1 | /* $Id: tstRTBitOperations.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
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2 | /** @file
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3 | * IPRT Testcase - Inlined Bit Operations.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2016 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #include <iprt/asm.h>
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32 |
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33 | #include <iprt/initterm.h>
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34 | #include <iprt/stream.h>
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35 | #include <iprt/string.h>
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36 | #include <iprt/test.h>
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37 |
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38 |
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39 | /*
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40 | * Test 2 - ID allocation using a bitmap.
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41 | */
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42 |
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43 | #define NIL_TEST2_ID 0
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44 | #define TEST2_ID_LAST ((RT_BIT_32(28) - 1) >> 8)
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45 |
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46 | struct TestMap2
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47 | {
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48 | uint32_t idNil;
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49 | uint32_t idLast;
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50 | uint32_t idChunkPrev;
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51 | uint32_t bmChunkId[(TEST2_ID_LAST + 1 + 31) / 32];
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52 | };
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53 |
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54 | static uint32_t test2AllocId(struct TestMap2 *p2)
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55 | {
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56 | /*
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57 | * Scan sequentially from the last one + 1.
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58 | */
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59 | int32_t idChunk = ++p2->idChunkPrev;
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60 | if ( (uint32_t)idChunk < TEST2_ID_LAST
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61 | && idChunk > NIL_TEST2_ID)
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62 | {
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63 | idChunk = ASMBitNextClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1, idChunk);
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64 | if (idChunk > NIL_TEST2_ID)
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65 | {
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66 | if (ASMAtomicBitTestAndSet(&p2->bmChunkId[0], idChunk))
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67 | {
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68 | RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
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69 | return NIL_TEST2_ID;
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70 | }
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71 | return p2->idChunkPrev = idChunk;
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72 | }
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73 | }
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74 |
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75 | /*
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76 | * Ok, scan from the start.
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77 | */
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78 | idChunk = ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1);
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79 | if (idChunk <= NIL_TEST2_ID)
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80 | {
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81 | RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
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82 | return NIL_TEST2_ID;
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83 | }
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84 | if (ASMAtomicBitTestAndSet(&p2->bmChunkId[0], idChunk))
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85 | {
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86 | RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
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87 | return NIL_TEST2_ID;
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88 | }
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89 |
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90 | return p2->idChunkPrev = idChunk;
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91 | }
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92 |
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93 |
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94 | static void test2(RTTEST hTest)
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95 | {
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96 | struct TestMap2 *p2 = (struct TestMap2 *)RTTestGuardedAllocTail(hTest, sizeof(TestMap2));
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97 | p2->idNil = NIL_TEST2_ID;
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98 | p2->idLast = TEST2_ID_LAST;
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99 |
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100 | /* Some simple tests first. */
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101 | RT_ZERO(p2->bmChunkId);
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102 | RTTEST_CHECK(hTest, ASMBitFirstSet(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
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103 | for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
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104 | RTTEST_CHECK(hTest, !ASMBitTest(&p2->bmChunkId[0], iBit));
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105 |
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106 | memset(&p2->bmChunkId[0], 0xff, sizeof(p2->bmChunkId));
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107 | RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
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108 | for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
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109 | RTTEST_CHECK(hTest, ASMBitTest(&p2->bmChunkId[0], iBit));
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110 |
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111 | /* The real test. */
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112 | p2->idChunkPrev = 0;
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113 | RT_ZERO(p2->bmChunkId);
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114 | ASMBitSet(p2->bmChunkId, NIL_TEST2_ID);
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115 | uint32_t cLeft = TEST2_ID_LAST;
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116 | while (cLeft-- > 0)
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117 | test2AllocId(p2);
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118 |
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119 | RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
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120 | }
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121 |
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122 |
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123 | int main()
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124 | {
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125 | /*
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126 | * Init the runtime and stuff.
