user: 下面的汇编指令对应的C源代码是什么:

```asm
<wave_up>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    %ecx,-0x2c(%rbp)
  mov    %r8,-0x38(%rbp)
  movl   $0x1,-0x8(%rbp)
  jmp    L13
L59:
  movl   $0x0,-0x4(%rbp)
  jmp    L23
L12:
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  mov    %rax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  cltq
  movss  (%rdx,%rax,4),%xmm1
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  cltq
  movss  (%rdx,%rax,4),%xmm0
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  lea    -0x50(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  add    %eax,%eax
  addss  %xmm1,%xmm0
  cltq
  movss  %xmm0,(%rdx,%rax,4)
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  mov    %rax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  cltq
  movss  (%rdx,%rax,4),%xmm0
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  mov    %rax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  cltq
  movss  (%rdx,%rax,4),%xmm1
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  lea    -0x50(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  subss  %xmm1,%xmm0
  cltq
  movss  %xmm0,(%rdx,%rax,4)
  addl   $0x1,-0x4(%rbp)
L23:
  mov    -0x4(%rbp),%eax
  cmp    -0x8(%rbp),%eax
  jl     L12
  shll   -0x8(%rbp)
  mov    -0x38(%rbp),%rax
  mov    (%rax),%eax
  lea    -0x1(%rax),%edx
  mov    -0x38(%rbp),%rax
  mov    %edx,(%rax)
L13:
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    %eax,-0x8(%rbp)
  jne    L59
  movl   $0x0,-0x4(%rbp)
  jmp    L27
L6:
  mov    -0x18(%rbp),%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  movss  (%rax,%rdx,4),%xmm1
  mov    -0x20(%rbp),%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  movss  (%rax,%rdx,4),%xmm0
  mov    -0x4(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addss  %xmm1,%xmm0
  movss  %xmm0,(%rax)
  mov    -0x18(%rbp),%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  movss  (%rax,%rdx,4),%xmm0
  mov    -0x20(%rbp),%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  movss  (%rax,%rdx,4),%xmm1
  mov    -0x4(%rbp),%eax
  add    %eax,%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  subss  %xmm1,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x4(%rbp)
L27:
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    %eax,-0x4(%rbp)
  jl     L6
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void wave_up(float S[40][20], float d[40][20], float *S_out, int old_size, int *index) {
  int new_size = 1;
  int i;
  while (new_size != old_size / 2) {
    for (i = 0; i < new_size; ++i) {
      S[*index - 1][2 * i] = S[*index][i] + d[*index][i];
      S[*index - 1][(2 * i) + 1] = S[*index][i] - d[*index][i];
    }
    new_size = new_size * 2;
    *index = *index - 1;
  }
  for (i = 0; i < (old_size / 2); ++i) {
    S_out[2 * i] = S[0][i] + d[0][i];
    S_out[(2 * i) + 1] = S[0][i] - d[0][i];
  }
}
```