inet.h

一个内存数据库的源代码这是服务器端还有客户端

typedef struct _inet {
	unsigned char q1;
	unsigned char q2;
	unsigned char q3;
	unsigned char q4;
	unsigned char mask;
	unsigned char filler1;
	unsigned char filler2;
	unsigned char isnil;
} inet;

#define in_isnil(i) ((i)->q1 == 0 && (i)->q2 == 0 && (i)->q3 == 0 && (i)->q4 == 0 && (i)->mask == 0 && (i)->isnil != 0)
#define in_setnil(i) (i)->q1 = (i)->q2 = (i)->q3 = (i)->q4 = (i)->mask = (i)->filler1 = (i)->filler2 = 0; (i)->isnil = 1

#ifdef WIN32
#ifndef LIBINET
#define inet_export extern __declspec(dllimport)
#else
#define inet_export extern __declspec(dllexport)
#endif
#else
#define inet_export extern
#endif

inet_export int INETfromString(str src, int *len, inet **retval);
inet_export int INETtoString(str *retval, int *len, inet *handle);
inet_export str INETnew(inet * retval, str *in);
inet_export str INET_isnil(bit *retval, inet * val);
inet_export str INET_comp_EQ(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_NEQ(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_LT(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_GT(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_LE(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_GE(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_CW(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_CWE(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_CS(bit *retval, inet * val1, inet *val2);
inet_export str INET_comp_CSE(bit *retval, inet * val1, inet *val2);
inet_export str INETbroadcast(inet * retval, inet *val);
inet_export str INEThost(str *retval, inet *val);
inet_export str INETmasklen(int *retval, inet *val);
inet_export str INETsetmasklen(inet *retval, inet *val, int *mask);
inet_export str INETnetmask(inet *retval, inet *val);
inet_export str INEThostmask(inet *retval, inet *val);
inet_export str INETnetwork(inet *retval, inet *val);
inet_export str INETtext(str *retval, inet *val);
inet_export str INETabbrev(str *retval, inet *val);