user: 请将以下的汇编代码转换成C语言代码:

```asm
<FFT>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,(%rsp)
  mov    %rsi,0x20(%rsp)
  mov    %edx,%r12d
  mov    %ecx,%r14d
  mov    $0x1,%r15d
  jmp    L86
L63:
  add    $0x1,%r15d
L86:
  mov    %r15d,%esi
  mov    $0x2,%edi
  call   <pow@plt>
  cmp    %eax,%r12d
  jg     L63
  mov    %r15d,%esi
  mov    $0x2,%edi
  call   <pow@plt>
  cmp    %eax,%r12d
  jne    L212
L398:
  lea    0x0(,%r12,8),%ebx
  mov    %ebx,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    %ebx,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  test   %r12d,%r12d
  jle    L27
  mov    %r12d,%eax
  mov    $0x0,%r13d
  mov    %r15d,0x2c(%rsp)
  mov    (%rsp),%r15
  mov    %r12d,(%rsp)
  mov    %rax,%r12
  jmp    L118
L212:
  sub    $0x1,%r15d
  mov    %r15d,%esi
  mov    $0x2,%edi
  call   <pow@plt>
  mov    %eax,%r12d
  jmp    L398
L112:
  cmp    $0x3,%r14d
  jne    L12
  movzwl (%r15,%r13,2),%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movsd  %xmm0,0x0(%rbp,%r13,8)
  jmp    L371
L321:
  pxor   %xmm0,%xmm0
  cvtsi2sd %r13d,%xmm0
  mulsd  D94(%rip),%xmm0
  pxor   %xmm1,%xmm1
  cvtsi2sdl (%rsp),%xmm1
  divsd  %xmm1,%xmm0
  call   <cos@plt>
  movapd %xmm0,%xmm2
  movzwl (%r15,%r13,2),%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  movsd  D163(%rip),%xmm0
  mulsd  %xmm0,%xmm2
  subsd  %xmm2,%xmm0
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%rbp,%r13,8)
L371:
  add    $0x1,%r13
  cmp    %r12,%r13
  je     L340
L118:
  mov    %r13d,%eax
  movq   $0x0,(%rbx,%r13,8)
  cmp    $0x2,%r14d
  je     L110
  jg     L112
  test   %r14d,%r14d
  je     L321
  cmp    $0x1,%r14d
  jne    L12
  pxor   %xmm0,%xmm0
  cvtsi2sd %r13d,%xmm0
  mulsd  D94(%rip),%xmm0
  pxor   %xmm1,%xmm1
  cvtsi2sdl (%rsp),%xmm1
  divsd  %xmm1,%xmm0
  call   <cos@plt>
  movapd %xmm0,%xmm2
  movzwl (%r15,%r13,2),%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  mulsd  D2(%rip),%xmm2
  movsd  D209(%rip),%xmm1
  subsd  %xmm2,%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%rbp,%r13,8)
  jmp    L371
L110:
  pxor   %xmm0,%xmm0
  cvtsi2sd %r13d,%xmm0
  pxor   %xmm1,%xmm1
  cvtsi2sdl (%rsp),%xmm1
  movsd  %xmm0,0x8(%rsp)
  mulsd  D94(%rip),%xmm0
  movsd  %xmm1,0x10(%rsp)
  divsd  %xmm1,%xmm0
  call   <cos@plt>
  movsd  %xmm0,0x18(%rsp)
  movsd  0x8(%rsp),%xmm0
  mulsd  D96(%rip),%xmm0
  divsd  0x10(%rsp),%xmm0
  call   <cos@plt>
  movapd %xmm0,%xmm1
  movsd  0x18(%rsp),%xmm2
  mulsd  D95(%rip),%xmm2
  movsd  D28(%rip),%xmm0
