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annotate test/testplatform.c @ 4876:876f97bc7275

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Documentation clarification
author Sam Lantinga <slouken@libsdl.org>
date Sun, 29 Aug 2010 22:12:59 -0700
parents 8e5186a99af4
children 87f452305db4
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("RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected");
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144 printf("MMX %s\n", SDL_HasMMX()? "detected" : "not detected");
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145 printf("MMX Ext %s\n", SDL_HasMMXExt()? "detected" : "not detected");
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146 printf("3DNow %s\n", SDL_Has3DNow()? "detected" : "not detected");
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147 printf("3DNow Ext %s\n",
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148 SDL_Has3DNowExt()? "detected" : "not detected");
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149 printf("SSE %s\n", SDL_HasSSE()? "detected" : "not detected");
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150 printf("SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected");
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151 printf("AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected");
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152 }
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153 return (0);
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154 }
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155
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156 int
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157 TestAssertions(SDL_bool verbose)
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158 {
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159 SDL_assert(1);
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160 SDL_assert_release(1);
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161 SDL_assert_paranoid(1);
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162 SDL_assert(0 || 1);
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163 SDL_assert_release(0 || 1);
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164 SDL_assert_paranoid(0 || 1);
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165
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166 #if 0 /* enable this to test assertion failures. */
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167 SDL_assert_release(1 == 2);
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168 SDL_assert_release(5 < 4);
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169 SDL_assert_release(0 && "This is a test");
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170 #endif
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171 SDL_assert_release(0 && "This is a test");
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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 }