user: 这段汇编代码用C语言表示是什么样的：

```asm
<pjpeg_idct_2D_double>:
  endbr64
  push   %r15
  mov    %rdi,%r8
  mov    $0x40,%ecx
  push   %r14
  push   %r13
  mov    %edx,%r13d
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x628,%rsp
  mov    %rsi,0x8(%rsp)
  lea    0x10(%rsp),%rbx
  mov    %r8,%rsi
  lea    0x410(%rsp),%r14
  mov    %rbx,%rdi
  lea    0x210(%rsp),%r12
  mov    %r14,%r15
  mov    %fs:0x28,%rax
  mov    %rax,0x618(%rsp)
  xor    %eax,%eax
  rep movsq %ds:(%rsi),%es:(%rdi)
  nopl   0x0(%rax)
L32:
  mov    %r15,%rdx
  mov    %rbx,%rdi
  mov    $0x1,%ecx
  mov    $0x1,%esi
  call   <idct_1D_double@plt>
  add    $0x40,%rbx
  add    $0x40,%r15
  cmp    %r12,%rbx
  jne    L32
  mov    %r12,%rbx
  lea    0x40(%r14),%r15
  mov    %r12,%rbp
  nopl   0x0(%rax)
L20:
  mov    %rbp,%rdx
  mov    %r14,%rdi
  mov    $0x8,%ecx
  mov    $0x8,%esi
  call   <idct_1D_double@plt>
  add    $0x8,%r14
  add    $0x8,%rbp
  cmp    %r14,%r15
  jne    L20
  movslq %r13d,%rdx
  mov    0x8(%rsp),%rax
  movapd D14(%rip),%xmm8
  add    $0x200,%r12
  movapd D20(%rip),%xmm7
  movapd D10(%rip),%xmm0
  shl    $0x3,%rdx
  pxor   %xmm6,%xmm6
  nopw   0x0(%rax,%rax,1)
L33:
  movapd (%rbx),%xmm2
  movapd 0x10(%rbx),%xmm1
  movapd %xmm0,%xmm9
  add    $0x40,%rbx
  movapd -0x20(%rbx),%xmm5
  movapd -0x10(%rbx),%xmm4
  mulpd  %xmm8,%xmm2
  mulpd  %xmm8,%xmm1
  mulpd  %xmm8,%xmm5
  mulpd  %xmm8,%xmm4
  addpd  %xmm7,%xmm2
  addpd  %xmm7,%xmm1
  addpd  %xmm7,%xmm5
  movapd %xmm2,%xmm3
  addpd  %xmm7,%xmm4
  cmpltpd %xmm6,%xmm3
  andnpd %xmm2,%xmm3
  movapd %xmm1,%xmm2
  cmpltpd %xmm6,%xmm2
  andnpd %xmm1,%xmm2
  movapd %xmm5,%xmm1
  cmpltpd %xmm6,%xmm1
  andnpd %xmm5,%xmm1
  movapd %xmm4,%xmm5
  cmpltpd %xmm6,%xmm5
  andnpd %xmm4,%xmm5
  movapd %xmm0,%xmm4
  cmpltpd %xmm3,%xmm4
  andpd  %xmm4,%xmm9
  andnpd %xmm3,%xmm4
  movapd %xmm0,%xmm3
  cmpltpd %xmm2,%xmm3
  orpd   %xmm9,%xmm4
  movapd %xmm0,%xmm9
  movaps %xmm4,-0x40(%rbx)
  andpd  %xmm3,%xmm9
  andnpd %xmm2,%xmm3
  movapd %xmm0,%xmm2
  cmpltpd %xmm1,%xmm2
  orpd   %xmm9,%xmm3
  movapd %xmm0,%xmm9
  movaps %xmm3,-0x30(%rbx)
  andpd  %xmm2,%xmm9
  andnpd %xmm1,%xmm2
  movapd %xmm0,%xmm1
  cmpltpd %xmm5,%xmm1
  orpd   %xmm9,%xmm2
  movapd %xmm0,%xmm9
  movaps %xmm2,-0x20(%rbx)
  andpd  %xmm1,%xmm9
  andnpd %xmm5,%xmm1
  orpd   %xmm9,%xmm1
  movaps %xmm1,-0x10(%rbx)
  movups %xmm4,(%rax)
  movups %xmm3,0x10(%rax)
  movups %xmm2,0x20(%rax)
  movups %xmm1,0x30(%rax)
  add    %rdx,%rax
  cmp    %rbx,%r12
  jne    L33
  mov    0x618(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L38
  add    $0x628,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L38:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: label: D14
datatype: byte[16]
name: extract_symbolic_data
arguments: label: D20
datatype: byte[16]
name: extract_symbolic_data
arguments: label: D10
datatype: byte[16]

tool: {"D14": [0x00,0x00,0x00,0x00,0x00,0x00,0xd0,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0xd0,0x3f]}

tool: {"D20": [0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x40]}

tool: {"D10": [0x00,0x00,0x00,0x00,0x00,0xe0,0x6f,0x40,0x00,0x00,0x00,0x00,0x00,0xe0,0x6f,0x40]}

assistant: ```c
void pjpeg_idct_2D_double(int32_t in[64], uint8_t *out, uint32_t outstride) {
  double din[64], dout[64];
  for (int i = 0; i < 64; i++)
    din[i] = in[i];
  double tmp[64];
  for (int y = 0; y < 8; y++)
    idct_1D_double(&din[8 * y], 1, &tmp[8 * y], 1);
  for (int x = 0; x < 8; x++)
    idct_1D_double(&tmp[x], 8, &dout[x], 8);
  for (int y = 0; y < 8; y++) {
    for (int x = 0; x < 8; x++) {
      int i = 8 * y + x;
      dout[i] = (dout[i] / 4) + 128;
      if (dout[i] < 0)
        dout[i] = 0;
      if (dout[i] > 255)
        dout[i] = 255;
      out[y * outstride + x] = dout[i];
    }
  }
}
```