user: 这段汇编代码用C语言表示是什么样的:

```asm
<flip_E6>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  shl    $0x9,%rax
  and    -0x30(%rbp),%rax
  and    $0x400,%eax
  mov    %rax,-0x20(%rbp)
  mov    -0x28(%rbp),%rax
  shl    $0x8,%rax
  and    -0x30(%rbp),%rax
  and    $0x800,%eax
  or     %rax,-0x20(%rbp)
  mov    -0x28(%rbp),%rax
  shl    $0x7,%rax
  and    -0x30(%rbp),%rax
  and    $0x1000,%eax
  or     %rax,-0x20(%rbp)
  mov    -0x28(%rbp),%rax
  and    $0x30000,%eax
  mov    %rax,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  and    $0x80000,%eax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L4
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <last_bit@plt>
  mov    $0x2,%edx
  mov    %eax,%ecx
  shl    %cl,%rdx
  mov    $0x80000,%eax
  sub    %rdx,%rax
  or     %rax,-0x20(%rbp)
L4:
  movabs $0x10200000000,%rax
  and    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  movabs $0x204000000,%rax
  and    -0x30(%rbp),%rax
  movabs $0xfdf8000000,%rdx
  or     %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  add    $0x4000000,%rax
  and    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L37
  mov    -0x10(%rbp),%rax
  lea    -0x1(%rax),%rdx
  movabs $0x204000000,%rax
  and    %rdx,%rax
  or     %rax,-0x20(%rbp)
L37:
  movabs $0x808080800000000,%rax
  and    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  movabs $0x8080808000000,%rax
  and    -0x30(%rbp),%rax
  movabs $0x7f7f7f7f0000000,%rdx
  or     %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  add    $0x8000000,%rax
  and    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L39
  mov    -0x10(%rbp),%rax
  lea    -0x1(%rax),%rdx
  movabs $0x8080808000000,%rax
  and    %rdx,%rax
  or     %rax,-0x20(%rbp)
L39:
  movabs $0x80402000000000,%rax
  and    -0x28(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  movabs $0x402010000000,%rax
  and    -0x30(%rbp),%rax
  movabs $0x7fbfdfe0000000,%rdx
  or     %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  add    $0x10000000,%rax
  and    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L20
  mov    -0x10(%rbp),%rax
  lea    -0x1(%rax),%rdx
  movabs $0x402010000000,%rax
  and    %rdx,%rax
  or     %rax,-0x20(%rbp)
L20:
  mov    -0x28(%rbp),%rax
  and    $0xe00000,%eax
  mov    %rax,-0x18(%rbp)
  mov    -0x30(%rbp),%rax
  add    $0x100000,%rax
  and    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L40
  mov    -0x10(%rbp),%rax
  sub    $0x1,%rax
  and    $0xf00000,%eax
  or     %rax,-0x20(%rbp)
L40:
  mov    -0x20(%rbp),%rax
  leave
  ret
```

assistant: ```c
unsigned long long flip_E6(const unsigned long long discs_player, const unsigned long long discs_opponent) {
  unsigned long long my_discs, opp_discs, r;
  unsigned long long flipped = (discs_opponent & 0X0000000000000400ULL) & (discs_player << 9);
  flipped |= (discs_opponent & 0X0000000000000800ULL) & (discs_player << 8);
  flipped |= (discs_opponent & 0X0000000000001000ULL) & (discs_player << 7);
  my_discs = discs_player & 0X0000000000030000ULL;
  r = ((my_discs << 1) + discs_opponent) & 0X0000000000080000ULL;
  if (r != 0) {
    flipped |= 0X0000000000080000ULL - (0X2ULL << last_bit(my_discs));
  }
  my_discs = discs_player & 0X0000010200000000ULL;
  opp_discs = (discs_opponent & 0X0000000204000000ULL) | 0X000000FDF8000000ULL;
  r = (opp_discs + 0X0000000004000000ULL) & my_discs;
  if (r != 0) {
    flipped |= (r - 1) & 0X0000000204000000ULL;
  }
  my_discs = discs_player & 0X0808080800000000ULL;
  opp_discs = (discs_opponent & 0X0008080808000000ULL) | 0X07F7F7F7F0000000ULL;
  r = (opp_discs + 0X0000000008000000ULL) & my_discs;
  if (r != 0) {
    flipped |= (r - 1) & 0X0008080808000000ULL;
  }
  my_discs = discs_player & 0X0080402000000000ULL;
  opp_discs = (discs_opponent & 0X0000402010000000ULL) | 0X007FBFDFE0000000ULL;
  r = (opp_discs + 0X0000000010000000ULL) & my_discs;
  if (r != 0) {
    flipped |= (r - 1) & 0X0000402010000000ULL;
  }
  my_discs = discs_player & 0X0000000000E00000ULL;
  r = (discs_opponent + 0X0000000000100000ULL) & my_discs;
  if (r != 0) {
    flipped |= (r - 1) & 0X0000000000F00000ULL;
  }
  return flipped;
}
```