user: 下面的汇编指令对应的C源代码是什么:

```asm
<cftbsub>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %edi,%r12d
  mov    %rsi,%rbx
  mov    %rdx,%r13
  mov    $0x2,%ebp
  cmp    $0x10,%edi
  jg     L163
L20:
  lea    0x0(,%rbp,4),%eax
  cmp    %r12d,%eax
  jl     L142
  je     L21
L1:
  test   %ebp,%ebp
  jle    L95
  movslq %ebp,%rax
  lea    (%rbx,%rax,8),%rdx
  lea    0x8(%rbx),%rax
  sub    $0x1,%ebp
  shr    %ebp
  mov    %ebp,%ebp
  shl    $0x4,%rbp
  lea    0x18(%rbx,%rbp,1),%rcx
  movq   D2(%rip),%xmm5
L87:
  movsd  -0x8(%rax),%xmm1
  movsd  (%rdx),%xmm3
  movsd  (%rax),%xmm0
  movsd  0x8(%rdx),%xmm2
  subsd  %xmm0,%xmm2
  movapd %xmm1,%xmm4
  addsd  %xmm3,%xmm4
  movsd  %xmm4,-0x8(%rax)
  xorpd  %xmm5,%xmm0
  subsd  0x8(%rdx),%xmm0
  movsd  %xmm0,(%rax)
  subsd  %xmm3,%xmm1
  movsd  %xmm1,(%rdx)
  movsd  %xmm2,0x8(%rdx)
  add    $0x10,%rdx
  add    $0x10,%rax
  cmp    %rcx,%rax
  jne    L87
  jmp    L95
L163:
  mov    $0x0,%eax
  call   <cft1st@plt>
  cmp    $0x80,%r12d
  jle    L71
  mov    $0x10,%esi
  mov    $0x80,%ebp
  jmp    L37
L23:
  mov    %eax,%ebp
L37:
  mov    %r13,%rcx
  mov    %rbx,%rdx
  mov    %r12d,%edi
  mov    $0x0,%eax
  call   <cftmdl@plt>
  lea    0x0(,%rbp,8),%eax
  mov    %ebp,%esi
  cmp    %r12d,%eax
  jl     L23
  lea    0x0(,%rbp,4),%eax
  cmp    %r12d,%eax
  jge    L28
  test   %ebp,%ebp
  jle    L95
  movsd  0x10(%r13),%xmm3
  jmp    L59
L28:
  jne    L1
  test   %ebp,%ebp
  jle    L95
L21:
  mov    %rbx,%rax
  movslq %ebp,%rdi
  shl    $0x3,%rdi
  lea    (%rbx,%rdi,1),%rdx
  mov    %rdx,%rsi
  add    %rdi,%rdx
  mov    %rdx,%rcx
  add    %rdi,%rdx
  lea    -0x1(%rbp),%edi
  shr    %edi
  mov    %edi,%edi
  shl    $0x4,%rdi
  lea    0x10(%rbx,%rdi,1),%rdi
  movq   D2(%rip),%xmm10
L57:
  movsd  (%rax),%xmm4
  movsd  (%rsi),%xmm0
  movapd %xmm4,%xmm5
  addsd  %xmm0,%xmm5
  movsd  0x8(%rax),%xmm6
  movsd  0x8(%rsi),%xmm3
  movapd %xmm6,%xmm2
  xorpd  %xmm10,%xmm2
  subsd  %xmm3,%xmm2
  subsd  %xmm0,%xmm4
  subsd  %xmm6,%xmm3
  movsd  (%rcx),%xmm0
  movsd  (%rdx),%xmm9
  movapd %xmm0,%xmm7
  addsd  %xmm9,%xmm7
  movsd  0x8(%rcx),%xmm1
  movsd  0x8(%rdx),%xmm8
  movapd %xmm1,%xmm6
  addsd  %xmm8,%xmm6
  subsd  %xmm9,%xmm0
  subsd  %xmm8,%xmm1
  movapd %xmm5,%xmm8
  addsd  %xmm7,%xmm8
  movsd  %xmm8,(%rax)
  movapd %xmm2,%xmm8
  subsd  %xmm6,%xmm8
