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annotate test/testplatform.c @ 5133:ec13e48ee0d9

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Fixed bug #1112 (retina display support) Vittorio Giovara 2011-02-01 02:21:50 PST with the attached patch, the opengles context will always use the maximum screensize available; this is particularly useful for supporting retina display on latest iphone. please note: Apple documentation warns that using the "upscaled" gl context actually uses more memory and bandwitdh, so it might be worth to let the user decide whether to disable it or not, either with a flag or a sdl function...
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Feb 2011 08:54:34 -0800
parents 0ec550f04bbc
children 6a65c1fc07af
rev   line source
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1
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2 #include <stdio.h>
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3
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4 #include "SDL.h"
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5 #include "SDL_endian.h"
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6 #include "SDL_cpuinfo.h"
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7 #include "SDL_assert.h"
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8
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9 /*
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10 * Watcom C flags these as Warning 201: "Unreachable code" if you just
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11 * compare them directly, so we push it through a function to keep the
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12 * compiler quiet. --ryan.
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13 */
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14 static int
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15 badsize(size_t sizeoftype, size_t hardcodetype)
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16 {
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17 return sizeoftype != hardcodetype;
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18 }
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19
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20 int
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21 TestTypes(SDL_bool verbose)
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22 {
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23 int error = 0;
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24
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25 if (badsize(sizeof(Uint8), 1)) {
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26 if (verbose)
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27 printf("sizeof(Uint8) != 1, instead = %u\n",
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28 (unsigned int)sizeof(Uint8));
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29 ++error;
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30 }
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31 if (badsize(sizeof(Uint16), 2)) {
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32 if (verbose)
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33 printf("sizeof(Uint16) != 2, instead = %u\n",
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34 (unsigned int)sizeof(Uint16));
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35 ++error;
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36 }
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37 if (badsize(sizeof(Uint32), 4)) {
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38 if (verbose)
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39 printf("sizeof(Uint32) != 4, instead = %u\n",
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40 (unsigned int)sizeof(Uint32));
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41 ++error;
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42 }
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43 #ifdef SDL_HAS_64BIT_TYPE
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44 if (badsize(sizeof(Uint64), 8)) {
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45 if (verbose)
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46 printf("sizeof(Uint64) != 8, instead = %u\n",
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47 (unsigned int)sizeof(Uint64));
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48 ++error;
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49 }
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50 #else
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51 if (verbose) {
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52 printf("WARNING: No 64-bit datatype on this platform\n");
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53 }
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54 #endif
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55 if (verbose && !error)
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56 printf("All data types are the expected size.\n");
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57
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58 return (error ? 1 : 0);
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59 }
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60
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61 int
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62 TestEndian(SDL_bool verbose)
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63 {
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64 int error = 0;
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65 Uint16 value = 0x1234;
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66 int real_byteorder;
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67 Uint16 value16 = 0xCDAB;
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68 Uint16 swapped16 = 0xABCD;
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69 Uint32 value32 = 0xEFBEADDE;
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70 Uint32 swapped32 = 0xDEADBEEF;
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71 #ifdef SDL_HAS_64BIT_TYPE
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72 Uint64 value64, swapped64;
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73 value64 = 0xEFBEADDE;
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74 value64 <<= 32;
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75 value64 |= 0xCDAB3412;
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76 swapped64 = 0x1234ABCD;
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77 swapped64 <<= 32;
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78 swapped64 |= 0xDEADBEEF;
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79 #endif
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80
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81 if (verbose) {
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82 printf("Detected a %s endian machine.\n",
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83 (SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big");
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84 }
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85 if ((*((char *) &value) >> 4) == 0x1) {
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86 real_byteorder = SDL_BIG_ENDIAN;
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87 } else {
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88 real_byteorder = SDL_LIL_ENDIAN;
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89 }
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90 if (real_byteorder != SDL_BYTEORDER) {
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91 if (verbose) {
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92 printf("Actually a %s endian machine!\n",
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93 (real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big");
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94 }
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95 ++error;
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96 }
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97 if (verbose) {
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98 printf("Value 16 = 0x%X, swapped = 0x%X\n", value16,
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99 SDL_Swap16(value16));
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100 }
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101 if (SDL_Swap16(value16) != swapped16) {
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102 if (verbose) {
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103 printf("16 bit value swapped incorrectly!\n");
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104 }
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105 ++error;
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106 }
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107 if (verbose) {
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108 printf("Value 32 = 0x%X, swapped = 0x%X\n", value32,
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109 SDL_Swap32(value32));
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110 }
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111 if (SDL_Swap32(value32) != swapped32) {
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112 if (verbose) {
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113 printf("32 bit value swapped incorrectly!\n");
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114 }
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115 ++error;
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116 }
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117 #ifdef SDL_HAS_64BIT_TYPE
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118 if (verbose) {
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119 #ifdef _MSC_VER
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120 printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64,
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121 SDL_Swap64(value64));
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122 #else
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123 printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64,
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124 SDL_Swap64(value64));
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125 #endif
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126 }
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127 if (SDL_Swap64(value64) != swapped64) {
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128 if (verbose) {
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129 printf("64 bit value swapped incorrectly!\n");
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130 }
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131 ++error;
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132 }
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133 #endif
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134 return (error ? 1 : 0);
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135 }
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136
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137
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138 int
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139 TestCPUInfo(SDL_bool verbose)
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140 {
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141 if (verbose) {
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142 printf("CPU count: %d\n", SDL_GetCPUCount());
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143 printf("CPU cache line size: %d\n", SDL_GetCPUCacheLineSize());
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144 printf("RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected");
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145 printf("MMX %s\n", SDL_HasMMX()? "detected" : "not detected");
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146 printf("MMX Ext %s\n", SDL_HasMMXExt()? "detected" : "not detected");
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147 printf("3DNow %s\n", SDL_Has3DNow()? "detected" : "not detected");
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148 printf("3DNow Ext %s\n",
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149 SDL_Has3DNowExt()? "detected" : "not detected");
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150 printf("SSE %s\n", SDL_HasSSE()? "detected" : "not detected");
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151 printf("SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected");
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152 printf("AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected");
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153 }
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154 return (0);
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155 }
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156
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157 int
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158 TestAssertions(SDL_bool verbose)
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159 {
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160 SDL_assert(1);
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161 SDL_assert_release(1);
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162 SDL_assert_paranoid(1);
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163 SDL_assert(0 || 1);
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164 SDL_assert_release(0 || 1);
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165 SDL_assert_paranoid(0 || 1);
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166
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167 #if 0 /* enable this to test assertion failures. */
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168 SDL_assert_release(1 == 2);
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169 SDL_assert_release(5 < 4);
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170 SDL_assert_release(0 && "This is a test");
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171 #endif
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172
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173 return (0);
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174 }
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175
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176 int
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177 main(int argc, char *argv[])
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178 {
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179 SDL_bool verbose = SDL_TRUE;
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180 int status = 0;
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181
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182 if (argv[1] && (SDL_strcmp(argv[1], "-q") == 0)) {
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183 verbose = SDL_FALSE;
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184 }
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185 if (verbose) {
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186 printf("This system is running %s\n", SDL_GetPlatform());
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187 }
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188
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189 status += TestTypes(verbose);
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190 status += TestEndian(verbose);
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191 status += TestCPUInfo(verbose);
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192 status += TestAssertions(verbose);
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193
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194 return status;
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195 }