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

```asm
<v_size_is_p2>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x4(%rbp)
  cmpl   $0x80000000,-0x4(%rbp)
  je     L739
  cmpl   $0x80000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x40000000,-0x4(%rbp)
  je     L488
  cmpl   $0x40000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x20000000,-0x4(%rbp)
  je     L642
  cmpl   $0x20000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x10000000,-0x4(%rbp)
  je     L498
  cmpl   $0x10000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x8000000,-0x4(%rbp)
  je     L27
  cmpl   $0x8000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x4000000,-0x4(%rbp)
  je     L397
  cmpl   $0x4000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x2000000,-0x4(%rbp)
  je     L499
  cmpl   $0x2000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x1000000,-0x4(%rbp)
  je     L372
  cmpl   $0x1000000,-0x4(%rbp)
  ja     L510
  cmpl   $0x800000,-0x4(%rbp)
  je     L236
  cmpl   $0x800000,-0x4(%rbp)
  ja     L510
  cmpl   $0x400000,-0x4(%rbp)
  je     L387
  cmpl   $0x400000,-0x4(%rbp)
  ja     L510
  cmpl   $0x200000,-0x4(%rbp)
  je     L720
  cmpl   $0x200000,-0x4(%rbp)
  ja     L510
  cmpl   $0x100000,-0x4(%rbp)
  je     L142
  cmpl   $0x100000,-0x4(%rbp)
  ja     L510
  cmpl   $0x80000,-0x4(%rbp)
  je     L850
  cmpl   $0x80000,-0x4(%rbp)
  ja     L510
  cmpl   $0x40000,-0x4(%rbp)
  je     L684
  cmpl   $0x40000,-0x4(%rbp)
  ja     L510
  cmpl   $0x20000,-0x4(%rbp)
  je     L331
  cmpl   $0x20000,-0x4(%rbp)
  ja     L510
  cmpl   $0x10000,-0x4(%rbp)
  je     L85
  cmpl   $0x10000,-0x4(%rbp)
  ja     L510
  cmpl   $0x8000,-0x4(%rbp)
  je     L534
  cmpl   $0x8000,-0x4(%rbp)
  ja     L510
  cmpl   $0x4000,-0x4(%rbp)
  je     L796
  cmpl   $0x4000,-0x4(%rbp)
  ja     L510
  cmpl   $0x2000,-0x4(%rbp)
  je     L121
  cmpl   $0x2000,-0x4(%rbp)
  ja     L510
  cmpl   $0x1000,-0x4(%rbp)
  je     L296
  cmpl   $0x1000,-0x4(%rbp)
  ja     L510
  cmpl   $0x800,-0x4(%rbp)
  je     L382
  cmpl   $0x800,-0x4(%rbp)
  ja     L510
  cmpl   $0x400,-0x4(%rbp)
  je     L702
  cmpl   $0x400,-0x4(%rbp)
  ja     L510
  cmpl   $0x200,-0x4(%rbp)
  je     L108
  cmpl   $0x200,-0x4(%rbp)
  ja     L510
  cmpl   $0x100,-0x4(%rbp)
  je     L815
  cmpl   $0x100,-0x4(%rbp)
  ja     L510
  cmpl   $0x80,-0x4(%rbp)
  je     L162
  cmpl   $0x80,-0x4(%rbp)
  ja     L510
  cmpl   $0x20,-0x4(%rbp)
  ja     L458
  cmpl   $0x0,-0x4(%rbp)
  je     L510
  cmpl   $0x20,-0x4(%rbp)
  ja     L510
  mov    -0x4(%rbp),%eax
  lea    0x0(,%rax,4),%rdx
  lea    D11(%rip),%rax
  mov    (%rdx,%rax,1),%eax
  cltq
  lea    D11(%rip),%rdx
  add    %rdx,%rax
  notrack jmp *%rax
L458:
  cmpl   $0x40,-0x4(%rbp)
  je     L304
  jmp    L510
  mov    $0x0,%eax
  jmp    L484
  mov    $0x1,%eax
  jmp    L484
  mov    $0x2,%eax
  jmp    L484
  mov    $0x3,%eax
  jmp    L484
  mov    $0x4,%eax
  jmp    L484
  mov    $0x5,%eax
  jmp    L484
L304:
  mov    $0x6,%eax
  jmp    L484
L162:
  mov    $0x7,%eax
  jmp    L484
L815:
  mov    $0x8,%eax
  jmp    L484
L108:
  mov    $0x9,%eax
  jmp    L484
L702:
  mov    $0xa,%eax
  jmp    L484
L382:
  mov    $0xb,%eax
  jmp    L484
L296:
  mov    $0xc,%eax
  jmp    L484
L121:
  mov    $0xd,%eax
  jmp    L484
L796:
  mov    $0xe,%eax
  jmp    L484
L534:
  mov    $0xf,%eax
  jmp    L484
L85:
  mov    $0x10,%eax
  jmp    L484
L331:
  mov    $0x11,%eax
  jmp    L484
L684:
  mov    $0x12,%eax
  jmp    L484
L850:
  mov    $0x13,%eax
  jmp    L484
L142:
  mov    $0x14,%eax
  jmp    L484
L720:
  mov    $0x15,%eax
  jmp    L484
L387:
  mov    $0x16,%eax
  jmp    L484
L236:
  mov    $0x17,%eax
  jmp    L484
L372:
  mov    $0x18,%eax
  jmp    L484
L499:
  mov    $0x19,%eax
  jmp    L484
L397:
  mov    $0x1a,%eax
  jmp    L484
L27:
  mov    $0x1b,%eax
  jmp    L484
L498:
  mov    $0x1c,%eax
  jmp    L484
L642:
  mov    $0x1d,%eax
  jmp    L484
L488:
  mov    $0x1e,%eax
  jmp    L484
L739:
  mov    $0x1f,%eax
  jmp    L484
L510:
  mov    $0x0,%eax
L484:
  pop    %rbp
  ret
```

assistant: ```c
unsigned int v_size_is_p2(unsigned int _size) {
  switch (_size) {
  case 1:
    return (0);
    break;
  case 2:
    return (1);
    break;
  case 4:
    return (2);
    break;
  case 8:
    return (3);
    break;
  case 16:
    return (4);
    break;
  case 32:
    return (5);
    break;
  case 64:
    return (6);
    break;
  case 128:
    return (7);
    break;
  case 256:
    return (8);
    break;
  case 512:
    return (9);
    break;
  case 1024:
    return (10);
    break;
  case 2048:
    return (11);
    break;
  case 4096:
    return (12);
    break;
  case 8192:
    return (13);
    break;
  case 16384:
    return (14);
    break;
  case 32768:
    return (15);
    break;
  case 65536:
    return (16);
    break;
  case 131072:
    return (17);
    break;
  case 262144:
    return (18);
    break;
  case 524288:
    return (19);
    break;
  case 1048576:
    return (20);
    break;
  case 2097152:
    return (21);
    break;
  case 4194304:
    return (22);
    break;
  case 8388608:
    return (23);
    break;
  case 16777216:
    return (24);
    break;
  case 33554432:
    return (25);
    break;
  case 67108864:
    return (26);
    break;
  case 134217728:
    return (27);
    break;
  case 268435456:
    return (28);
    break;
  case 536870912:
    return (29);
    break;
  case 1073741824:
    return (30);
    break;
  case 2147483648:
    return (31);
    break;
  default:
    return (0);
  }
}
```