user: What would the C source look like for the assembly code provided here?

```asm
<FFT1>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  push   %r14
  mov    %rsi,%r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x98,%rsp
  mov    %edx,0x54(%rsp)
  mov    %ecx,0x7c(%rsp)
  cmp    $0xffffffff,%ecx
  je     L79
L176:
  mov    0x54(%rsp),%ebp
  mov    %ebp,%edi
  call   <Calc_power_of_two@plt>
  mov    %ebp,%edx
  mov    %r14,%rsi
  mov    %r15,%rdi
  mov    %eax,%ecx
  mov    %eax,0x60(%rsp)
  mov    %eax,%ebx
  call   <Make_initial_data@plt>
  pxor   %xmm0,%xmm0
  movsd  D52(%rip),%xmm1
  cvtsi2sd %ebp,%xmm0
  divsd  %xmm0,%xmm1
  movsd  %xmm1,0x58(%rsp)
  test   %ebx,%ebx
  jle    L183
L162:
  mov    0x54(%rsp),%eax
  movl   $0x2,0x3c(%rsp)
  movl   $0x0,0x50(%rsp)
  sub    $0x1,%eax
  lea    0x8(,%rax,8),%rdi
  mov    %eax,0x78(%rsp)
  mov    %rax,0x70(%rsp)
  lea    (%r14,%rdi,1),%rax
  cmp    %rax,%r15
  lea    (%r15,%rdi,1),%rax
  mov    %rdi,0x68(%rsp)
  setae  %dl
  cmp    %rax,%r14
  setae  %al
  or     %eax,%edx
  mov    %r14,%rax
  mov    %r15,%r14
  mov    %dl,0x67(%rsp)
  mov    %rax,%r15
  xchg   %ax,%ax
L38:
  mov    0x54(%rsp),%eax
  mov    0x3c(%rsp),%ecx
  pxor   %xmm0,%xmm0
  cltd
  idiv   %ecx
  sar    %ecx
  cvtsi2sd %eax,%xmm0
  mulsd  0x58(%rsp),%xmm0
  mov    %eax,0x44(%rsp)
  movsd  %xmm0,0x30(%rsp)
  test   %eax,%eax
  jle    L151
  movslq 0x3c(%rsp),%rax
  movl   $0x0,0x38(%rsp)
  lea    0x88(%rsp),%r13
  mov    %rax,%rdx
  shl    $0x3,%rax
  mov    %rax,0x48(%rsp)
  lea    D32(%rip),%rax
  mov    %rax,0x20(%rsp)
  lea    D98(%rip),%rax
  mov    %edx,0x10(%rsp)
  mov    %rax,0x28(%rsp)
  mov    %r15,%rax
  mov    %r14,%r15
  mov    %ecx,%r14d
  mov    %rax,%rbx
  cs nopw 0x0(%rax,%rax,1)
L37:
  mov    0x10(%rsp),%eax
  sub    0x3c(%rsp),%eax
  xor    %ebp,%ebp
  mov    %r15,%rdx
  mov    %eax,%r12d
  mov    %eax,0x40(%rsp)
  pxor   %xmm2,%xmm2
  mov    %rbp,%r15
  mov    D9(%rip),%rax
  movapd %xmm2,%xmm5
  mov    %rdx,%rbp
  movq   %rax,%xmm0
  mov    %rbx,%rax
  mov    %r14d,%ebx
  mov    %r12d,%r14d
  mov    %rax,%r12
  jmp    L193
  nopl   0x0(%rax)
L98:
  movapd %xmm5,%xmm0
  mov    %r13,%rdi
  movsd  %xmm5,0x8(%rsp)
  lea    0x80(%rsp),%rsi
  call   <sincos@plt>
  movsd  0x8(%rsp),%xmm5
  add    $0x1,%r15
  movsd  0x80(%rsp),%xmm0
  movsd  0x88(%rsp),%xmm2
L193:
  mov    %r14d,%eax
  lea    (%rbx,%r14,1),%esi
  cmp    %r15d,%ebx
  jg     L100
  mov    %r14d,%esi
  sub    %ebx,%eax
L100:
  movslq %esi,%rsi
  movapd %xmm2,%xmm6
  movapd %xmm0,%xmm4
  cltq
  movsd  (%r12,%rsi,8),%xmm1
  movsd  0x0(%rbp,%rsi,8),%xmm3
  add    $0x1,%r14d
  mov    0x20(%rsp),%rcx
  addsd  0x30(%rsp),%xmm5
  mulsd  %xmm1,%xmm6
  mulsd  %xmm3,%xmm4
