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1357
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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 /* This is a general header that includes C language support */
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24
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25 #ifndef _SDL_stdinc_h
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26 #define _SDL_stdinc_h
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27
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28 #include "SDL_config.h"
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29
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30 /* AIX requires this to be the first thing in the file. */
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31 #ifndef __GNUC__
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32 # if HAVE_ALLOCA_H
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33 # include <alloca.h>
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34 # else
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35 # ifdef _AIX
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36 #pragma alloca
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37 # else
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38 # ifndef alloca /* predefined by HP cc +Olibcalls */
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39 char *alloca ();
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40 # endif
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41 # endif
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42 # endif
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43 #endif
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44
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45 #if HAVE_SYS_TYPES_H
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46 #include <sys/types.h>
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47 #endif
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48 #if HAVE_STDIO_H
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49 #include <stdio.h>
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50 #endif
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51 #if STDC_HEADERS
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52 # include <stdlib.h>
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53 # include <stddef.h>
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54 # include <stdarg.h>
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55 #else
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56 # if HAVE_STDLIB_H
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57 # include <stdlib.h>
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58 # endif
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59 # if HAVE_STDARG_H
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60 # include <stdarg.h>
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61 # endif
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62 #endif
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63 #if HAVE_MALLOC_H
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64 # include <malloc.h>
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65 #endif
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66 #if HAVE_STRING_H
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67 # if !STDC_HEADERS && HAVE_MEMORY_H
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68 # include <memory.h>
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69 # endif
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70 # include <string.h>
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71 #endif
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72 #if HAVE_STRINGS_H
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73 # include <strings.h>
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74 #endif
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75 #if HAVE_INTTYPES_H
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76 # include <inttypes.h>
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77 #else
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78 # if HAVE_STDINT_H
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79 # include <stdint.h>
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80 # endif
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81 #endif
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82 #if HAVE_CTYPE_H
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83 # include <ctype.h>
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84 #endif
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85
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86 /* The number of elements in an array */
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87 #define SDL_arraysize(array) (sizeof(array)/sizeof(array[0]))
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88 #define SDL_TABLESIZE(table) SDL_arraysize(table)
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89
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90 /* Basic data types */
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91 typedef enum SDL_bool {
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92 SDL_FALSE = 0,
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93 SDL_TRUE = 1
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94 } SDL_bool;
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95
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96 typedef int8_t Sint8;
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97 typedef uint8_t Uint8;
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98 typedef int16_t Sint16;
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99 typedef uint16_t Uint16;
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100 typedef int32_t Sint32;
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101 typedef uint32_t Uint32;
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102
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103 #ifdef SDL_HAS_64BIT_TYPE
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104 typedef int64_t Sint64;
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105 typedef uint64_t Uint64;
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106 #else
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107 /* This is really just a hack to prevent the compiler from complaining */
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108 typedef struct {
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109 Uint32 hi;
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110 Uint32 lo;
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111 } Uint64, Sint64;
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112 #endif
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113
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114 /* Make sure the types really have the right sizes */
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115 #define SDL_COMPILE_TIME_ASSERT(name, x) \
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116 typedef int SDL_dummy_ ## name[(x) * 2 - 1]
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117
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118 SDL_COMPILE_TIME_ASSERT(uint8, sizeof(Uint8) == 1);
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119 SDL_COMPILE_TIME_ASSERT(sint8, sizeof(Sint8) == 1);
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120 SDL_COMPILE_TIME_ASSERT(uint16, sizeof(Uint16) == 2);
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121 SDL_COMPILE_TIME_ASSERT(sint16, sizeof(Sint16) == 2);
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122 SDL_COMPILE_TIME_ASSERT(uint32, sizeof(Uint32) == 4);
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123 SDL_COMPILE_TIME_ASSERT(sint32, sizeof(Sint32) == 4);
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124 SDL_COMPILE_TIME_ASSERT(uint64, sizeof(Uint64) == 8);
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125 SDL_COMPILE_TIME_ASSERT(sint64, sizeof(Sint64) == 8);
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126
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127 /* Check to make sure enums are the size of ints, for structure packing.
