binio.c revision 290001 
1/*
2 * /src/NTP/ntp4-dev/libntp/binio.c,v 4.5 2005/04/16 17:32:10 kardel RELEASE_20050508_A
3 *
4 * binio.c,v 4.5 2005/04/16 17:32:10 kardel RELEASE_20050508_A
5 *
6 * $Created: Sun Jul 20 12:55:33 1997 $
7 *
8 * Copyright (c) 1997-2005 by Frank Kardel <kardel <AT> ntp.org>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the author nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 */
35
36#include <config.h>
37#include "binio.h"
38
39long
40get_lsb_short(
41	unsigned char **bufpp
42	)
43{
44  long retval;
45
46  retval  = *((*bufpp)++);
47  retval |= *((*bufpp)++) << 8;
48
49  return (retval & 0x8000) ? (~0xFFFF | retval) : retval;
50}
51
52void
53put_lsb_short(
54	unsigned char **bufpp,
55	long val
56	)
57{
58  *((*bufpp)++) = (unsigned char) (val        & 0xFF);
59  *((*bufpp)++) = (unsigned char) ((val >> 8) & 0xFF);
60}
61
62long
63get_lsb_long(
64	unsigned char **bufpp
65	)
66{
67  long retval;
68
69  retval  = *((*bufpp)++);
70  retval |= *((*bufpp)++) << 8;
71  retval |= *((*bufpp)++) << 16;
72  retval |= (u_long)*((*bufpp)++) << 24;
73
74  return retval;
75}
76
77void
78put_lsb_long(
79	unsigned char **bufpp,
80	long val
81	)
82{
83  *((*bufpp)++) = (unsigned char)(val         & 0xFF);
84  *((*bufpp)++) = (unsigned char)((val >> 8)  & 0xFF);
85  *((*bufpp)++) = (unsigned char)((val >> 16) & 0xFF);
86  *((*bufpp)++) = (unsigned char)((val >> 24) & 0xFF);
87}
88
89long
90get_msb_short(
91	unsigned char **bufpp
92	)
93{
94  long retval;
95
96  retval  = *((*bufpp)++) << 8;
97  retval |= *((*bufpp)++);
98
99  return (retval & 0x8000) ? (~0xFFFF | retval) : retval;
100}
101
102void
103put_msb_short(
104	unsigned char **bufpp,
105	long val
106	)
107{
108  *((*bufpp)++) = (unsigned char)((val >> 8) & 0xFF);
109  *((*bufpp)++) = (unsigned char)( val       & 0xFF);
110}
111
112long
113get_msb_long(
114	unsigned char **bufpp
115	)
116{
117  long retval;
118
119  retval  = (u_long)*((*bufpp)++) << 24;
120  retval |= *((*bufpp)++) << 16;
121  retval |= *((*bufpp)++) << 8;
122  retval |= *((*bufpp)++);
123
124  return retval;
125}
126
127void
128put_msb_long(
129	unsigned char **bufpp,
130	long val
131	)
132{
133  *((*bufpp)++) = (unsigned char)((val >> 24) & 0xFF);
134  *((*bufpp)++) = (unsigned char)((val >> 16) & 0xFF);
135  *((*bufpp)++) = (unsigned char)((val >> 8 ) & 0xFF);
136  *((*bufpp)++) = (unsigned char)( val        & 0xFF);
137}
138
139/*
140 * binio.c,v
141 * Revision 4.2  1999/02/21 12:17:34  kardel
142 * 4.91f reconcilation
143 *
144 * Revision 4.1  1998/06/28 16:47:50  kardel
145 * added {get,put}_msb_{short,long} functions
146 *
147 * Revision 4.0  1998/04/10 19:46:16  kardel
148 * Start 4.0 release version numbering
149 *
150 * Revision 1.1  1998/04/10 19:27:46  kardel
151 * initial NTP VERSION 4 integration of PARSE with GPS166 binary support
152 *
153 * Revision 1.1  1997/10/06 21:05:46  kardel
154 * new parse structure
155 *
156 */
157