  subsd  %xmm2,%xmm0
  mulsd  D178(%rip),%xmm1
  addsd  %xmm1,%xmm0
  mulsd  D110(%rip),%xmm0
  movzwl (%r15,%r13,2),%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%rbp,%r13,8)
  jmp    L371
L12:
  pxor   %xmm6,%xmm6
  cvtsi2sd %eax,%xmm6
  pxor   %xmm1,%xmm1
  cvtsi2sdl (%rsp),%xmm1
  movsd  %xmm6,0x8(%rsp)
  movapd %xmm6,%xmm0
  mulsd  D94(%rip),%xmm0
  movsd  %xmm1,0x10(%rsp)
  divsd  %xmm1,%xmm0
  call   <cos@plt>
  movsd  %xmm0,0x18(%rsp)
  movsd  0x8(%rsp),%xmm0
  mulsd  D96(%rip),%xmm0
  divsd  0x10(%rsp),%xmm0
  call   <cos@plt>
  movapd %xmm0,%xmm1
  movsd  0x18(%rsp),%xmm2
  mulsd  D95(%rip),%xmm2
  movsd  D28(%rip),%xmm0
  subsd  %xmm2,%xmm0
  mulsd  D178(%rip),%xmm1
  addsd  %xmm1,%xmm0
  mulsd  D110(%rip),%xmm0
  movzwl (%r15,%r13,2),%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%rbp,%r13,8)
  jmp    L371
L340:
  mov    0x2c(%rsp),%r15d
  mov    (%rsp),%r12d
L27:
  test   %r15d,%r15d
  jle    L35
  mov    %r15d,(%rsp)
  jmp    L364
L308:
  movsd  0x0(%rbp,%rax,8),%xmm2
  movsd  (%rcx,%rax,8),%xmm10
  movsd  (%rbx,%rax,8),%xmm1
  movsd  (%rdx,%rax,8),%xmm5
  movapd %xmm2,%xmm3
  subsd  %xmm10,%xmm3
  movapd %xmm1,%xmm0
  subsd  %xmm5,%xmm0
  movapd %xmm3,%xmm4
  mulsd  %xmm7,%xmm4
  movapd %xmm0,%xmm11
  mulsd  %xmm6,%xmm11
  subsd  %xmm11,%xmm4
  movsd  %xmm4,(%rcx,%rax,8)
  mulsd  %xmm7,%xmm0
  mulsd  %xmm6,%xmm3
  addsd  %xmm3,%xmm0
  movsd  %xmm0,(%rdx,%rax,8)
  addsd  %xmm10,%xmm2
  movsd  %xmm2,0x0(%rbp,%rax,8)
  addsd  %xmm5,%xmm1
  movsd  %xmm1,(%rbx,%rax,8)
  add    %r13,%rax
  cmp    %eax,%r12d
  jg     L308
L215:
  movapd %xmm9,%xmm0
  mulsd  %xmm7,%xmm0
  movapd %xmm8,%xmm1
  mulsd  %xmm6,%xmm1
  subsd  %xmm1,%xmm0
  mulsd  %xmm9,%xmm6
  mulsd  %xmm8,%xmm7
  addsd  %xmm7,%xmm6
  add    $0x1,%rsi
  cmp    %esi,%r14d
  jle    L102
  movapd %xmm0,%xmm7
L270:
  mov    %rsi,%rax
  cmp    %esi,%r12d
  jg     L308
  jmp    L215
L102:
  subl   $0x1,(%rsp)
  je     L35
L364:
  mov    (%rsp),%esi
  mov    $0x2,%edi
  call   <pow@plt>
  mov    %rax,%r15
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  lea    0x38(%rsp),%rdi
  lea    0x30(%rsp),%rsi
  pxor   %xmm1,%xmm1
  cvtsi2sd %r14d,%xmm1
  movsd  D39(%rip),%xmm0
  divsd  %xmm1,%xmm0
  call   <sincos@plt>
  movsd  0x30(%rsp),%xmm9
  movsd  0x38(%rsp),%xmm8
  xorpd  D79(%rip),%xmm8
  cmp    $0x1,%r15d
  jle    L102
  movslq %r14d,%rdx
  shl    $0x3,%rdx
  lea    0x0(%rbp,%rdx,1),%rcx
  add    %rbx,%rdx
  mov    $0x0,%esi