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128 For both Watcom C/C++ and Borland C/C++ the compiler option that makes
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129 enums having the size of an int must be enabled.
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130 This is "-b" for Borland C/C++ and "-ei" for Watcom C/C++ (v11).
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131 */
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132 /* Enable enums always int in CodeWarrior (for MPW use "-enum int") */
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133 #ifdef __MWERKS__
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134 #pragma enumsalwaysint on
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135 #endif
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136
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137 typedef enum {
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138 DUMMY_ENUM_VALUE
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139 } SDL_DUMMY_ENUM;
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140
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141 SDL_COMPILE_TIME_ASSERT(enum, sizeof(SDL_DUMMY_ENUM) == sizeof(int));
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142
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143
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144 #include "begin_code.h"
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145 /* Set up for C function definitions, even when using C++ */
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146 #ifdef __cplusplus
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147 extern "C" {
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148 #endif
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149
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150 #if HAVE_MALLOC
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151 #define SDL_malloc malloc
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152 #else
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153 extern DECLSPEC void * SDLCALL SDL_malloc(size_t size);
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154 #endif
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155
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156 #if HAVE_CALLOC
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157 #define SDL_calloc calloc
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158 #else
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159 extern DECLSPEC void * SDLCALL SDL_calloc(size_t nmemb, size_t size);
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160 #endif
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161
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162 #if HAVE_REALLOC
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163 #define SDL_realloc realloc
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164 #else
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165 extern DECLSPEC void * SDLCALL SDL_realloc(void *mem, size_t size);
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166 #endif
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167
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168 #if HAVE_FREE
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169 #define SDL_free free
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170 #else
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171 extern DECLSPEC void SDLCALL SDL_free(void *mem);
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172 #endif
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173
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174 #if HAVE_ALLOCA
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175 #define SDL_stack_alloc(type, count) (type*)alloca(sizeof(type)*count)
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176 #define SDL_stack_free(data)
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177 #else
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178 #define SDL_stack_alloc(type, count) (type*)SDL_malloc(sizeof(type)*count)
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179 #define SDL_stack_free(data) SDL_free(data)
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180 #endif
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181
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182 #if HAVE_GETENV
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183 #define SDL_getenv getenv
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184 #else
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185 extern DECLSPEC char * SDLCALL SDL_getenv(const char *name);
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186 #endif
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187
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188 #if HAVE_PUTENV
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189 #define SDL_putenv putenv
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190 #else
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191 extern DECLSPEC int SDLCALL SDL_putenv(const char *variable);
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192 #endif
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193
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194 #if HAVE_QSORT
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195 #define SDL_qsort qsort
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196 #else
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197 extern DECLSPEC void SDLCALL SDL_qsort(void *base, size_t nmemb, size_t size,
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198 int (*compare)(const void *, const void *));
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199 #endif
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200
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201 #if HAVE_ABS
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202 #define SDL_abs abs
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203 #else
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204 #define SDL_abs(X) ((X) < 0 ? -(X) : (X))
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205 #endif
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206
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207 #if HAVE_CTYPE_H
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208 #define SDL_isdigit(X) isdigit(X)
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209 #define SDL_isspace(X) isspace(X)
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210 #define SDL_toupper(X) toupper(X)
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211 #define SDL_tolower(X) tolower(X)
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212 #else
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213 #define SDL_isdigit(X) (((X) >= '0') && ((X) <= '9'))
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214 #define SDL_isspace(X) (((X) == ' ') || ((X) == '\t') || ((X) == '\r') || ((X) == '\n'))
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215 #define SDL_toupper(X) (((X) >= 'a') && ((X) <= 'z') ? ('A'+((X)-'a')) : (X))
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216 #define SDL_tolower(X) (((X) >= 'A') && ((X) <= 'Z') ? ('a'+((X)-'A')) : (X))
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217 #endif
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218
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219 #if HAVE_MEMSET
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220 #define SDL_memset memset
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221 #else
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222 extern DECLSPEC void * SDLCALL SDL_memset(void *dst, int c, size_t len);
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223 #endif
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224
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225 #if defined(__GNUC__) && defined(i386)
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226 #define SDL_memset4(dst, val, len) \
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227 do { \