  movsd  %xmm8,0x8(%rax)
  subsd  %xmm7,%xmm5
  movsd  %xmm5,(%rcx)
  addsd  %xmm6,%xmm2
  movsd  %xmm2,0x8(%rcx)
  movapd %xmm4,%xmm2
  subsd  %xmm1,%xmm2
  movsd  %xmm2,(%rsi)
  movapd %xmm3,%xmm2
  subsd  %xmm0,%xmm2
  movsd  %xmm2,0x8(%rsi)
  addsd  %xmm4,%xmm1
  movsd  %xmm1,(%rdx)
  addsd  %xmm3,%xmm0
  movsd  %xmm0,0x8(%rdx)
  add    $0x10,%rax
  add    $0x10,%rsi
  add    $0x10,%rcx
  add    $0x10,%rdx
  cmp    %rdi,%rax
  jne    L57
  jmp    L95
L142:
  movsd  0x10(%r13),%xmm3
L59:
  movslq %ebp,%rcx
  lea    0x0(,%rcx,8),%rdx
  lea    (%rbx,%rdx,1),%rax
  mov    %rax,%r10
  shl    $0x4,%rcx
  add    %rcx,%rax
  mov    %rax,%r9
  add    %rdx,%rax
  mov    %rax,%r8
  add    %rdx,%rax
  mov    %rax,%rdi
  add    %rdx,%rax
  mov    %rax,%rsi
  add    %rdx,%rax
  lea    0x0(%rbp,%rbp,1),%edx
  movslq %edx,%rdx
  lea    0x8(%rbx,%rdx,8),%rcx
  mov    $0x0,%edx
  movapd %xmm3,%xmm15
L153:
  movsd  (%rbx,%rdx,8),%xmm13
  movsd  (%r10),%xmm4
  movapd %xmm13,%xmm5
  addsd  %xmm4,%xmm5
  movsd  0x8(%rbx,%rdx,8),%xmm0
  movsd  0x8(%r10),%xmm1
  movapd %xmm0,%xmm3
  xorpd  D2(%rip),%xmm3
  subsd  %xmm1,%xmm3
  subsd  %xmm4,%xmm13
  subsd  %xmm0,%xmm1
  movsd  -0x8(%rcx),%xmm0
  movsd  (%r9),%xmm8
  movapd %xmm0,%xmm6
  addsd  %xmm8,%xmm6
  movsd  (%rcx),%xmm2
  movsd  0x8(%r9),%xmm7
  movapd %xmm2,%xmm4
  addsd  %xmm7,%xmm4
  subsd  %xmm8,%xmm0
  subsd  %xmm7,%xmm2
  movapd %xmm5,%xmm9
  addsd  %xmm6,%xmm9
  movapd %xmm3,%xmm7
  subsd  %xmm4,%xmm7
  movsd  %xmm7,(%rsp)
  subsd  %xmm6,%xmm5
  movsd  %xmm5,0x8(%rsp)
  addsd  %xmm4,%xmm3
  movapd %xmm13,%xmm11
  subsd  %xmm2,%xmm11
  movapd %xmm1,%xmm4
  subsd  %xmm0,%xmm4
  movsd  %xmm4,0x10(%rsp)
  addsd  %xmm2,%xmm13
  addsd  %xmm0,%xmm1
  movsd  (%r8),%xmm0
  movsd  (%rdi),%xmm7
  movapd %xmm0,%xmm12
  addsd  %xmm7,%xmm12
  movsd  0x8(%r8),%xmm4
  movsd  0x8(%rdi),%xmm6
  movapd %xmm4,%xmm5
  addsd  %xmm6,%xmm5
  subsd  %xmm7,%xmm0
  subsd  %xmm6,%xmm4
  movsd  (%rsi),%xmm6
  movsd  (%rax),%xmm14
  movapd %xmm6,%xmm10
  addsd  %xmm14,%xmm10
  movsd  0x8(%rsi),%xmm2
  movsd  0x8(%rax),%xmm8
  movapd %xmm2,%xmm7
  addsd  %xmm8,%xmm7
  subsd  %xmm14,%xmm6
  subsd  %xmm8,%xmm2
  movapd %xmm12,%xmm14
  addsd  %xmm10,%xmm14
  movsd  %xmm14,0x18(%rsp)
  movapd %xmm5,%xmm8
  addsd  %xmm7,%xmm8
  subsd  %xmm10,%xmm12
  movapd %xmm12,%xmm14
  subsd  %xmm7,%xmm5
