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

```asm
<retrieve_target_curve>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  lea    D31(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x5c(%rbp),%rax
  mov    %rax,%rsi
  lea    D37(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    -0x5c(%rbp),%eax
  add    %eax,%eax
  movslq %eax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x50(%rbp)
  movslq %eax,%rdx
  mov    %rdx,%r14
  mov    $0x0,%r15d
  movslq %eax,%rdx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    $0x10,%eax
  sub    $0x1,%rax
  add    %rdx,%rax
  mov    $0x10,%esi
  mov    $0x0,%edx
  div    %rsi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L42:
  cmp    %rdx,%rsp
  je     L13
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L42
L13:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L16
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L16:
  mov    %rsp,%rax
  add    $0x7,%rax
  shr    $0x3,%rax
  shl    $0x3,%rax
  mov    %rax,-0x48(%rbp)
  mov    -0x48(%rbp),%rcx
  mov    -0x40(%rbp),%rdx
  lea    -0x5c(%rbp),%rax
  mov    %rax,%rsi
  mov    $0x7,%edi
  call   <_ada_use_c2pieri@plt>
  mov    %eax,-0x54(%rbp)
  lea    D6(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movl   $0x0,-0x58(%rbp)
  jmp    L44
L23:
  mov    -0x58(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x48(%rbp),%rax
  movslq %edx,%rdx
  movsd  (%rax,%rdx,8),%xmm0
  mov    -0x48(%rbp),%rax
  mov    -0x58(%rbp),%edx
  movslq %edx,%rdx
  mov    (%rax,%rdx,8),%rax
  movapd %xmm0,%xmm1
  movq   %rax,%xmm0
  lea    D0(%rip),%rax
  mov    %rax,%rdi
  mov    $0x2,%eax
  call   <printf@plt>
  addl   $0x2,-0x58(%rbp)
L44:
  mov    -0x5c(%rbp),%eax
  cmp    %eax,-0x58(%rbp)
  jl     L23
  mov    %rbx,%rsp
  mov    -0x54(%rbp),%eax
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L28
  call   <__stack_chk_fail@plt>
L28:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

tool_calls: name: unpack_data
arguments: data_label: D31
type_infered: string
name: unpack_data
arguments: data_label: D37
type_infered: string
name: unpack_data
arguments: data_label: D6
type_infered: string
name: unpack_data
arguments: data_label: D0
type_infered: string

tool: D31: 
Give degree of freedom of target curve : 

tool: D37: %d

tool: D6: the coefficients of the target curve :

tool: D0:   %.15le  %.15le 


assistant: ```c
int retrieve_target_curve(void) {
  int fail, n;
  int *b;
  printf("\nGive degree of freedom of target curve : ");
  scanf("%d", &n);
  {
    double c[2 * n];
    int i;
    fail = _ada_use_c2pieri(7, &n, b, c);
    printf("the coefficients of the target curve :\n");
    for (i = 0; i < n; i = i + 2)
      printf("  %.15le  %.15le \n", c[i], c[i + 1]);
  }
  return fail;
}
```