user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<librpip_uart_config_convert_l2b>:
  endbr64
  cmp    $0x7a120,%edi
  je     L242
  jg     L122
  cmp    $0x9600,%edi
  je     L15
  jle    L67
  cmp    $0x38400,%edi
  je     L51
  jle    L194
  cmp    $0x70800,%edi
  jne    L13
  mov    D41(%rip),%rax
  mov    (%rax),%eax
  ret
L67:
  cmp    $0x12c0,%edi
  je     L56
  jle    L0
  cmp    $0x2580,%edi
  je     L16
  cmp    $0x4b00,%edi
  jne    L156
  mov    D77(%rip),%rax
  mov    (%rax),%eax
  ret
L0:
  cmp    $0x4b0,%edi
  je     L135
  cmp    $0x960,%edi
  jne    L230
  mov    D131(%rip),%rax
  mov    (%rax),%eax
  ret
L230:
  mov    $0x0,%eax
  ret
L156:
  mov    $0x0,%eax
  ret
L194:
  cmp    $0xe100,%edi
  je     L252
  cmp    $0x1c200,%edi
  jne    L102
  mov    D175(%rip),%rax
  mov    (%rax),%eax
  ret
L102:
  mov    $0x0,%eax
  ret
L13:
  mov    $0x0,%eax
  ret
L122:
  cmp    $0x1e8480,%edi
  je     L183
  jle    L94
  cmp    $0x3567e0,%edi
  je     L245
  jle    L104
  cmp    $0x3d0900,%edi
  jne    L79
  mov    D70(%rip),%rax
  mov    (%rax),%eax
  ret
L94:
  cmp    $0xf4240,%edi
  je     L113
  jle    L220
  cmp    $0x119400,%edi
  je     L277
  cmp    $0x16e360,%edi
  jne    L66
  mov    D18(%rip),%rax
  mov    (%rax),%eax
  ret
L220:
  cmp    $0x8ca00,%edi
  je     L53
  cmp    $0xe1000,%edi
  jne    L169
  mov    D36(%rip),%rax
  mov    (%rax),%eax
  ret
L169:
  mov    $0x0,%eax
  ret
L66:
  mov    $0x0,%eax
  ret
L104:
  cmp    $0x2625a0,%edi
  je     L192
  cmp    $0x2dc6c0,%edi
  jne    L115
  mov    D34(%rip),%rax
  mov    (%rax),%eax
  ret
L115:
  mov    $0x0,%eax
  ret
L79:
  mov    $0x0,%eax
  ret
L135:
  mov    D138(%rip),%rax
  mov    (%rax),%eax
  ret
L56:
  mov    D81(%rip),%rax
  mov    (%rax),%eax
  ret
L16:
  mov    D93(%rip),%rax
  mov    (%rax),%eax
  ret
L15:
  mov    D11(%rip),%rax
  mov    (%rax),%eax
  ret
L252:
  mov    D177(%rip),%rax
  mov    (%rax),%eax
  ret
L51:
  mov    D30(%rip),%rax
  mov    (%rax),%eax
  ret
L242:
  mov    D186(%rip),%rax
  mov    (%rax),%eax
  ret
L53:
  mov    D154(%rip),%rax
  mov    (%rax),%eax
  ret
L113:
  mov    D179(%rip),%rax
  mov    (%rax),%eax
  ret
L277:
  mov    D191(%rip),%rax
  mov    (%rax),%eax
  ret
L183:
  mov    D142(%rip),%rax
  mov    (%rax),%eax
  ret
L192:
  mov    D5(%rip),%rax
  mov    (%rax),%eax
  ret
L245:
  mov    D189(%rip),%rax
  mov    (%rax),%eax
  ret
```

assistant: ```c
uint32_t librpip_uart_config_convert_l2b(uint32_t baud) {
  switch (baud) {
  case 1200:
    return B1200;
    break;
  case 2400:
    return B2400;
    break;
  case 4800:
    return B4800;
    break;
  case 9600:
    return B9600;
    break;
  case 19200:
    return B19200;
    break;
  case 38400:
    return B38400;
    break;
  case 57600:
    return B57600;
    break;
  case 115200:
    return B115200;
    break;
  case 230400:
    return B230400;
    break;
  case 460800:
    return B460800;
    break;
  case 500000:
    return B500000;
    break;
  case 576000:
    return B576000;
    break;
  case 921600:
    return B921600;
    break;
  case 1000000:
    return B1000000;
    break;
  case 1152000:
    return B1152000;
    break;
  case 1500000:
    return B1500000;
    break;
  case 2000000:
    return B2000000;
    break;
  case 2500000:
    return B2500000;
    break;
  case 3000000:
    return B3000000;
    break;
  case 3500000:
    return B3500000;
    break;
  case 4000000:
    return B4000000;
    break;
  }
  return 0;
}
```