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

```asm
<ipv4_net_to_type>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  sub    $0x8,%rsp
  call   <ntohl@plt>
  mov    %ebp,%edi
  shr    $0x18,%eax
  mov    %eax,%ebx
  call   <ntohl@plt>
  mov    %ebp,%edi
  mov    %eax,%r12d
  call   <ntohl@plt>
  mov    %ebp,%edi
  mov    %eax,%r13d
  call   <ntohl@plt>
  mov    %eax,%edx
  lea    D76(%rip),%rax
  test   %ebx,%ebx
  je     L293
  lea    D25(%rip),%rax
  cmp    $0xa,%ebx
  je     L293
  sar    $0x10,%r12d
  cmp    $0x64,%ebx
  je     L242
  lea    D81(%rip),%rax
  cmp    $0x7f,%ebx
  je     L293
  movzbl %r12b,%ecx
  cmp    $0xa9,%ebx
  jne    L55
  lea    D101(%rip),%rax
  cmp    $0xfe,%ecx
  jne    L55
L293:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L242:
  mov    %r12d,%ecx
  lea    D46(%rip),%rax
  and    $0xc0,%ecx
  cmp    $0x40,%ecx
  je     L293
  movzbl %r12b,%ecx
L55:
  mov    %r13d,%eax
  movzbl %ah,%eax
  mov    %eax,%r13d
  cmp    $0xac,%ebx
  je     L311
  cmp    $0xc0,%ebx
  sete   %al
  test   %ecx,%ecx
  sete   %sil
  mov    %eax,%edi
  mov    %eax,%r8d
  and    %sil,%dil
  je     L72
  lea    D102(%rip),%rax
  test   %r13d,%r13d
  je     L293
L220:
  cmp    $0x58,%ecx
  jne    L14
  test   %dil,%dil
  je     L14
  lea    D67(%rip),%rax
  cmp    $0x63,%r13d
  je     L293
L284:
  cmp    $0xc6,%ebx
  jne    L131
  and    $0xfe,%r12d
  lea    D51(%rip),%rax
  lea    D55(%rip),%rdx
  cmp    $0x12,%r12d
  cmove  %rdx,%rax
  jmp    L293
  nopl   0x0(%rax)
L311:
  mov    %r12d,%esi
  lea    D25(%rip),%rax
  xor    %edi,%edi
  and    $0xf0,%esi
  cmp    $0x10,%esi
  jne    L220
  jmp    L293
  nopl   0x0(%rax)
L72:
  cmp    $0x2,%ecx
  sete   %dil
  and    %al,%dil
  je     L39
  lea    D182(%rip),%rax
  test   %r13d,%r13d
  je     L293
L306:
  cmp    $0xa8,%ecx
  jne    L388
  test   %dil,%dil
  je     L388
  lea    D25(%rip),%rax
  jmp    L293
  nopl   (%rax)
L131:
  lea    -0xe0(%rbx),%eax
  cmp    $0xf,%eax
  ja     L360
  lea    D4(%rip),%rax
  jmp    L293
L39:
  cmp    $0x33,%ecx
  jne    L128
  test   %al,%al
  je     L128
  lea    D50(%rip),%rax
  cmp    $0x64,%r13d
  je     L293
L388:
  cmp    $0xff,%ebx
  jne    L284
  cmp    $0xff,%ecx
  jne    L284
  movzbl %dl,%eax
  cmp    $0xff,%eax
  jne    L360
  lea    D108(%rip),%rax
  cmp    $0xff,%r13d
  je     L293
L360:
  and    $0xf0,%ebx
  lea    D51(%rip),%rax
  lea    D94(%rip),%rdx
  cmp    $0xf0,%ebx
  cmove  %rdx,%rax
  jmp    L293
L128:
  cmp    $0xcb,%ebx
  jne    L6
  test   %sil,%sil
  je     L6
  lea    D113(%rip),%rax
  cmp    $0x71,%r13d
  je     L293
L12:
  cmp    $0x34,%ecx
  jne    L108
  test   %r8b,%r8b
  je     L108
  lea    D12(%rip),%rax
  cmp    $0xc1,%r13d
  jne    L284
  jmp    L293
L14:
  mov    %edi,%r8d
  jmp    L12
L108:
  mov    %r8d,%edi
  jmp    L306
L6:
  mov    %eax,%edi
  jmp    L220
```

