user: 请从给定的汇编指令推导出C源代码:

```asm
<FFT>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  mov    %edi,-0x54(%rbp)
  mov    %rsi,-0x60(%rbp)
  mov    %rdx,-0x68(%rbp)
  mov    %ecx,-0x58(%rbp)
  mov    -0x54(%rbp),%eax
  mov    $0x1,%edx
  mov    %eax,%ecx
  shl    %cl,%edx
  mov    %edx,%eax
  mov    %eax,-0x28(%rbp)
  mov    -0x28(%rbp),%eax
  sar    %eax
  mov    %eax,-0x24(%rbp)
  movl   $0x0,-0x48(%rbp)
  movl   $0x0,-0x4c(%rbp)
  jmp    L56
L142:
  mov    -0x4c(%rbp),%eax
  cmp    -0x48(%rbp),%eax
  jge    L58
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x60(%rbp),%rax
  add    %rcx,%rax
  movss  (%rdx),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x68(%rbp),%rax
  add    %rcx,%rax
  movss  (%rdx),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  -0x8(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  -0x4(%rbp),%xmm0
  movss  %xmm0,(%rax)
L58:
  mov    -0x24(%rbp),%eax
  mov    %eax,-0x44(%rbp)
  jmp    L62
L118:
  mov    -0x44(%rbp),%eax
  sub    %eax,-0x48(%rbp)
  sarl   -0x44(%rbp)
L62:
  mov    -0x44(%rbp),%eax
  cmp    -0x48(%rbp),%eax
  jle    L118
  mov    -0x44(%rbp),%eax
  add    %eax,-0x48(%rbp)
  addl   $0x1,-0x4c(%rbp)
L56:
  mov    -0x28(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0x4c(%rbp)
  jl     L142
  movss  D17(%rip),%xmm0
  movss  %xmm0,-0x38(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x34(%rbp)
  movl   $0x1,-0x3c(%rbp)
  movl   $0x0,-0x40(%rbp)
  jmp    L57
L6:
  mov    -0x3c(%rbp),%eax
  mov    %eax,-0x1c(%rbp)
  shll   -0x3c(%rbp)
  movss  D40(%rip),%xmm0
  movss  %xmm0,-0x30(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x2c(%rbp)
  movl   $0x0,-0x48(%rbp)
  jmp    L111
L7:
  mov    -0x48(%rbp),%eax
  mov    %eax,-0x4c(%rbp)
  jmp    L91
L16:
  mov    -0x4c(%rbp),%edx
  mov    -0x1c(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  -0x30(%rbp),%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mulss  -0x2c(%rbp),%xmm1
  subss  %xmm1,%xmm0
  movss  %xmm0,-0x10(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x30(%rbp),%xmm1
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  -0x2c(%rbp),%xmm0
  addss  %xmm1,%xmm0
  movss  %xmm0,-0xc(%rbp)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  subss  -0x10(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  subss  -0xc(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  addss  -0x10(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  addss  -0xc(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x3c(%rbp),%eax
  add    %eax,-0x4c(%rbp)
L91:
  mov    -0x4c(%rbp),%eax
  cmp    -0x28(%rbp),%eax
  jl     L16
  movss  -0x30(%rbp),%xmm0
  mulss  -0x38(%rbp),%xmm0
  movss  -0x2c(%rbp),%xmm1
  mulss  -0x34(%rbp),%xmm1
  subss  %xmm1,%xmm0
  movss  %xmm0,-0x18(%rbp)
  movss  -0x30(%rbp),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x34(%rbp),%xmm1
  movss  -0x2c(%rbp),%xmm0
  mulss  -0x38(%rbp),%xmm0
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x2c(%rbp)
  movss  -0x18(%rbp),%xmm0
  movss  %xmm0,-0x30(%rbp)
  addl   $0x1,-0x48(%rbp)
L111:
  mov    -0x48(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L7
  movss  D40(%rip),%xmm0
  movaps %xmm0,%xmm1
  subss  -0x38(%rbp),%xmm1
  movss  D10(%rip),%xmm0
  mulss  %xmm0,%xmm1
  movd   %xmm1,%eax
  movd   %eax,%xmm0
  call   <sqrtf@plt>
  movd   %xmm0,%eax
  mov    %eax,-0x34(%rbp)
  movss  -0x38(%rbp),%xmm1
  movss  D40(%rip),%xmm0
  addss  %xmm0,%xmm1
  movss  D10(%rip),%xmm0
  mulss  %xmm0,%xmm1
  movd   %xmm1,%eax
  movd   %eax,%xmm0
  call   <sqrtf@plt>
  movd   %xmm0,%eax
  mov    %eax,-0x38(%rbp)
  cmpl   $0x1,-0x58(%rbp)
  jne    L94
  movss  -0x34(%rbp),%xmm0
  movss  D6(%rip),%xmm1
  xorps  %xmm1,%xmm0
  movss  %xmm0,-0x34(%rbp)
L94:
  addl   $0x1,-0x40(%rbp)
L57:
  mov    -0x40(%rbp),%eax
  cmp    -0x54(%rbp),%eax
  jl     L6
  cmpl   $0x1,-0x58(%rbp)
  jne    L96
  pxor   %xmm1,%xmm1
  cvtsi2ssl -0x28(%rbp),%xmm1
  movss  D40(%rip),%xmm0
  divss  %xmm1,%xmm0
  movss  %xmm0,-0x20(%rbp)
  movl   $0x0,-0x4c(%rbp)
  jmp    L24
L55:
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mulss  -0x20(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mulss  -0x20(%rbp),%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x4c(%rbp)
L24:
  mov    -0x4c(%rbp),%eax
  cmp    -0x28(%rbp),%eax
  jl     L55
L96:
  nop
  leave
  ret
```

