user: Translate the below assembly code into C programming language:

```asm
<psycho_2_fft>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %rdx,-0x48(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  call   <fht@plt>
  mov    -0x38(%rbp),%rax
  movsd  (%rax),%xmm1
  mov    -0x38(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  mov    -0x40(%rbp),%rax
  movsd  %xmm0,(%rax)
  movl   $0x1,-0x28(%rbp)
  movl   $0x3ff,-0x24(%rbp)
  jmp    L18
L21:
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x24(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movsd  -0x20(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x18(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm1,%xmm0
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  D7(%rip),%xmm1
  divsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  D15(%rip),%xmm0
  comisd %xmm1,%xmm0
  jbe    L33
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  D15(%rip),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movsd  %xmm0,(%rax)
  jmp    L5
L33:
  movsd  -0x20(%rbp),%xmm0
  movq   D4(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  movq   %xmm0,%rax
  movsd  -0x18(%rbp),%xmm0
  movapd %xmm0,%xmm1
  movq   %rax,%xmm0
  call   <atan2@plt>
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  movsd  D24(%rip),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
L5:
  addl   $0x1,-0x28(%rbp)
  subl   $0x1,-0x24(%rbp)
L18:
  cmpl   $0x1ff,-0x28(%rbp)
  jle    L21
  mov    -0x38(%rbp),%rax
  add    $0x1000,%rax
  movsd  (%rax),%xmm1
  mov    -0x38(%rbp),%rax
  add    $0x1000,%rax
  movsd  (%rax),%xmm0
  mov    -0x40(%rbp),%rax
  add    $0x1000,%rax
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0x1000,%rax
  movsd  (%rax),%xmm0
  mov    -0x48(%rbp),%rax
  lea    0x1000(%rax),%rbx
  movapd %xmm0,%xmm1
  mov    D32(%rip),%rax
  movq   %rax,%xmm0
  call   <atan2@plt>
  movq   %xmm0,%rax
  mov    %rax,(%rbx)
  nop
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D7
type_infered: f64
name: retrieve_data
arguments: tag: D15
type_infered: f64
name: retrieve_data
arguments: tag: D4
type_infered: f32[2]
name: retrieve_data
arguments: tag: D24
type_infered: byte[8]
name: retrieve_data
arguments: tag: D32
type_infered: f32[2]

tool: D7: 2

tool: D15: 0.0005

tool: {"D4": [0.0,-0.0]}

tool: {"D24": [0x11,0x2d,0x44,0x54,0xfb,0x21,0xe9,0x3f]}

tool: {"D32": [0.0,0.0]}

assistant: ```c
void psycho_2_fft(double *x_real, double *energy, double *phi) {
  double imag, real;
  int i, j;
  fht(x_real);
  energy[0] = x_real[0] * x_real[0];
  for (i = 1, j = 1023; i < 512; i++, j--) {
    imag = x_real[i];
    real = x_real[j];
    energy[i] = (imag * imag + real * real) / 2.0;
    if (energy[i] < 0.0005) {
      energy[i] = 0.0005;
      phi[i] = 0;
    } else {
      phi[i] = atan2(-(double)imag, (double)real) + 3.14159265358979 / 4;
    }
  }
  energy[512] = x_real[512] * x_real[512];
  phi[512] = atan2(0.0, (double)x_real[512]);
}
```