1 | /* |
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2 | * libcucul Canvas for ultrafast compositing of Unicode letters |
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3 | * libcaca Colour ASCII-Art library |
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4 | * Copyright (c) 2006 Sam Hocevar <sam@zoy.org> |
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5 | * All Rights Reserved |
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6 | * |
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7 | * $Id: common.h 1303 2006-11-08 13:05:42Z sam $ |
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8 | * |
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9 | * This library is free software; you can redistribute it and/or |
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10 | * modify it under the terms of the Do What The Fuck You Want To |
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11 | * Public License, Version 2, as published by Sam Hocevar. See |
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12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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13 | */ |
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14 | |
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15 | /* |
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16 | * This file contains replacements for commonly found object types and |
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17 | * function prototypes that are sometimes missing. |
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18 | */ |
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19 | |
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20 | #if defined(HAVE_INTTYPES_H) && !defined(__KERNEL__) |
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21 | # include <inttypes.h> |
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22 | #else |
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23 | typedef signed char int8_t; |
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24 | typedef signed short int16_t; |
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25 | typedef signed long int int32_t; |
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26 | |
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27 | typedef unsigned char uint8_t; |
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28 | typedef unsigned short uint16_t; |
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29 | typedef unsigned long int uint32_t; |
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30 | |
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31 | typedef long int intptr_t; |
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32 | typedef unsigned long int uintptr_t; |
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33 | #endif |
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34 | |
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35 | #if defined(HAVE_HTONS) |
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36 | # if defined(HAVE_ARPA_INET_H) |
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37 | # include <arpa/inet.h> |
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38 | # elif defined(HAVE_NETINET_IN_H) |
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39 | # include <netinet/in.h> |
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40 | # endif |
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41 | # define hton16 htons |
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42 | # define hton32 htonl |
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43 | #else |
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44 | # if defined(HAVE_ENDIAN_H) |
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45 | # include <endian.h> |
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46 | # endif |
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47 | static inline uint16_t hton16(uint16_t x) |
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48 | { |
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49 | /* This is compile-time optimised with at least -O1 or -Os */ |
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50 | #if defined(HAVE_ENDIAN_H) |
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51 | if(__BYTE_ORDER == __BIG_ENDIAN) |
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52 | #else |
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53 | uint32_t const dummy = 0x12345678; |
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54 | if(*(uint8_t const *)&dummy == 0x12) |
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55 | #endif |
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56 | return x; |
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57 | else |
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58 | return (x >> 8) | (x << 8); |
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59 | } |
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60 | |
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61 | static inline uint32_t hton32(uint32_t x) |
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62 | { |
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63 | /* This is compile-time optimised with at least -O1 or -Os */ |
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64 | #if defined(HAVE_ENDIAN_H) |
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65 | if(__BYTE_ORDER == __BIG_ENDIAN) |
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66 | #else |
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67 | uint32_t const dummy = 0x12345678; |
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68 | if(*(uint8_t const *)&dummy == 0x12) |
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69 | #endif |
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70 | return x; |
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71 | else |
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72 | return (x >> 24) | ((x >> 8) & 0x0000ff00) |
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73 | | ((x << 8) & 0x00ff0000) | (x << 24); |
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74 | } |
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75 | #endif |
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76 | |
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77 | #if defined(__KERNEL__) |
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78 | #undef HAVE_ERRNO_H |
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79 | #endif |
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