user: Demonstrate the C code that generates the assembly output below:

```asm
<drftf1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  mov    %edi,-0x44(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %rdx,-0x58(%rbp)
  mov    %rcx,-0x60(%rbp)
  mov    %r8,-0x68(%rbp)
  mov    -0x68(%rbp),%rax
  mov    0x4(%rax),%eax
  mov    %eax,-0x20(%rbp)
  movl   $0x1,-0x28(%rbp)
  mov    -0x44(%rbp),%eax
  mov    %eax,-0x2c(%rbp)
  mov    -0x44(%rbp),%eax
  mov    %eax,-0x24(%rbp)
  movl   $0x0,-0x30(%rbp)
  jmp    L144
L129:
  mov    -0x20(%rbp),%eax
  sub    -0x30(%rbp),%eax
  mov    %eax,-0x1c(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x18(%rbp)
  mov    -0x2c(%rbp),%eax
  cltd
  idivl  -0x18(%rbp)
  mov    %eax,-0x14(%rbp)
  mov    -0x44(%rbp),%eax
  cltd
  idivl  -0x2c(%rbp)
  mov    %eax,-0x10(%rbp)
  mov    -0x10(%rbp),%eax
  imul   -0x14(%rbp),%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x18(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x10(%rbp),%eax
  sub    %eax,-0x24(%rbp)
  mov    $0x1,%eax
  sub    -0x28(%rbp),%eax
  mov    %eax,-0x28(%rbp)
  cmpl   $0x4,-0x18(%rbp)
  jne    L151
  mov    -0x24(%rbp),%edx
  mov    -0x10(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%edx
  mov    -0x10(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x28(%rbp)
  je     L41
  mov    -0x4(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%r9
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%r8
  mov    -0x50(%rbp),%rcx
  mov    -0x58(%rbp),%rdx
  mov    -0x14(%rbp),%esi
  mov    -0x10(%rbp),%eax
  sub    $0x8,%rsp
  push   %rdi
  mov    %eax,%edi
  call   <dradf4@plt>
  add    $0x10,%rsp
  jmp    L37
L41:
  mov    -0x4(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x8(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%r9
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%r8
  mov    -0x58(%rbp),%rcx
  mov    -0x50(%rbp),%rdx
  mov    -0x14(%rbp),%esi
  mov    -0x10(%rbp),%eax
  sub    $0x8,%rsp
  push   %rdi
  mov    %eax,%edi
  call   <dradf4@plt>
  add    $0x10,%rsp
  jmp    L37
L151:
  nop
  cmpl   $0x2,-0x18(%rbp)
  jne    L164
  cmpl   $0x0,-0x28(%rbp)
  jne    L150
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x58(%rbp),%rcx
  mov    -0x50(%rbp),%rdx
  mov    -0x14(%rbp),%esi
  mov    -0x10(%rbp),%eax
  mov    %rdi,%r8
  mov    %eax,%edi
  call   <dradf2@plt>
  jmp    L37
L150:
  nop
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x50(%rbp),%rcx
  mov    -0x58(%rbp),%rdx
  mov    -0x14(%rbp),%esi
  mov    -0x10(%rbp),%eax
  mov    %rdi,%r8
  mov    %eax,%edi
  call   <dradf2@plt>
  jmp    L37
L164:
  nop
  cmpl   $0x1,-0x10(%rbp)
  jne    L21
  mov    $0x1,%eax
  sub    -0x28(%rbp),%eax
  mov    %eax,-0x28(%rbp)
L21:
  cmpl   $0x0,-0x28(%rbp)
  jne    L123
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x50(%rbp),%r9
  mov    -0x50(%rbp),%r8
  mov    -0xc(%rbp),%ecx
  mov    -0x14(%rbp),%edx
  mov    -0x18(%rbp),%esi
  mov    -0x10(%rbp),%eax
  push   %rdi
  push   -0x58(%rbp)
  push   -0x58(%rbp)
  push   -0x50(%rbp)
  mov    %eax,%edi
  call   <dradfg@plt>
  add    $0x20,%rsp
  movl   $0x1,-0x28(%rbp)
  jmp    L37
L123:
  nop
  mov    -0x24(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x60(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x58(%rbp),%r9
  mov    -0x58(%rbp),%r8
  mov    -0xc(%rbp),%ecx
  mov    -0x14(%rbp),%edx
  mov    -0x18(%rbp),%esi
  mov    -0x10(%rbp),%eax
  push   %rdi
  push   -0x50(%rbp)
  push   -0x50(%rbp)
  push   -0x58(%rbp)
  mov    %eax,%edi
  call   <dradfg@plt>
  add    $0x20,%rsp
  movl   $0x0,-0x28(%rbp)
L37:
  mov    -0x14(%rbp),%eax
  mov    %eax,-0x2c(%rbp)
  addl   $0x1,-0x30(%rbp)
L144:
  mov    -0x30(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L129
  cmpl   $0x1,-0x28(%rbp)
  je     L122
  movl   $0x0,-0x34(%rbp)
  jmp    L40
L44:
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x58(%rbp),%rax
  add    %rax,%rdx
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x50(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x34(%rbp)
L40:
  mov    -0x34(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jl     L44
  jmp    L148
L122:
  nop
L148:
  leave
  ret
```

assistant: ```c
void drftf1(int n, double *c, double *ch, double *wa, int *ifac) {
  int i, k1, l1, l2;
  int na, kh, nf;
  int ip, iw, ido, idl1, ix2, ix3;
  nf = ifac[1];
  na = 1;
  l2 = n;
  iw = n;
  for (k1 = 0; k1 < nf; k1++) {
    kh = nf - k1;
    ip = ifac[kh + 1];
    l1 = l2 / ip;
    ido = n / l2;
    idl1 = ido * l1;
    iw -= (ip - 1) * ido;
    na = 1 - na;
    if (ip != 4)
      goto L102;
    ix2 = iw + ido;
    ix3 = ix2 + ido;
    if (na != 0)
      dradf4(ido, l1, ch, c, wa + iw - 1, wa + ix2 - 1, wa + ix3 - 1);
    else
      dradf4(ido, l1, c, ch, wa + iw - 1, wa + ix2 - 1, wa + ix3 - 1);
    goto L110;
  L102:
    if (ip != 2)
      goto L104;
    if (na != 0)
      goto L103;
    dradf2(ido, l1, c, ch, wa + iw - 1);
    goto L110;
  L103:
    dradf2(ido, l1, ch, c, wa + iw - 1);
    goto L110;
  L104:
    if (ido == 1)
      na = 1 - na;
    if (na != 0)
      goto L109;
    dradfg(ido, ip, l1, idl1, c, c, c, ch, ch, wa + iw - 1);
    na = 1;
    goto L110;
  L109:
    dradfg(ido, ip, l1, idl1, ch, ch, ch, c, c, wa + iw - 1);
    na = 0;
  L110:
    l2 = l1;
  }
  if (na == 1)
    return;
  for (i = 0; i < n; i++)
    c[i] = ch[i];
}
```