  addsd  0x0(%rbp,%rax,8),%xmm4
  mulsd  %xmm3,%xmm2
  mulsd  %xmm1,%xmm0
  addsd  %xmm6,%xmm4
  movsd  %xmm4,(%rcx,%r15,8)
  addsd  (%r12,%rax,8),%xmm0
  mov    0x28(%rsp),%rax
  subsd  %xmm2,%xmm0
  movsd  %xmm0,(%rax,%r15,8)
  cmp    0x10(%rsp),%r14d
  jne    L98
  mov    0x48(%rsp),%rdi
  mov    0x40(%rsp),%edx
  mov    %ebx,%r14d
  mov    %rbp,%r15
  add    %rdi,0x20(%rsp)
  mov    %r12,%rbx
  add    %rdi,0x28(%rsp)
  mov    0x3c(%rsp),%edi
  addl   $0x1,0x38(%rsp)
  mov    0x38(%rsp),%eax
  lea    (%rdx,%rdi,2),%edx
  mov    %edx,0x10(%rsp)
  cmp    %eax,0x44(%rsp)
  jne    L37
  mov    %rbp,%r14
  mov    %r12,%r15
L151:
  mov    0x54(%rsp),%edx
  test   %edx,%edx
  jle    L136
  cmpb   $0x0,0x67(%rsp)
  je     L118
  mov    0x68(%rsp),%rbx
  lea    D32(%rip),%r9
  mov    %r14,%rdi
  mov    %r9,%rsi
  mov    %rbx,%rdx
  call   <memcpy@plt>
  lea    D98(%rip),%rsi
  mov    %rbx,%rdx
  mov    %r15,%rdi
  call   <memcpy@plt>
L136:
  addl   $0x1,0x50(%rsp)
  mov    0x50(%rsp),%eax
  shll   0x3c(%rsp)
  cmp    0x60(%rsp),%eax
  jl     L38
  cmpl   $0xffffffff,0x7c(%rsp)
  mov    %r15,%r14
  je     L6
L183:
  add    $0x98,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L118:
  mov    0x70(%rsp),%rcx
  xor    %eax,%eax
  lea    D32(%rip),%r9
  lea    D98(%rip),%rsi
  cs nopw 0x0(%rax,%rax,1)
L3:
  movsd  (%r9,%rax,8),%xmm0
  mov    %rax,%rdx
  movsd  %xmm0,(%r14,%rax,8)
  movsd  (%rsi,%rax,8),%xmm0
  movsd  %xmm0,(%r15,%rax,8)
  add    $0x1,%rax
  cmp    %rdx,%rcx
  jne    L3
  jmp    L136
L79:
  test   %edx,%edx
  jle    L176
  pxor   %xmm2,%xmm2
  movq   D54(%rip),%xmm1
  xor    %eax,%eax
  cvtsi2sd %edx,%xmm2
  movslq %edx,%rdx
L125:
  movsd  (%r15,%rax,8),%xmm0
  divsd  %xmm2,%xmm0
  movsd  %xmm0,(%r15,%rax,8)
  movsd  (%r14,%rax,8),%xmm0
  xorpd  %xmm1,%xmm0
  divsd  %xmm2,%xmm0
  movsd  %xmm0,(%r14,%rax,8)
  add    $0x1,%rax
  cmp    %rdx,%rax
  jne    L125
  mov    0x54(%rsp),%ebp
  movaps %xmm1,0x10(%rsp)
  movsd  %xmm2,0x8(%rsp)
  mov    %ebp,%edi
  call   <Calc_power_of_two@plt>
  mov    %ebp,%edx
  mov    %r14,%rsi
  mov    %r15,%rdi
  mov    %eax,%ecx
  mov    %eax,%ebx
  mov    %eax,0x60(%rsp)
  call   <Make_initial_data@plt>
  movsd  D52(%rip),%xmm0
  test   %ebx,%ebx
  movsd  0x8(%rsp),%xmm2
  movapd 0x10(%rsp),%xmm1
  divsd  %xmm2,%xmm0
  movsd  %xmm0,0x58(%rsp)
  jg     L162
  mov    0x54(%rsp),%eax
  sub    $0x1,%eax
  mov    %eax,0x78(%rsp)
  jmp    L147
L6:
  mov    0x54(%rsp),%eax
  test   %eax,%eax
  jle    L183
  movq   D54(%rip),%xmm1
L147:
  mov    0x78(%rsp),%eax
  mov    %r14,%r8
  lea    0x8(%r14,%rax,8),%rax
L158:
  movsd  (%r8),%xmm0
  add    $0x8,%r8
  xorpd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%r8)
  cmp    %rax,%r8
  jne    L158
  jmp    L183
```

