41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
|
|
* Copyright 1988 by the Massachusetts Institute of Technology.
|
|
* For copying and distribution information, please see the file
|
|
* <Copyright.MIT>.
|
|
*
|
|
* Comparison macros to emulate LSBFIRST comparison results of network
|
|
* byte-order quantities
|
|
*
|
|
* from: lsb_addr_comp.h,v 4.0 89/01/23 15:44:46 jtkohl Exp $
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef LSB_ADDR_COMP_DEFS
|
|
#define LSB_ADDR_COMP_DEFS
|
|
|
|
#include "osconf.h"
|
|
|
|
#ifdef LSBFIRST
|
|
#define lsb_net_ulong_less(x,y) ((x < y) ? -1 : ((x > y) ? 1 : 0))
|
|
#define lsb_net_ushort_less(x,y) ((x < y) ? -1 : ((x > y) ? 1 : 0))
|
|
#else
|
|
/* MSBFIRST */
|
|
#define u_char_comp(x,y) \
|
|
(((x)>(y))?(1):(((x)==(y))?(0):(-1)))
|
|
/* This is gross, but... */
|
|
#define lsb_net_ulong_less(x, y) long_less_than((u_char *)&x, (u_char *)&y)
|
|
#define lsb_net_ushort_less(x, y) short_less_than((u_char *)&x, (u_char *)&y)
|
|
|
|
#define long_less_than(x,y) \
|
|
(u_char_comp((x)[3],(y)[3])?u_char_comp((x)[3],(y)[3]): \
|
|
(u_char_comp((x)[2],(y)[2])?u_char_comp((x)[2],(y)[2]): \
|
|
(u_char_comp((x)[1],(y)[1])?u_char_comp((x)[1],(y)[1]): \
|
|
(u_char_comp((x)[0],(y)[0])))))
|
|
#define short_less_than(x,y) \
|
|
(u_char_comp((x)[1],(y)[1])?u_char_comp((x)[1],(y)[1]): \
|
|
(u_char_comp((x)[0],(y)[0])))
|
|
|
|
#endif /* LSBFIRST */
|
|
|
|
#endif /* LSB_ADDR_COMP_DEFS */
|