inaddr.h

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#pragma once
 
#ifndef s_addr
 
typedef struct in_addr {
  union {
    struct {UCHAR s_b1,s_b2,s_b3,s_b4;} S_un_b;
    struct {USHORT s_w1,s_w2;} S_un_w;
    ULONG S_addr;
  } S_un;
} IN_ADDR, *PIN_ADDR, FAR *LPIN_ADDR;
 
#define s_addr  S_un.S_addr
#define s_host  S_un.S_un_b.s_b2
#define s_net   S_un.S_un_b.s_b1
#define s_imp   S_un.S_un_w.s_w2
#define s_impno S_un.S_un_b.s_b4
#define s_lh    S_un.S_un_b.s_b3
 
#endif /* s_addr */