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46 .TH INET.H 3HEAD "Aug 30, 2002"
48 inet.h, inet \- definitions for internet operations
52 \fB#include <arpa/inet.h>\fR
58 The <\fBarpa/inet.h\fR> header defines the type \fBin_port_t\fR, the type
59 \fBin_addr_t\fR, and the \fBin_addr\fR structure, as described in
63 Inclusion of the <\fBarpa/inet.h\fR> header may also make visible all symbols
64 from \fBin.h\fR(3HEAD).
67 The following are declared as functions, and may also be defined as macros:
71 in_addr_t inet_addr(const char *);
72 in_addr_t inet_lnaof(struct in_addr);
73 struct in_addr inet_makeaddr(in_addr_t, in_addr_t);
74 in_addr_t inet_netof(struct in_addr);
75 in_addr_t inet_network(const char *);
76 char *inet_ntoa(struct in_addr);
83 For applications that do not require standard-conforming behavior (those that
84 use the socket interfaces described in section 3N of the reference manual; see
85 \fBIntro\fR(3) and \fBstandards\fR(5)), the following may be declared as
86 functions, or defined as macros, or both:
90 uint32_t htonl(uint32_t);
91 uint16_t htons(uint16_t);
92 uint32_t ntohl(uint32_t);
93 uint16_t ntohs(uint16_t);
97 .SS "Standard conforming"
100 For applications that require standard-conforming behavior (those that use the
101 socket interfaces described in section 3XN of the reference manual; see
102 \fBIntro\fR(3) and \fBstandards\fR(5)), the following may be declared as
103 functions, or defined as macros, or both:
107 in_addr_t htonl(in_addr_t);
108 in_port_t htons(in_port_t);
109 in_addr_t ntohl(in_addr_t);
110 in_port_t ntohs(in_port_t);
117 See \fBattributes\fR(5) for descriptions of the following attributes:
125 ATTRIBUTE TYPE ATTRIBUTE VALUE
127 Interface Stability Standard
133 \fBIntro\fR(3), \fBhtonl\fR(3SOCKET), \fBhtonl\fR(3XNET),
134 \fBinet_addr\fR(3SOCKET), \fBinet_addr\fR(3XNET), \fBin.h\fR(3HEAD),
135 \fBattributes\fR(5), \fBstandards\fR(5)