36 lines
993 B
C
36 lines
993 B
C
/*
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* Copyright 1987, 1988, 1989 by the Massachusetts Institute of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* Include file for address comparison macros.
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*
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* from: addr_comp.h,v 4.0 89/01/23 09:57:44 jtkohl Exp $
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* $Id$
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*/
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#ifndef ADDR_COMP_DEFS
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#define ADDR_COMP_DEFS
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/*
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** Look boys and girls, a big kludge
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** We need to compare the two internet addresses in network byte order, not
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** local byte order. This is a *really really slow way of doing that*
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** But.....
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** .....it works
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** so we run with it
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**
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** long_less_than gets fed two (u_char *)'s....
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*/
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#define u_char_comp(x,y) \
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(((x)>(y))?(1):(((x)==(y))?(0):(-1)))
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#define long_less_than(x,y) \
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(u_char_comp((x)[0],(y)[0])?u_char_comp((x)[0],(y)[0]): \
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(u_char_comp((x)[1],(y)[1])?u_char_comp((x)[1],(y)[1]): \
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(u_char_comp((x)[2],(y)[2])?u_char_comp((x)[2],(y)[2]): \
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(u_char_comp((x)[3],(y)[3])))))
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#endif /* ADDR_COMP_DEFS */
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