user: 这段汇编代码用C语言表示是什么样的：

```asm
<dwt_decode_1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  mov    -0x1c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,-0x8(%rbp)
  mov    -0x1c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  add    $0x1,%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x20(%rbp),%edx
  mov    -0x1c(%rbp),%ecx
  mov    -0x18(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <dwt_interleave@plt>
  movl   $0x0,-0xc(%rbp)
  jmp    L166
L99:
  mov    -0x20(%rbp),%eax
  imul   -0xc(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  cmpl   $0x0,-0xc(%rbp)
  jg     L146
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L93
L146:
  mov    -0xc(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jle    L104
  mov    -0x8(%rbp),%eax
  sub    $0x1,%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L93
L104:
  mov    -0xc(%rbp),%eax
  sub    $0x1,%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
L93:
  cmpl   $0x0,-0xc(%rbp)
  jns    L84
  mov    -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%eax
  jmp    L133
L84:
  mov    -0xc(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jl     L51
  mov    -0x8(%rbp),%eax
  sub    $0x1,%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%eax
  jmp    L133
L51:
  mov    -0xc(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%eax
L133:
  add    %edx,%eax
  add    $0x2,%eax
  sar    $0x2,%eax
  mov    %eax,%esi
  mov    -0x20(%rbp),%eax
  imul   -0xc(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  sub    %esi,%ecx
  mov    %ecx,%edx
  mov    %edx,(%rax)
  addl   $0x1,-0xc(%rbp)
L166:
  mov    -0xc(%rbp),%eax
  cmp    -0x4(%rbp),%eax
  jl     L99
  movl   $0x0,-0xc(%rbp)
  jmp    L118
L107:
  mov    -0xc(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  cmpl   $0x0,-0xc(%rbp)
  jns    L65
  mov    -0x18(%rbp),%rax
  mov    (%rax),%edx
  jmp    L13
L65:
  mov    -0xc(%rbp),%eax
  cmp    -0x4(%rbp),%eax
  jl     L90
  mov    -0x4(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x20(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L13
L90:
  mov    -0x20(%rbp),%eax
  imul   -0xc(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
L13:
  cmpl   $0xffffffff,-0xc(%rbp)
  jge    L183
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  jmp    L58
L183:
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x4(%rbp)
  jg     L123
  mov    -0x4(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x20(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%eax
  jmp    L58
L123:
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  mov    (%rax),%eax
L58:
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rsi
  mov    -0x18(%rbp),%rax
  add    %rsi,%rax
  add    %ecx,%edx
  mov    %edx,(%rax)
  addl   $0x1,-0xc(%rbp)
L118:
  mov    -0xc(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jl     L107
  nop
  nop
  leave
  ret
```

assistant: ```c
void dwt_decode_1(int *a, int n, int x) {
  int dn, sn, i;
  dn = n / 2;
  sn = 1 + (n - 1) / 2;
  dwt_interleave(a, n, x);
  for (i = 0; i < sn; i++)
    a[x * (i)*2] -= (((i - 1) < 0 ? a[x * (1 + (0) * 2)] : ((i - 1) >= dn ? a[x * (1 + (dn - 1) * 2)] : a[x * (1 + (i - 1) * 2)])) + ((i) < 0 ? a[x * (1 + (0) * 2)] : ((i) >= dn ? a[x * (1 + (dn - 1) * 2)] : a[x * (1 + (i)*2)])) + 2) >> 2;
  for (i = 0; i < dn; i++)
    a[x * (1 + (i)*2)] += (((i) < 0 ? a[x * (0) * 2] : ((i) >= sn ? a[x * (sn - 1) * 2] : a[x * (i)*2])) + ((i + 1) < 0 ? a[x * (0) * 2] : ((i + 1) >= sn ? a[x * (sn - 1) * 2] : a[x * (i + 1) * 2]))) >> 1;
}
```