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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH inet_addr 3XNET "10 Jun 2002" "SunOS 5.11" "X/Open Networking Services Library Functions" .SH NAME inet_addr, inet_network, inet_makeaddr, inet_lnaof, inet_netof, inet_ntoa \- Internet address manipulation .SH SYNOPSIS .LP .nf \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lxnet\fR [ \fIlibrary\fR ... ] #include \fBin_addr_t\fR \fBinet_addr\fR(\fBconst char *\fR\fIcp\fR); .fi .LP .nf \fBin_addr_t\fR \fBinet_lnaof\fR(\fBstruct in_addr\fR \fIin\fR); .fi .LP .nf \fBstruct in_addr\fR \fBinet_makeaddr\fR(\fBin_addr_t\fR \fInet\fR, \fBin_addr_t\fR \fIlna\fR); .fi .LP .nf \fBin_addr_t\fR \fBinet_netof\fR(\fBstruct in_addr\fR \fIin\fR); .fi .LP .nf \fBin_addr_t\fR \fBinet_network\fR(\fBconst char *\fR\fIcp\fR); .fi .LP .nf \fBchar *\fR\fBinet_ntoa\fR(\fBstruct in_addr\fR \fIin\fR); .fi .SH DESCRIPTION .sp .LP The \fBinet_addr()\fR function converts the string pointed to by \fIcp\fR, in the Internet standard dot notation, to an integer value suitable for use as an Internet address. .sp .LP The \fBinet_lnaof()\fR function takes an Internet host address specified by \fIin\fR and extracts the local network address part, in host byte order. .sp .LP The \fBinet_makeaddr()\fR function takes the Internet network number specified by \fInet\fR and the local network address specified by \fIlna\fR, both in host byte order, and constructs an Internet address from them. .sp .LP The \fBinet_netof()\fR function takes an Internet host address specified by \fIin\fR and extracts the network number part, in host byte order. .sp .LP The \fBinet_network()\fR function converts the string pointed to by \fIcp\fR, in the Internet standard dot notation, to an integer value suitable for use as an Internet network number. .sp .LP The \fBinet_ntoa()\fR function converts the Internet host address specified by \fIin\fR to a string in the Internet standard dot notation. .sp .LP All Internet addresses are returned in network order (bytes ordered from left to right). .sp .LP Values specified using dot notation take one of the following forms: .sp .ne 2 .mk .na \fB\fBa.b.c.d\fR\fR .ad .RS 11n .rt When four parts are specified, each is interpreted as a byte of data and assigned, from left to right, to the four bytes of an Internet address. .RE .sp .ne 2 .mk .na \fB\fBa.b.c\fR\fR .ad .RS 11n .rt When a three-part address is specified, the last part is interpreted as a 16-bit quantity and placed in the rightmost two bytes of the network address. This makes the three-part address format convenient for specifying Class B network addresses as \fB128.\fR\fInet\fR.\fIhost\fR. .RE .sp .ne 2 .mk .na \fB\fBa.b\fR\fR .ad .RS 11n .rt When a two-part address is supplied, the last part is interpreted as a 24-bit quantity and placed in the rightmost three bytes of the network address. This makes the two-part address format convenient for specifying Class A network addresses as \fInet\fR\fB\&.\fR\fIhost\fR. .RE .sp .ne 2 .mk .na \fB\fBa\fR\fR .ad .RS 11n .rt When only one part is given, the value is stored directly in the network address without any byte rearrangement. .RE .sp .LP All numbers supplied as parts in dot notation may be decimal, octal, or hexadecimal, that is, a leading 0x or 0X implies hexadecimal, as specified in the \fIISO C\fR standard; otherwise, a leading 0 implies octal; otherwise, the number is interpreted as decimal. .SH USAGE .sp .LP The return value of \fBinet_ntoa()\fR may point to static data that may be overwritten by subsequent calls to \fBinet_ntoa()\fR. .SH RETURN VALUES .sp .LP Upon successful completion, \fBinet_addr()\fR returns the Internet address. Otherwise, it returns (\fBin_addr_t\fR)(\(mi1). .sp .LP Upon successful completion, \fBinet_network()\fR returns the converted Internet network number. Otherwise, it returns (\fBin_addr_t\fR)(\(mi1). .sp .LP The \fBinet_makeaddr()\fR function returns the constructed Internet address. .sp .LP The \fBinet_lnaof()\fR function returns the local network address part. .sp .LP The \fBinet_netof()\fR function returns the network number. .sp .LP The \fBinet_ntoa()\fR function returns a pointer to the network address in Internet-standard dot notation. .SH ERRORS .sp .LP No errors are defined. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPEATTRIBUTE VALUE _ Interface StabilityStandard _ MT-LevelMT-Safe .TE .SH SEE ALSO .sp .LP \fBendhostent\fR(3XNET), \fBendnetent\fR(3XNET), \fBattributes\fR(5), \fBstandards\fR(5)