tool_calls: name: disassemble_data
arguments: data_tag: D17
datatype: byte[4]
name: disassemble_data
arguments: data_tag: D40
datatype: byte[4]
name: disassemble_data
arguments: data_tag: D10
datatype: byte[4]
name: disassemble_data
arguments: data_tag: D6
datatype: byte[4]

tool: {"D17": [0x00,0x00,0x80,0xbf]}

tool: {"D40": [0x00,0x00,0x80,0x3f]}

tool: {"D10": [0x00,0x00,0x00,0x3f]}

tool: {"D6": [0x00,0x00,0x00,0x80]}

assistant: ```c
void FFT(int m, float *x, float *y, int dir) {
  int n, i, i1, j, k, i2, l, l1, l2;
  float c1, c2, tx, ty, t1, t2, u1, u2, z;
  n = 1 << m;
  i2 = n >> 1;
  j = 0;
  for (i = 0; i < n - 1; i++) {
    if (i < j) {
      tx = x[i];
      ty = y[i];
      x[i] = x[j];
      y[i] = y[j];
      x[j] = tx;
      y[j] = ty;
    }
    k = i2;
    while (k <= j) {
      j -= k;
      k >>= 1;
    }
    j += k;
  }
  c1 = -1.0f;
  c2 = 0;
  l2 = 1;
  for (l = 0; l < m; l++) {
    l1 = l2;
    l2 <<= 1;
    u1 = 1.0f;
    u2 = 0;
    for (j = 0; j < l1; j++) {
      for (i = j; i < n; i += l2) {
        i1 = i + l1;
        t1 = u1 * x[i1] - u2 * y[i1];
        t2 = u1 * y[i1] + u2 * x[i1];
        x[i1] = x[i] - t1;
        y[i1] = y[i] - t2;
        x[i] += t1;
        y[i] += t2;
      }
      z = u1 * c1 - u2 * c2;
      u2 = u1 * c2 + u2 * c1;
      u1 = z;
    }
    c2 = sqrtf(0.5f * (1.0f - c1));
    c1 = sqrtf(0.5f * (1.0f + c1));
    if (dir == 1)
      c2 = -c2;
  }
  if (dir == 1) {
    float scale = 1.0f / n;
    for (i = 0; i < n; i++) {
      x[i] *= scale;
      y[i] *= scale;
    }
  }
}
```