//#define FD_CLR(n, p) ((p)->fd_bits[(n)/8] &= ~(1 << ((n) & 7)))
public static void FD_CLR(int fd, ref FDSET set)
{
int index = fd / 8;
byte mask = (byte)(1 << (fd & 7));
var newValue = set.fd_bits[index] & ~mask;
set.fd_bits[index] = (byte)newValue;
}
//#define FD_ISSET(n,p) ((p)->fd_bits[(n)/8] & (1 << ((n) & 7)))
public static int FD_ISSET(int fd, ref FDSET set)
{
int index = fd / 8;
byte mask = (byte)(1 << (fd & 7));
var rv = set.fd_bits[index] & mask;
return(rv);
}
//#define FD_ZERO(p) memset((void*)(p),0,sizeof(*(p)))
public static void FD_ZERO(ref FDSET set)
{
if (set.fd_bits == null)
{
set.fd_bits = new byte[4];
}
else
{
Array.Clear(set.fd_bits, 0, set.fd_bits.Length);
}
}
public static extern int zts_select(int nfds, [In, Out] ref FDSET readfds, [In, Out] ref FDSET writefds, [In, Out] ref FDSET exceptfds, ref TIMEVAL timeout);