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228 int u0, u1, u2; \
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229 __asm__ __volatile__ ( \
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230 "cld\n\t" \
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231 "rep ; stosl\n\t" \
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232 : "=&D" (u0), "=&a" (u1), "=&c" (u2) \
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233 : "0" (dst), "1" (val), "2" ((Uint32)(len)) \
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234 : "memory" ); \
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235 } while(0)
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236 #endif
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237 #ifndef SDL_memset4
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238 #define SDL_memset4(dst, val, len) \
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239 do { \
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240 unsigned _count = (len); \
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241 unsigned _n = (_count + 3) / 4; \
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242 Uint32 *_p = (Uint32 *)(dst); \
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243 Uint32 _val = (val); \
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244 switch (_count % 4) { \
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245 case 0: do { *_p++ = _val; \
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246 case 3: *_p++ = _val; \
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247 case 2: *_p++ = _val; \
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248 case 1: *_p++ = _val; \
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249 } while ( --_n ); \
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250 } \
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251 } while(0)
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252 #endif
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253
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254 #if defined(__GNUC__) && defined(i386)
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255 #define SDL_memcpy(dst, src, len) \
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256 do { \
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257 int u0, u1, u2; \
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258 __asm__ __volatile__ ( \
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259 "cld\n\t" \
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260 "rep ; movsl\n\t" \
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261 "testb $2,%b4\n\t" \
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262 "je 1f\n\t" \
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263 "movsw\n" \
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264 "1:\ttestb $1,%b4\n\t" \
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265 "je 2f\n\t" \
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266 "movsb\n" \
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267 "2:" \
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268 : "=&c" (u0), "=&D" (u1), "=&S" (u2) \
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269 : "0" ((unsigned)(len)/4), "q" (len), "1" (dst),"2" (src) \
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270 : "memory" ); \
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271 } while(0)
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272 #endif
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273 #ifndef SDL_memcpy
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274 #if HAVE_MEMCPY
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275 #define SDL_memcpy memcpy
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276 #elif HAVE_BCOPY
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277 #define SDL_memcpy(d, s, n) bcopy((s), (d), (n))
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278 #else
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279 extern DECLSPEC void * SDLCALL SDL_memcpy(void *dst, const void *src, size_t len);
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280 #endif
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281 #endif
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282
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283 #if defined(__GNUC__) && defined(i386)
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284 #define SDL_memcpy4(dst, src, len) \
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285 do { \
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286 int ecx, edi, esi; \
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287 __asm__ __volatile__ ( \
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288 "cld\n\t" \
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289 "rep ; movsl" \
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290 : "=&c" (ecx), "=&D" (edi), "=&S" (esi) \
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291 : "0" ((unsigned)(len)), "1" (dst), "2" (src) \
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292 : "memory" ); \
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293 } while(0)
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294 #endif
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295 #ifndef SDL_memcpy4
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296 #define SDL_memcpy4(dst, src, len) SDL_memcpy(dst, src, (len) << 2)
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297 #endif
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298
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299 #if defined(__GNUC__) && defined(i386)
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300 #define SDL_revcpy(dst, src, len) \
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301 do { \
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302 int u0, u1, u2; \
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303 char *dstp = (char *)(dst); \
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304 char *srcp = (char *)(src); \
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305 int n = (len); \
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306 if ( n >= 4 ) { \
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307 __asm__ __volatile__ ( \
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308 "std\n\t" \
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309 "rep ; movsl\n\t" \
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310 : "=&c" (u0), "=&D" (u1), "=&S" (u2) \
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311 : "0" (n >> 2), \
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312 "1" (dstp+(n-4)), "2" (srcp+(n-4)) \
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313 : "memory" ); \
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314 } \
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315 switch (n & 3) { \
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316 case 3: dstp[2] = srcp[2]; \
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317 case 2: dstp[1] = srcp[1]; \
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318 case 1: dstp[0] = srcp[0]; \
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319 break; \
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320 default: \
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321 break; \
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322 } \
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323 } while(0)
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324 #endif
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325 #ifndef SDL_revcpy
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326 extern DECLSPEC void * SDLCALL SDL_revcpy(void *dst, const void *src, size_t len);
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327 #endif
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328
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329 #if HAVE_MEMMOVE
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330 #define SDL_memmove memmove
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331 #elif HAVE_BCOPY
