user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<connectTimeout>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  mov    %edi,-0x54(%rbp)
  mov    %rsi,-0x60(%rbp)
  mov    %edx,-0x58(%rbp)
  mov    %ecx,-0x64(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    D38(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x54(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <fcntl@plt>
  mov    %rax,-0x38(%rbp)
  mov    D17(%rip),%rax
  mov    (%rax),%rax
  or     %rax,-0x38(%rbp)
  mov    D104(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x38(%rbp),%rdx
  mov    -0x54(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <fcntl@plt>
  mov    D35(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,-0x24(%rbp)
  mov    -0x58(%rbp),%eax
  mov    %eax,%edi
  call   <htons@plt>
  mov    %eax,-0x28(%rbp)
  lea    -0x30(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x60(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <getHost@plt>
  test   %rax,%rax
  je     L54
  mov    $0x0,%eax
  jmp    L61
L54:
  mov    -0x30(%rbp),%eax
  mov    $0x4,%edx
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <memset@plt>
  lea    -0x30(%rbp),%rcx
  mov    -0x54(%rbp),%eax
  mov    $0x10,%edx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <connect@plt>
  mov    %eax,-0x3c(%rbp)
  cmpl   $0x0,-0x3c(%rbp)
  jns    L60
  mov    D28(%rip),%rax
  mov    (%rax),%rdx
  mov    D80(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jne    L50
  mov    -0x64(%rbp),%eax
  mov    %eax,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  lea    -0x48(%rbp),%rax
  mov    %rax,%rdi
  call   <FD_ZERO@plt>
  lea    -0x48(%rbp),%rdx
  mov    -0x54(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <FD_SET@plt>
  mov    -0x54(%rbp),%eax
  lea    0x1(%rax),%edi
  lea    -0x20(%rbp),%rdx
  lea    -0x48(%rbp),%rax
  mov    %rdx,%r8
  mov    $0x0,%ecx
  mov    %rax,%rdx
  mov    $0x0,%esi
  call   <select@plt>
  test   %rax,%rax
  jle    L57
  movl   $0x4,-0x44(%rbp)
  mov    D93(%rip),%rax
  mov    (%rax),%edx
  mov    D48(%rip),%rax
  mov    (%rax),%esi
  lea    -0x44(%rbp),%rdi
  lea    -0x40(%rbp),%rcx
  mov    -0x54(%rbp),%eax
  mov    %rdi,%r8
  mov    %eax,%edi
  call   <getsockopt@plt>
  mov    -0x40(%rbp),%eax
  test   %eax,%eax
  je     L60
  mov    $0x0,%eax
  jmp    L61
L57:
  mov    $0x0,%eax
  jmp    L61
L50:
  mov    $0x0,%eax
  jmp    L61
L60:
  mov    D38(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x54(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <fcntl@plt>
  mov    %rax,-0x38(%rbp)
  mov    D17(%rip),%rax
  mov    (%rax),%rax
  not    %rax
  and    %rax,-0x38(%rbp)
  mov    D104(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x38(%rbp),%rdx
  mov    -0x54(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <fcntl@plt>
  mov    $0x1,%eax
L61:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L5
  call   <__stack_chk_fail@plt>
L5:
  leave
  ret
```

assistant: ```c
int connectTimeout(int fd, char *host, int port, int timeout) {
  struct sockaddr_in dest_addr;
  fd_set myset;
  struct timeval tv;
  socklen_t lon;
  int valopt;
  long arg = fcntl(fd, F_GETFL, NULL);
  arg |= O_NONBLOCK;
  fcntl(fd, F_SETFL, arg);
  dest_addr.sin_family = AF_INET;
  dest_addr.sin_port = htons(port);
  if (getHost(host, &dest_addr.sin_addr))
    return 0;
  memset(dest_addr.sin_zero, '\0', sizeof dest_addr.sin_zero);
  int res = connect(fd, (struct sockaddr *)&dest_addr, sizeof(dest_addr));
  if (res < 0) {
    if (errno == EINPROGRESS) {
      tv.tv_sec = timeout;
      tv.tv_usec = 0;
      FD_ZERO(&myset);
      FD_SET(fd, &myset);
      if (select(fd + 1, NULL, &myset, NULL, &tv) > 0) {
        lon = sizeof(int);
        getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)(&valopt), &lon);
        if (valopt)
          return 0;
      } else
        return 0;
    } else
      return 0;
  }
  arg = fcntl(fd, F_GETFL, NULL);
  arg &= (~O_NONBLOCK);
  fcntl(fd, F_SETFL, arg);
  return 1;
}
```