annotate pack.h @ 83:f028a84bc3f1

Fix an error
author David Demelier <markand@malikania.fr>
date Wed, 16 Nov 2011 21:40:33 +0100
parents 311eaa9d004c
children b1a084c030c8
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1 /*
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2 * Copyright (c) 2011, David Demelier <markand@malikania.fr>
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3 *
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4 * Permission to use, copy, modify, and/or distribute this software for any
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5 * purpose with or without fee is hereby granted, provided that the above
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6 * copyright notice and this permission notice appear in all copies.
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7 *
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8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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15 */
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16
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17 #ifndef _PACK_H_
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18 #define _PACK_H_
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19
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20 #include <stdarg.h>
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21
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22 #ifdef __cplusplus
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23 extern "C" {
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24 #endif
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25
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26 /*
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27 * Endian detection based on SDL_endian.h
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28 */
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29
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30 #undef PACK_HOST_BYTEORDER
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31
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32 #define PACK_LE 1234
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33 #define PACK_BE 4321
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34
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35 #if defined(__hppa__) || \
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36 defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
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37 (defined(__MIPS__) && defined(__MISPEB__)) || \
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38 defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
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39 defined(__sparc__)
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40 # define PACK_HOST_BYTEORDER PACK_BE
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41 #else
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42 # define PACK_HOST_BYTEORDER PACK_LE
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43 #endif
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44
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45 #define pack_swap16(x) \
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46 ((((x) >> 8) & 0x00FFL) | (((x) << 8) & 0xFF00L))
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47
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48 #define pack_swap32(x) ((((x) >> 24) & 0x000000FFL) \
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49 | (((x) >> 8) & 0x0000FF00L) \
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50 | (((x) << 8) & 0x00FF0000L) \
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51 | (((x) << 24) & 0xFF000000L))
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52
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53 #define pack_swap64(x) (((uint64_t) \
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54 ((uint32_t) pack_swap32((uint32_t) (((x) << 32) >> 32))) << 32) \
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55 | (uint32_t) pack_swap32((uint32_t) ((x) >> 32)))
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57 int pack_write(int, const char *, const char *, ...);
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58 int pack_vwrite(int, const char *, const char *, va_list);
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59 int pack_fwrite(int, FILE *, const char *, ...);
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60 int pack_vfwrite(int, FILE *, const char *, va_list);
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62 int pack_read(int, const char *, const char *, ...);
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63 int pack_vread(int, const char *, const char *, va_list);
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64 int pack_fread(int, FILE *, const char *, ...);
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65 int pack_vfread(int, FILE *, const char *, va_list);
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67 #ifdef __cplusplus
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68 }
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69 #endif
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71 #endif /* _PACK_H_ */