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332 #define SDL_memmove(d, s, n) bcopy((s), (d), (n))
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333 #else
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334 #define SDL_memmove(dst, src, len) \
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335 do { \
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336 if ( dst < src ) { \
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337 SDL_memcpy(dst, src, len); \
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338 } else { \
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339 SDL_revcpy(dst, src, len); \
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340 } \
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341 } while(0)
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342 #endif
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343
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344 #if HAVE_MEMCMP
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345 #define SDL_memcmp memcmp
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346 #else
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347 extern DECLSPEC int SDLCALL SDL_memcmp(const void *s1, const void *s2, size_t len);
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348 #endif
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349
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350 #if HAVE_STRLEN
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351 #define SDL_strlen strlen
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352 #else
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353 extern DECLSPEC size_t SDLCALL SDL_strlen(const char *string);
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354 #endif
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355
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356 #if HAVE_STRCPY
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357 #define SDL_strcpy strcpy
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358 #else
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359 extern DECLSPEC char * SDLCALL SDL_strcpy(char *dst, const char *src);
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360 #endif
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361
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362 #if HAVE_STRNCPY
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363 #define SDL_strncpy strncpy
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364 #else
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365 extern DECLSPEC char * SDLCALL SDL_strncpy(char *dst, const char *src, size_t maxlen);
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366 #endif
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367
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368 #if HAVE_STRCAT
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369 #define SDL_strcat strcat
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370 #else
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371 #define SDL_strcat(dst, src) (SDL_strcpy(dst+SDL_strlen(dst), src), dst)
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372 #endif
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373
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374 #if HAVE_STRNCAT
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375 #define SDL_strncat strncat
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376 #else
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377 #define SDL_strncat(dst, src, n) (SDL_strncpy(dst+SDL_strlen(dst), src, n), dst)
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378 #endif
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379
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380 #if HAVE_STRDUP
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381 #define SDL_strdup strdup
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382 #else
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383 extern DECLSPEC char * SDLCALL SDL_strdup(const char *string);
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384 #endif
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385
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386 #if HAVE__STRREV
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387 #define SDL_strrev _strrev
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388 #else
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389 extern DECLSPEC char * SDLCALL SDL_strrev(char *string);
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390 #endif
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391
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392 #if HAVE__STRUPR
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393 #define SDL_strupr _strupr
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394 #else
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395 extern DECLSPEC char * SDLCALL SDL_strupr(char *string);
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396 #endif
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397
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398 #if HAVE__STRLWR
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399 #define SDL_strlwr _strlwr
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400 #else
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401 extern DECLSPEC char * SDLCALL SDL_strlwr(char *string);
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402 #endif
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403
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404 #if HAVE_STRCHR
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405 #define SDL_strchr strchr
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406 #elif HAVE_INDEX
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407 #define SDL_strchr index
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408 #else
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409 extern DECLSPEC char * SDLCALL SDL_strchr(const char *string, int c);
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410 #endif
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411
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412 #if HAVE_STRRCHR
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413 #define SDL_strrchr strrchr
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414 #elif HAVE_RINDEX
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415 #define SDL_strrchr rindex
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416 #else
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417 extern DECLSPEC char * SDLCALL SDL_strrchr(const char *string, int c);
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418 #endif
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419
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420 #if HAVE_STRSTR
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421 #define SDL_strstr strstr
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422 #else
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423 extern DECLSPEC char * SDLCALL SDL_strstr(const char *haystack, const char *needle);
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424 #endif
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425
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426 #if HAVE_ITOA
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427 #define SDL_itoa itoa
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428 #else
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429 #define SDL_itoa(value, string, radix) SDL_ltoa((long)value, string, radix)
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430 #endif
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431
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432 #if HAVE__LTOA
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433 #define SDL_ltoa _ltoa
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434 #else
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435 extern DECLSPEC char * SDLCALL SDL_ltoa(long value, char *string, int radix);
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436 #endif
