rax,8),%rcx
  mov    -0x48(%rbp),%rax
  add    %rcx,%rax
  mov    %rdx,(%rax)
  mov    (%rax),%rax
  mov    %rax,-0x30(%rbp)
  subq   $0x1,-0x20(%rbp)
L6:
  cmpq   $0x0,-0x20(%rbp)
  jg     L4
  mov    -0x50(%rbp),%rax
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x48(%rbp),%rax
  mov    (%rax),%rax
  mov    %rax,%rcx
  mov    -0x38(%rbp),%rax
  shr    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shl    $0x2,%rax
  xor    %rax,%rdx
  mov    -0x30(%rbp),%rax
  shr    $0x3,%rax
  mov    %rax,%rsi
  mov    -0x38(%rbp),%rax
  shl    $0x4,%rax
  xor    %rsi,%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x28(%rbp),%rax
  xor    -0x30(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  and    $0x3,%eax
  xor    -0x8(%rbp),%rax
  lea    0x0(,%rax,8),%rdi
  mov    -0x58(%rbp),%rax
  add    %rdi,%rax
  mov    (%rax),%rax
  xor    -0x38(%rbp),%rax
  add    %rdx,%rax
  xor    %rax,%rsi
  mov    %rsi,%rdx
  mov    %rcx,%rax
  sub    %rdx,%rax
  mov    %rax,%rdx
  mov    -0x48(%rbp),%rax
  mov    %rdx,(%rax)
  mov    -0x48(%rbp),%rax
  mov    (%rax),%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x10(%rbp),%rax
  sub    %rax,-0x28(%rbp)
L105:
  cmpq   $0x0,-0x28(%rbp)
  jne    L54
  mov    $0x0,%eax
  jmp    L41
L25:
  mov    $0x1,%eax
L41:
  pop    %rbp
  ret
```

assistant: ```c
long btea(long *v, long length, long *key) {
  unsigned long z, y = v[0], sum = 0, e, DELTA = 0x9e3779b9;
  long p, q;
  if (length > 1) {
    z = v[length - 1];
    q = 6 + 52 / length;
    while (q-- > 0) {
      sum += DELTA;
      e = (sum >> 2) & 3;
      for (p = 0; p < length - 1; p++)
        y = v[p + 1], z = v[p] += ((((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z)));
      y = v[0];
      z = v[length - 1] += ((((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z)));
    }
    return 0;
  } else if (length < -1) {
    length = -length;
    q = 6 + 52 / length;
    sum = q * DELTA;
    while (sum != 0) {
      e = (sum >> 2) & 3;
      for (p = length - 1; p > 0; p--)
        z = v[p - 1], y = v[p] -= ((((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z)));
      z = v[length - 1];
      y = v[0] -= ((((z >> 5) ^ (y << 2)) + ((y >> 3) ^ (z << 4))) ^ ((sum ^ y) + (key[(p & 3) ^ e] ^ z)));
      sum -= DELTA;
    }
    return 0;
  }
  return 1;
}
```