  movapd %xmm0,%xmm12
  subsd  %xmm2,%xmm12
  movapd %xmm4,%xmm7
  addsd  %xmm6,%xmm7
  addsd  %xmm2,%xmm0
  subsd  %xmm6,%xmm4
  movapd %xmm12,%xmm6
  subsd  %xmm7,%xmm6
  mulsd  %xmm15,%xmm6
  addsd  %xmm7,%xmm12
  movapd %xmm12,%xmm10
  mulsd  %xmm15,%xmm10
  movapd %xmm0,%xmm7
  subsd  %xmm4,%xmm7
  mulsd  %xmm15,%xmm7
  addsd  %xmm4,%xmm0
  mulsd  %xmm15,%xmm0
  movapd %xmm11,%xmm4
  addsd  %xmm6,%xmm4
  movsd  %xmm4,(%r10)
  movsd  0x10(%rsp),%xmm2
  movapd %xmm2,%xmm4
  subsd  %xmm10,%xmm4
  movsd  %xmm4,0x8(%r10)
  subsd  %xmm6,%xmm11
  movsd  %xmm11,(%rdi)
  addsd  %xmm2,%xmm10
  movsd  %xmm10,0x8(%rdi)
  movapd %xmm13,%xmm4
  subsd  %xmm0,%xmm4
  movsd  %xmm4,(%r9)
  movapd %xmm1,%xmm4
  subsd  %xmm7,%xmm4
  movsd  %xmm4,0x8(%r9)
  addsd  %xmm0,%xmm13
  movsd  %xmm13,(%rax)
  addsd  %xmm7,%xmm1
  movsd  %xmm1,0x8(%rax)
  movsd  0x18(%rsp),%xmm2
  movapd %xmm2,%xmm0
  addsd  %xmm9,%xmm0
  movsd  %xmm0,(%rbx,%rdx,8)
  movsd  (%rsp),%xmm1
  movapd %xmm1,%xmm0
  subsd  %xmm8,%xmm0
  movsd  %xmm0,0x8(%rbx,%rdx,8)
  subsd  %xmm2,%xmm9
  movsd  %xmm9,(%r8)
  addsd  %xmm1,%xmm8
  movsd  %xmm8,0x8(%r8)
  movsd  0x8(%rsp),%xmm6
  movapd %xmm6,%xmm0
  subsd  %xmm5,%xmm0
  movsd  %xmm0,-0x8(%rcx)
  movapd %xmm3,%xmm0
  subsd  %xmm14,%xmm0
  movsd  %xmm0,(%rcx)
  addsd  %xmm6,%xmm5
  movsd  %xmm5,(%rsi)
  addsd  %xmm14,%xmm3
  movsd  %xmm3,0x8(%rsi)
  add    $0x2,%rdx
  add    $0x10,%r10
  add    $0x10,%r9
  add    $0x10,%r8
  add    $0x10,%rdi
  add    $0x10,%rsi
  add    $0x10,%rax
  add    $0x10,%rcx
  cmp    %edx,%ebp
  jg     L153
L95:
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L71:
  mov    $0x10,%ebp
  jmp    L20
```

tool_calls: name: parse_data
arguments: data_label: D2
datatype: byte[16]

tool: {"D2": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]}

assistant: ```c
void cftbsub(int n, double *a, double *w) {
  int j, j1, j2, j3, j4, j5, j6, j7, l;
  double wn4r, x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i, y0r, y0i, y1r, y1i, y2r, y2i, y3r, y3i, y4r, y4i, y5r, y5i, y6r, y6i, y7r, y7i;
  l = 2;
  if (n > 16) {
    cft1st(n, a, w);
    l = 16;
    while ((l << 3) < n) {
      cftmdl(n, l, a, w);
      l <<= 3;
    }
  }
  if ((l << 2) < n) {
    wn4r = w[2];
    for (j = 0; j < l; j += 2) {
      j1 = j + l;
      j2 = j1 + l;
      j3 = j2 + l;
