scoutos / prex-0.9.0 / include / sys / endian.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*-
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2 | * Copyright (c) 1987, 1991, 1993
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3 | * The Regents of the University of California. All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the University nor the names of its contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | *
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29 | * @(#)endian.h 8.1 (Berkeley) 6/10/93
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30 | */
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31 | |||
32 | #ifndef _SYS_ENDIAN_H_
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33 | #define _SYS_ENDIAN_H_
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34 | |||
35 | /*
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36 | * Define the order of 32-bit words in 64-bit words.
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37 | */
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38 | #define _QUAD_HIGHWORD 0 |
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39 | #define _QUAD_LOWWORD 1 |
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40 | |||
41 | /*
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42 | * Definitions for byte order, according to byte significance from low
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43 | * address to high.
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44 | */
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45 | #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ |
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46 | #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ |
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47 | #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ |
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48 | |||
49 | #include <machine/endian.h> |
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50 | #include <sys/cdefs.h> |
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51 | #include <sys/types.h> |
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52 | |||
53 | #define BYTE_ORDER _BYTE_ORDER
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54 | |||
55 | |||
56 | /*
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57 | * Macros for network/external number representation conversion.
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58 | */
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59 | #if BYTE_ORDER == BIG_ENDIAN && !defined(__lint__)
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60 | #define ntohl(x) (x)
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61 | #define ntohs(x) (x)
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62 | #define htonl(x) (x)
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63 | #define htons(x) (x)
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64 | |||
65 | #else /* LITTLE_ENDIAN || !defined(__lint__) */ |
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66 | |||
67 | __BEGIN_DECLS |
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68 | uint32_t htonl(uint32_t); |
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69 | uint16_t htons(uint16_t); |
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70 | uint32_t ntohl(uint32_t); |
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71 | uint16_t ntohs(uint16_t); |
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72 | __END_DECLS |
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73 | |||
74 | #endif /* LITTLE_ENDIAN || !defined(__lint__) */ |
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75 | |||
76 | #endif /* !_SYS_ENDIAN_H_ */ |