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437
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438 #if HAVE__UITOA
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439 #define SDL_uitoa _uitoa
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440 #else
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441 #define SDL_uitoa(value, string, radix) SDL_ultoa((long)value, string, radix)
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442 #endif
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443
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444 #if HAVE__ULTOA
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445 #define SDL_ultoa _ultoa
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446 #else
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447 extern DECLSPEC char * SDLCALL SDL_ultoa(unsigned long value, char *string, int radix);
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448 #endif
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449
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450 #if HAVE_STRTOL
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451 #define SDL_strtol strtol
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452 #else
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453 extern DECLSPEC long SDLCALL SDL_strtol(const char *string, char **endp, int base);
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454 #endif
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455
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456 #if SDL_HAS_64BIT_TYPE
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457
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458 #if HAVE__I64TOA
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459 #define SDL_lltoa _i64toa
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460 #else
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461 extern DECLSPEC char* SDLCALL SDL_lltoa(Sint64 value, char *string, int radix);
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462 #endif
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463
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464 #if HAVE__UI64TOA
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465 #define SDL_ulltoa _ui64toa
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466 #else
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467 extern DECLSPEC char* SDLCALL SDL_ulltoa(Uint64 value, char *string, int radix);
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468 #endif
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469
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470 #if HAVE_STRTOLL
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471 #define SDL_strtoll strtoll
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472 #else
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473 extern DECLSPEC Sint64 SDLCALL SDL_strtoll(const char *string, char **endp, int base);
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474 #endif
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475
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476 #endif /* SDL_HAS_64BIT_TYPE */
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477
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478 #if HAVE_STRTOD
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479 #define SDL_strtod strtod
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480 #else
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481 extern DECLSPEC double SDLCALL SDL_strtod(const char *string, char **endp);
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482 #endif
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483
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484 #if HAVE_ATOI
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485 #define SDL_atoi atoi
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486 #else
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487 #define SDL_atoi(X) SDL_strtol(X, NULL, 0)
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488 #endif
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489
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490 #if HAVE_ATOF
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491 #define SDL_atof atof
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492 #else
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493 #define SDL_atof(X) SDL_strtod(X, NULL)
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494 #endif
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495
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496 #if HAVE_STRCMP
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497 #define SDL_strcmp strcmp
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498 #else
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499 extern DECLSPEC int SDLCALL SDL_strcmp(const char *str1, const char *str2);
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500 #endif
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501
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502 #if HAVE_STRNCMP
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503 #define SDL_strncmp strncmp
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504 #else
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505 extern DECLSPEC int SDLCALL SDL_strncmp(const char *str1, const char *str2, size_t maxlen);
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506 #endif
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507
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508 #if HAVE_STRCASECMP
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509 #define SDL_strcasecmp strcasecmp
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510 #elif HAVE_STRICMP
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511 #define SDL_strcasecmp stricmp
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512 #else
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513 extern DECLSPEC int SDLCALL SDL_strcasecmp(const char *str1, const char *str2);
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514 #endif
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515
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516 #if HAVE_SSCANF
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517 #define SDL_sscanf sscanf
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518 #else
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519 extern DECLSPEC int SDLCALL SDL_sscanf(const char *text, const char *fmt, ...);
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520 #endif
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521
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522 #if HAVE_SNPRINTF
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523 #define SDL_snprintf snprintf
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524 #else
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525 extern DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...);
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526 #endif
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527
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528 #if HAVE_VSNPRINTF
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529 #define SDL_vsnprintf vsnprintf
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530 #else
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531 extern DECLSPEC int SDLCALL SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);
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532 #endif
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533
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534 /* Ends C function definitions when using C++ */
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535 #ifdef __cplusplus
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536 }
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537 #endif
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538 #include "close_code.h"
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539
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540 #endif /* _SDL_stdinc_h */
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