      j4 = j3 + l;
      j5 = j4 + l;
      j6 = j5 + l;
      j7 = j6 + l;
      x0r = a[j] + a[j1];
      x0i = -a[j + 1] - a[j1 + 1];
      x1r = a[j] - a[j1];
      x1i = -a[j + 1] + a[j1 + 1];
      x2r = a[j2] + a[j3];
      x2i = a[j2 + 1] + a[j3 + 1];
      x3r = a[j2] - a[j3];
      x3i = a[j2 + 1] - a[j3 + 1];
      y0r = x0r + x2r;
      y0i = x0i - x2i;
      y2r = x0r - x2r;
      y2i = x0i + x2i;
      y1r = x1r - x3i;
      y1i = x1i - x3r;
      y3r = x1r + x3i;
      y3i = x1i + x3r;
      x0r = a[j4] + a[j5];
      x0i = a[j4 + 1] + a[j5 + 1];
      x1r = a[j4] - a[j5];
      x1i = a[j4 + 1] - a[j5 + 1];
      x2r = a[j6] + a[j7];
      x2i = a[j6 + 1] + a[j7 + 1];
      x3r = a[j6] - a[j7];
      x3i = a[j6 + 1] - a[j7 + 1];
      y4r = x0r + x2r;
      y4i = x0i + x2i;
      y6r = x0r - x2r;
      y6i = x0i - x2i;
      x0r = x1r - x3i;
      x0i = x1i + x3r;
      x2r = x1r + x3i;
      x2i = x1i - x3r;
      y5r = wn4r * (x0r - x0i);
      y5i = wn4r * (x0r + x0i);
      y7r = wn4r * (x2r - x2i);
      y7i = wn4r * (x2r + x2i);
      a[j1] = y1r + y5r;
      a[j1 + 1] = y1i - y5i;
      a[j5] = y1r - y5r;
      a[j5 + 1] = y1i + y5i;
      a[j3] = y3r - y7i;
      a[j3 + 1] = y3i - y7r;
      a[j7] = y3r + y7i;
      a[j7 + 1] = y3i + y7r;
      a[j] = y0r + y4r;
      a[j + 1] = y0i - y4i;
      a[j4] = y0r - y4r;
      a[j4 + 1] = y0i + y4i;
      a[j2] = y2r - y6i;
      a[j2 + 1] = y2i - y6r;
      a[j6] = y2r + y6i;
      a[j6 + 1] = y2i + y6r;
    }
  } else if ((l << 2) == n) {
    for (j = 0; j < l; j += 2) {
      j1 = j + l;
      j2 = j1 + l;
      j3 = j2 + l;
      x0r = a[j] + a[j1];
      x0i = -a[j + 1] - a[j1 + 1];
      x1r = a[j] - a[j1];
      x1i = -a[j + 1] + a[j1 + 1];
      x2r = a[j2] + a[j3];
      x2i = a[j2 + 1] + a[j3 + 1];
      x3r = a[j2] - a[j3];
      x3i = a[j2 + 1] - a[j3 + 1];
      a[j] = x0r + x2r;
      a[j + 1] = x0i - x2i;
      a[j2] = x0r - x2r;
      a[j2 + 1] = x0i + x2i;
      a[j1] = x1r - x3i;
      a[j1 + 1] = x1i - x3r;
      a[j3] = x1r + x3i;
      a[j3 + 1] = x1i + x3r;
    }
  } else {
    for (j = 0; j < l; j += 2) {
      j1 = j + l;
      x0r = a[j] - a[j1];
      x0i = -a[j + 1] + a[j1 + 1];
      a[j] += a[j1];
      a[j + 1] = -a[j + 1] - a[j1 + 1];
      a[j1] = x0r;
      a[j1 + 1] = x0i;
    }
  }
}
```