tool_calls: name: disassemble_data
arguments: label: D76
type: string
name: disassemble_data
arguments: label: D25
type: string
name: disassemble_data
arguments: label: D81
type: string
name: disassemble_data
arguments: label: D101
type: string
name: disassemble_data
arguments: label: D46
type: string
name: disassemble_data
arguments: label: D102
type: string
name: disassemble_data
arguments: label: D67
type: string
name: disassemble_data
arguments: label: D51
type: string
name: disassemble_data
arguments: label: D55
type: string
name: disassemble_data
arguments: label: D182
type: string
name: disassemble_data
arguments: label: D4
type: string
name: disassemble_data
arguments: label: D50
type: string
name: disassemble_data
arguments: label: D108
type: string
name: disassemble_data
arguments: label: D94
type: string
name: disassemble_data
arguments: label: D113
type: string
name: disassemble_data
arguments: label: D12
type: string

tool: D76: This host on this network

tool: D25: Private Use

tool: D81: Loopback

tool: D101: Link Local

tool: D46: Shared Address Space

tool: D102: IETF Protocol Assignments

tool: D67: 6 to 4 Relay Anycast (Deprecated)

tool: D51: Internet

tool: D55: Benchmarking

tool: D182: Documentation (TEST-NET-1)

tool: D4: Multicast

tool: D50: Documentation (TEST-NET-2)

tool: D108: Limited Broadcast

tool: D94: Reserved

tool: D113: Documentation (TEST-NET-3)

tool: D12: AMT

assistant: ```c
const char *ipv4_net_to_type(struct in_addr net) {
  unsigned byte1 = (ntohl(net.s_addr) >> 24) & 0xff;
  unsigned byte2 = (ntohl(net.s_addr) >> 16) & 0xff;
  unsigned byte3 = (ntohl(net.s_addr) >> 8) & 0xff;
  unsigned byte4 = (ntohl(net.s_addr)) & 0xff;
  if (byte1 == 0) {
    return "This host on this network";
  }
  if (byte1 == 10) {
    return "Private Use";
  }
  if (byte1 == 100 && (byte2 & 0xc0) == 64) {
    return "Shared Address Space";
  }
  if (byte1 == 127) {
    return "Loopback";
  }
  if (byte1 == 169 && byte2 == 254) {
    return "Link Local";
  }
  if (byte1 == 172 && (byte2 & 0xf0) == 16) {
    return "Private Use";
  }
  if (byte1 == 192 && byte2 == 0 && byte3 == 0) {
    return "IETF Protocol Assignments";
  }
  if (byte1 == 192 && byte2 == 2 && byte3 == 0) {
    return "Documentation (TEST-NET-1)";
  }
  if (byte1 == 192 && byte2 == 51 && byte3 == 100) {
    return "Documentation (TEST-NET-2)";
  }
  if (byte1 == 203 && byte2 == 0 && byte3 == 113) {
    return "Documentation (TEST-NET-3)";
  }
  if (byte1 == 192 && byte2 == 88 && byte3 == 99) {
    return "6 to 4 Relay Anycast (Deprecated)";
  }
  if (byte1 == 192 && byte2 == 52 && byte3 == 193) {
    return "AMT";
  }
  if (byte1 == 192 && byte2 == 168) {
    return "Private Use";
  }
  if (byte1 == 255 && byte2 == 255 && byte3 == 255 && byte4 == 255) {
    return "Limited Broadcast";
  }
  if (byte1 == 198 && (byte2 & 0xfe) == 18) {
    return "Benchmarking";
  }
  if (byte1 >= 224 && byte1 <= 239) {
    return "Multicast";
  }
  if ((byte1 & 0xf0) == 240) {
    return "Reserved";
  }
  return "Internet";
}
```