[unix-history] / usr / src / lib / libc / net / inet_lnaof.c

/*	inet_lnaof.c	4.3	82/11/14	*/

#include <sys/types.h>
#include <netinet/in.h>

/*
 * Return the local network address portion of an
 * internet address; handles class a/b/c network
 * number formats.
 */
inet_lnaof(in)
	struct in_addr in;
{
	register u_long i = ntohl(in.s_addr);

	if (IN_CLASSA(i))
		return ((i)&IN_CLASSA_HOST);
	else if (IN_CLASSB(i))
		return ((i)&IN_CLASSB_HOST);
	else
		return ((i)&IN_CLASSC_HOST);
}
Commit	Line	Data
056d5bbd	1	/* inet_lnaof.c 4.3 82/11/14 */
a6792f09 SL	2
a6792f09 SL	3	#include <sys/types.h>
056d5bbd	4	#include <netinet/in.h>
a6792f09 SL	5
	6	/*
	7	* Return the local network address portion of an
	8	* internet address; handles class a/b/c network
	9	* number formats.
	10	*/
3a3b7ace	11	inet_lnaof(in)
a6792f09 SL	12	struct in_addr in;
a6792f09 SL	13	{
056d5bbd SL	14	register u_long i = ntohl(in.s_addr);
	15
	16	if (IN_CLASSA(i))
	17	return ((i)&IN_CLASSA_HOST);
	18	else if (IN_CLASSB(i))
	19	return ((i)&IN_CLASSB_HOST);
	20	else
	21	return ((i)&IN_CLASSC_HOST);
a6792f09	22	}