  pxor   %xmm6,%xmm6
  movsd  D116(%rip),%xmm7
  movslq %r15d,%r13
  jmp    L270
L35:
  mov    %r12d,%r13d
  shr    $0x1f,%r13d
  add    %r12d,%r13d
  sar    %r13d
  cmp    $0x1,%r12d
  jle    L325
  lea    -0x2(%r12),%edi
  mov    $0x0,%esi
  mov    $0x0,%ecx
  jmp    L149
L239:
  mov    %r13d,%edx
  cmp    %ecx,%r13d
  jg     L32
L393:
  sub    %edx,%ecx
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  cmp    %eax,%ecx
  jge    L393
L32:
  add    %edx,%ecx
  lea    0x1(%rsi),%rax
  cmp    %rsi,%rdi
  je     L325
  mov    %rax,%rsi
L149:
  cmp    %esi,%ecx
  jl     L239
  movslq %ecx,%rax
  shl    $0x3,%rax
  lea    0x0(%rbp,%rax,1),%rdx
  movsd  (%rdx),%xmm1
  add    %rbx,%rax
  movsd  (%rax),%xmm0
  movsd  0x0(%rbp,%rsi,8),%xmm2
  movsd  %xmm2,(%rdx)
  movsd  (%rbx,%rsi,8),%xmm2
  movsd  %xmm2,(%rax)
  movsd  %xmm1,0x0(%rbp,%rsi,8)
  movsd  %xmm0,(%rbx,%rsi,8)
  jmp    L239
L325:
  pxor   %xmm6,%xmm6
  cvtsi2sd %r12d,%xmm6
  movsd  %xmm6,(%rsp)
  movsd  (%rbx),%xmm0
  divsd  %xmm6,%xmm0
  movsd  %xmm0,(%rbx)
  movsd  0x0(%rbp),%xmm0
  divsd  %xmm6,%xmm0
  movsd  %xmm0,0x0(%rbp)
  movsd  (%rbx),%xmm1
  mulsd  %xmm0,%xmm0
  mulsd  %xmm1,%xmm1
  addsd  %xmm1,%xmm0
  pxor   %xmm1,%xmm1
  ucomisd %xmm0,%xmm1
  ja     L155
  sqrtsd %xmm0,%xmm0
L221:
  mov    0x20(%rsp),%r14
  movsd  %xmm0,(%r14)
  cmp    $0x3,%r12d
  jle    L370
  mov    $0x1,%r12d
L217:
  movsd  (%rbx,%r12,8),%xmm0
  addsd  %xmm0,%xmm0
  movsd  (%rsp),%xmm7
  divsd  %xmm7,%xmm0
  movsd  %xmm0,(%rbx,%r12,8)
  movsd  0x0(%rbp,%r12,8),%xmm0
  addsd  %xmm0,%xmm0
  divsd  %xmm7,%xmm0
  movsd  %xmm0,0x0(%rbp,%r12,8)
  movsd  (%rbx,%r12,8),%xmm1
  mulsd  %xmm0,%xmm0
  mulsd  %xmm1,%xmm1
  addsd  %xmm1,%xmm0
  pxor   %xmm6,%xmm6
  ucomisd %xmm0,%xmm6
  ja     L173
  sqrtsd %xmm0,%xmm0
L75:
  movsd  %xmm0,(%r14,%r12,8)
  add    $0x1,%r12
  cmp    %r12d,%r13d
  jg     L217
L172:
  mov    $0x0,%r12d
  mov    0x20(%rsp),%r14
L367:
  movsd  D207(%rip),%xmm0
  mulsd  (%r14,%r12,8),%xmm0
  addsd  D172(%rip),%xmm0
  call   <log10@plt>
  lea    (%rax,%rax,4),%eax
  shl    $0x2,%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movsd  %xmm0,(%r14,%r12,8)
  add    $0x1,%r12
  cmp    %r12d,%r13d
  jg     L367
L185:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    %r13d,%eax
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L155:
  call   <sqrt@plt>
  jmp    L221
L173:
  call   <sqrt@plt>
  jmp    L75
L370:
  cmp    $0x1,%r12d
  jle    L185
  jmp    L172
```

