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annotate include/SDL_types.h @ 1345:7f32b9bede06

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Fixes for Visual C++ 6.0
author Sam Lantinga <slouken@libsdl.org>
date Tue, 07 Feb 2006 18:36:54 +0000
parents 450721ad5436
children 1b5fbaf1d2c6
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /* General data types used by the SDL library */
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24
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25 #ifndef _SDL_types_h
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26 #define _SDL_types_h
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27
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28 #include <sys/types.h>
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29 #ifdef _MSC_VER
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30 /* FIXME!! */
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31 typedef unsigned int size_t;
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32 typedef size_t uintptr_t;
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33 #endif
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34
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35 /* The number of elements in an array */
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36 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
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37 #define SDL_TABLESIZE(table) SDL_arraysize(table)
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38
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39 /* Basic data types */
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40 typedef enum SDL_bool {
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41 SDL_FALSE = 0,
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42 SDL_TRUE = 1
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43 } SDL_bool;
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44
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45 #ifdef H_MMBASIC /* mmbasic.h (Tru64 MME) */
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46 /* Some of the basic types are already defined in mmbasic.h */
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47 typedef signed char Sint8;
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48 typedef signed short Sint16;
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49 typedef signed int Sint32;
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50 #else
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51 typedef unsigned char Uint8;
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52 typedef signed char Sint8;
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53 typedef unsigned short Uint16;
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54 typedef signed short Sint16;
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55 typedef unsigned int Uint32;
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56 typedef signed int Sint32;
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57 #endif
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58
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59 /* Figure out how to support 64-bit datatypes */
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60 #if !defined(__STRICT_ANSI__)
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61 #ifdef __osf__ /* Tru64 */
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62 #define SDL_HAS_64BIT_TYPE long
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63 #elif defined(__GNUC__) || defined(__MWERKS__) || defined(__SUNPRO_C) || defined(__DECC) || defined(__WATCOMC__)
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64 #define SDL_HAS_64BIT_TYPE long long
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65 #elif defined(_MSC_VER) /* VC++ */
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66 #define SDL_HAS_64BIT_TYPE __int64
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67 #endif
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68 #endif /* !__STRICT_ANSI__ */
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69
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70 /* The 64-bit type isn't available on EPOC/Symbian OS */
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71 #ifdef __SYMBIAN32__
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72 #undef SDL_HAS_64BIT_TYPE
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73 #endif
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74
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75 /* The 64-bit datatype isn't supported on all platforms */
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76 #ifdef SDL_HAS_64BIT_TYPE
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77 #ifndef H_MMBASIC
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78 typedef unsigned SDL_HAS_64BIT_TYPE Uint64;
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79 #endif
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80 typedef SDL_HAS_64BIT_TYPE Sint64;
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81 #else
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82 /* This is really just a hack to prevent the compiler from complaining */
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83 typedef struct {
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84 Uint32 hi;
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85 Uint32 lo;
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86 } Uint64, Sint64;
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87 #endif
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88
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89 /* Make sure the types really have the right sizes */
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90 #define SDL_COMPILE_TIME_ASSERT(name, x) \
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91 typedef int SDL_dummy_ ## name[(x) * 2 - 1]
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92
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93 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
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94 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
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95 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
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96 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
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97 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
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98 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
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99 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
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100 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
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101
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102 /* Check to make sure enums are the size of ints, for structure packing.
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103 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
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104 enums having the size of an int must be enabled.
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105 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
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106 */
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107 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
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108 #ifdef __MWERKS__
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109 #pragma enumsalwaysint on
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110 #endif
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111
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112 typedef enum {
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113 DUMMY_ENUM_VALUE
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114 } SDL_DUMMY_ENUM;
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115
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116 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
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117
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118 #endif