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ntohl(3) Library Functions Manual ntohl(3) NAME ntohl - Converts an unsigned 32-bit integer from Internet network byte order to host byte order LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <arpa/inet.h> in_addr_t ntohl ( in_addr_t netint) ; STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: ntohl(): XPG4-UNIX Refer to the standards(5) reference page for more information about in- dustry standards and associated tags. PARAMETERS Specifies a 32-bit integer in network-byte order. DESCRIPTION The ntohl() (network-to-host long) function converts an unsigned 32-bit integer from Internet network-byte order to host-byte order. The Internet network requires address and port reference data in net- work-byte order. You can use the ntohl() function to convert Internet network address and port data to host byte-ordered integers. RETURN VALUES The ntohl() function returns a 32-bit integer in host-byte order. ERRORS Current industry standards do not define error values for the ntohl() function. RELATED INFORMATION Functions: endhostent(3), endservent(3), ntohs(3), htonl(3), htons(3). Standards: standards(5). Network Programmer's Guide delim off ntohl(3)