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Annotation of 42BSD/lib/libc/inet/inet_lnaof.c, revision 1.1

1.1     ! root        1: /*     inet_lnaof.c    4.3     82/11/14        */
        !             2: 
        !             3: #include <sys/types.h>
        !             4: #include <netinet/in.h>
        !             5: 
        !             6: /*
        !             7:  * Return the local network address portion of an
        !             8:  * internet address; handles class a/b/c network
        !             9:  * number formats.
        !            10:  */
        !            11: inet_lnaof(in)
        !            12:        struct in_addr in;
        !            13: {
        !            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);
        !            22: }

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