tool_calls: name: unpack_data
arguments: tag: D52
type_guessed: byte[8]
name: unpack_data
arguments: tag: D9
type_guessed: f32[2]
name: unpack_data
arguments: tag: D54
type_guessed: f32[2]

tool: {"D52": [0x1e,0x26,0x44,0x54,0xfb,0x21,0x19,0x40]}

tool: {"D9": [0.0,1.875]}

tool: {"D54": [0.0,-0.0]}

assistant: ```c
void FFT1(double *re_part, double *im_part, int number_of_data, int flag) {
  int i, j, k;
  int power;
  double unit_angle, step_angle;
  int dft, half, num_of_dft;
  int num_out, num_in1, num_in2;
  double re_buf, im_buf, angle;
  static double re_part_new[256], im_part_new[256];
  if (flag == -1) {
    for (i = 0; i < number_of_data; i++) {
      *(re_part + i) = *(re_part + i) / number_of_data;
      *(im_part + i) = -*(im_part + i) / number_of_data;
    }
  }
  power = Calc_power_of_two(number_of_data);
  Make_initial_data(re_part, im_part, number_of_data, power);
  unit_angle = 2.0 * 3.141592653589 / number_of_data;
  dft = 2;
  for (i = 0; i < power; i++) {
    num_of_dft = number_of_data / dft;
    step_angle = unit_angle * num_of_dft;
    half = dft / 2;
    for (j = 0; j < num_of_dft; j++) {
      angle = 0.0;
      for (k = 0; k < dft; k++) {
        num_out = j * dft + k;
        if (k < half) {
          num_in1 = num_out;
          num_in2 = num_in1 + half;
        } else {
          num_in2 = num_out;
          num_in1 = num_out - half;
        }
        re_buf = *(re_part + num_in2);
        im_buf = *(im_part + num_in2);
        re_part_new[num_out] = *(re_part + num_in1) + re_buf * cos(angle) + im_buf * sin(angle);
        im_part_new[num_out] = *(im_part + num_in1) + im_buf * cos(angle) - re_buf * sin(angle);
        angle = angle + step_angle;
      }
    }
    for (j = 0; j < number_of_data; j++) {
      *(re_part + j) = re_part_new[j];
      *(im_part + j) = im_part_new[j];
    }
    dft = dft * 2;
  }
  if (flag == -1) {
    for (j = 0; j < number_of_data; j++) {
      *(im_part + j) = -*(im_part + j);
    }
  }
}
```