L3TOL(3) Library Functions Manual L3TOL(3)NAME
l3tol, ltol3 - convert between 3-byte and long integers (2BSD)
SYNOPSIS
l3tol(lp, cp, n)
long *lp;
char *cp;
ltol3(cp, lp, n)
char *cp;
long *lp;
DESCRIPTION
L3tol converts a list of n three-byte integers packed into a character string pointed to by cp into a list of long integers pointed to by
lp.
Ltol3 performs the inverse conversion from long integers (lp) to three-byte integers (cp).
These functions are useful for file-system maintenance under 2BSD where disk addresses within inodes are three bytes long.
SEE ALSO fs(5)BUGS
l3tol and ltol3 are unique to the PDP-11 and 2BSD; their use is discouraged.
3rd Berkeley DistributionL3TOL(3)
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BYTEORDER(3) BSD Library Functions Manual BYTEORDER(3)NAME
htonl, htons, ntohl, ntohs -- convert values between host and network byte order
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <arpa/inet.h>
uint32_t
htonl(uint32_t host32);
uint16_t
htons(uint16_t host16);
uint32_t
ntohl(uint32_t net32);
uint16_t
ntohs(uint16_t net16);
DESCRIPTION
These routines convert 16 and 32 bit quantities between network byte order and host byte order.
On machines which have a byte order which is the same as the network order, these routines are defined as macros that expand to the value of
their argument.
These routines are most often used in conjunction with Internet addresses and ports as returned by gethostbyname(3) and getservent(3).
SEE ALSO bswap(3), gethostbyname(3), getservent(3)STANDARDS
The described functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
The byteorder functions appeared in 4.2BSD.
BUGS
The `l' and `s' suffixes in the names are not meaningful in machines where long integers are not 32 bits.
BSD May 3, 2011 BSD
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