tool_calls: name: unpack_data
arguments: label: D94
datatype: byte[8]
name: unpack_data
arguments: label: D163
datatype: f64
name: unpack_data
arguments: label: D2
datatype: f64
name: unpack_data
arguments: label: D209
datatype: f64
name: unpack_data
arguments: label: D96
datatype: byte[8]
name: unpack_data
arguments: label: D95
datatype: f64
name: unpack_data
arguments: label: D28
datatype: f64
name: unpack_data
arguments: label: D178
datatype: f64
name: unpack_data
arguments: label: D110
datatype: f64
name: unpack_data
arguments: label: D39
datatype: f64
name: unpack_data
arguments: label: D79
datatype: f32[4]
name: unpack_data
arguments: label: D116
datatype: f64
name: unpack_data
arguments: label: D207
datatype: f32[2]
name: unpack_data
arguments: label: D172
datatype: f64

tool: {"D94": [0x38,0xe9,0x2f,0x54,0xfb,0x21,0x19,0x40]}

tool: D163: 0.5

tool: D2: 0.46

tool: D209: 0.54

tool: {"D96": [0x38,0xe9,0x2f,0x54,0xfb,0x21,0x29,0x40]}

tool: D95: 0.49755

tool: D28: 0.42323

tool: D178: 0.07922

tool: D110: 2.4

tool: D39: 3.141592653

tool: {"D79": [0.0,-0.0,0.0,0.0]}

tool: D116: 1

tool: {"D207": [0.0,0.6875]}

tool: D172: 1e-07

assistant: ```c
int FFT(unsigned short *wave, double *fft, int ns, int WindowType) {
  int m, n, ip, le, le1, nm1, k, l, j, i, nv2;
  double u1, u2, u3, arg, c, s, t1, t2, t3, t4;
  double *x, *y;
  i = 1;
  while ((int)pow(2, i) < ns)
    i++;
  if (ns == (int)(pow(2, i))) {
    m = i;
    n = ns;
  } else {
    m = i - 1;
    n = (int)pow(2, m);
  }
  x = malloc(n * sizeof(double));
  y = malloc(n * sizeof(double));
  for (i = 0; i < n; i++) {
    y[i] = 0.0;
    switch (WindowType) {
    case 0:
      x[i] = wave[i] * (0.5 - 0.5 * cos(2 * 3.141592653 * i / n));
      break;
    case 1:
      x[i] = wave[i] * (0.54 - 0.46 * cos(2 * 3.141592653 * i / n));
      break;
    case 2:
      x[i] = wave[i] * (2.4 * (0.42323 - 0.49755 * cos(2 * 3.141592653 * i / n) + 0.07922 * cos(4 * 3.141592653 * i / n)));
      break;
    case 3:
      x[i] = wave[i];
      break;
    default:
      x[i] = wave[i] * (2.4 * (0.42323 - 0.49755 * cos(2 * 3.141592653 * (i) / n) + 0.07922 * cos(4 * 3.141592653 * (i) / n)));
      break;
    }
  }
  for (l = 0; l < m; l++) {
    le = (int)pow(2, m - l);
    le1 = le / 2;
    u1 = 1.0;
    u2 = 0.0;
    arg = 3.141592653 / le1;
    c = cos(arg);
    s = -sin(arg);
    for (j = 0; j < le1; j++) {
      for (i = j; i < n; i = i + le) {
        ip = i + le1;
        t1 = x[i] + x[ip];
        t2 = y[i] + y[ip];
        t3 = x[i] - x[ip];
        t4 = y[i] - y[ip];
        x[ip] = t3 * u1 - t4 * u2;
        y[ip] = t4 * u1 + t3 * u2;
        x[i] = t1;
        y[i] = t2;
      }
      u3 = u1 * c - u2 * s;
      u2 = u2 * c + u1 * s;
      u1 = u3;
    }
  }
  nv2 = n / 2;
  nm1 = n - 1;
  j = 0;
  i = 0;
  while (i < nm1) {
    if (i > j)
      goto rif;
    t1 = x[j];
    t2 = y[j];
    x[j] = x[i];
    y[j] = y[i];
    x[i] = t1;
    y[i] = t2;
  rif:
    k = nv2;
  rife:
    if (k > j)
      goto rifer;
    j = j - k;
    k = k / 2;
    goto rife;
  rifer:
    j = j + k;
    i++;
  }
  y[0] = y[0] / n;
  x[0] = x[0] / n;
  fft[0] = sqrt(x[0] * x[0] + y[0] * y[0]);
  for (i = 1; i < n / 2; i++) {
    y[i] = 2 * y[i] / n;
    x[i] = 2 * x[i] / n;
    fft[i] = sqrt(x[i] * x[i] + y[i] * y[i]);
  }
  for (i = 0; i < n / 2; i++)
    fft[i] = 20 * log10(fft[i] / 4096 + 0.0000001);
  free(x);
  free(y);
  return (n / 2);
}
```