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127 | */
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128 | RTTEST hTest;
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129 | int rc = RTTestInitAndCreate("tstRTBitOperations", &hTest);
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130 | if (rc)
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131 | return rc;
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132 | RTTestBanner(hTest);
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133 |
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134 | int i;
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135 | int j;
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136 | int k;
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137 |
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138 | /*
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139 | * Tests
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140 | */
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141 | struct TestMap
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142 | {
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143 | uint32_t au32[4];
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144 | };
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145 | #if 0
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146 | struct TestMap sTest;
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147 | struct TestMap *p = &sTest;
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148 | #else
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149 | struct TestMap *p = (struct TestMap *)RTTestGuardedAllocTail(hTest, sizeof(*p));
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150 | #endif
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151 | #define DUMP() RTTestPrintf(hTest, RTTESTLVL_INFO, "au32={%08x,%08x,%08x,%08x}", p->au32[0], p->au32[1], p->au32[2], p->au32[3])
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152 | #define CHECK(expr) do { if (!(expr)) { RTTestFailed(hTest, "line %d: %s", __LINE__, #expr); DUMP(); } CHECK_GUARD(s); } while (0)
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153 | #define CHECK_BIT(expr, b1) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d: %s", __LINE__, b1, #expr); } CHECK_GUARD(s); } while (0)
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154 | #define CHECK_BIT2(expr, b1, b2) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d: %s", __LINE__, b1, b2, #expr); } CHECK_GUARD(s); } while (0)
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155 | #define CHECK_BIT3(expr, b1, b2, b3) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d b3=%d: %s", __LINE__, b1, b2, b3, #expr); } CHECK_GUARD(s); } while (0)
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156 |
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157 | #define GUARD_MAP(p) do { } while (0)
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158 | #define CHECK_GUARD(p) do { } while (0)
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159 | #define MAP_CLEAR(p) do { RT_ZERO(*(p)); GUARD_MAP(p); } while (0)
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160 | #define MAP_SET(p) do { memset(p, 0xff, sizeof(*(p))); GUARD_MAP(p); } while (0)
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161 |
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162 | /* self check. */
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163 | MAP_CLEAR(p);
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164 | CHECK_GUARD(p);
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165 |
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166 | /* bit set */
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167 | MAP_CLEAR(p);
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168 | ASMBitSet(&p->au32[0], 0);
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169 | ASMBitSet(&p->au32[0], 31);
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170 | ASMBitSet(&p->au32[0], 65);
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171 | CHECK(p->au32[0] == 0x80000001U);
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172 | CHECK(p->au32[2] == 0x00000002U);
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173 | CHECK(ASMBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x80000001U);
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174 | CHECK(!ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
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175 | CHECK(ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
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176 | CHECK(!ASMBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010002U);
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177 |
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178 | MAP_CLEAR(p);
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179 | ASMAtomicBitSet(&p->au32[0], 0);
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180 | ASMAtomicBitSet(&p->au32[0], 30);
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181 | ASMAtomicBitSet(&p->au32[0], 64);
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182 | CHECK(p->au32[0] == 0x40000001U);
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183 | CHECK(p->au32[2] == 0x00000001U);
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184 | CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x40000001U);
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185 | CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
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186 | CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
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187 | CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010001U);
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188 |
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189 | /* bit clear */
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190 | MAP_SET(p);
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191 | ASMBitClear(&p->au32[0], 0);
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192 | ASMBitClear(&p->au32[0], 31);
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193 | ASMBitClear(&p->au32[0], 65);
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194 | CHECK(p->au32[0] == ~0x80000001U);
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195 | CHECK(p->au32[2] == ~0x00000002U);
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196 | CHECK(!ASMBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
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197 | CHECK(ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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198 | CHECK(!ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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199 | CHECK(ASMBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
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200 |
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201 | MAP_SET(p);
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202 | ASMAtomicBitClear(&p->au32[0], 0);
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203 | ASMAtomicBitClear(&p->au32[0], 30);
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204 | ASMAtomicBitClear(&p->au32[0], 64);
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205 | CHECK(p->au32[0] == ~0x40000001U);
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206 | CHECK(p->au32[2] == ~0x00000001U);
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207 | CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
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208 | CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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209 | CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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210 | CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
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211 |
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212 | /* toggle */
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213 | MAP_SET(p);
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214 | ASMBitToggle(&p->au32[0], 0);
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215 | ASMBitToggle(&p->au32[0], 31);
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216 | ASMBitToggle(&p->au32[0], 65);
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217 | ASMBitToggle(&p->au32[0], 47);
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218 | ASMBitToggle(&p->au32[0], 47);
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219 | CHECK(p->au32[0] == ~0x80000001U);
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220 | CHECK(p->au32[2] == ~0x00000002U);
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221 | CHECK(!ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000000U);
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222 | CHECK(ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
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223 | CHECK(ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
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224 | CHECK(!ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80000001U);
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225 | CHECK(ASMBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
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226 |
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227 | MAP_SET(p);
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228 | ASMAtomicBitToggle(&p->au32[0], 0);
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229 | ASMAtomicBitToggle(&p->au32[0], 30);
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230 | ASMAtomicBitToggle(&p->au32[0], 64);
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231 | ASMAtomicBitToggle(&p->au32[0], 47);
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232 | ASMAtomicBitToggle(&p->au32[0], 47);
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233 | CHECK(p->au32[0] == ~0x40000001U);
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234 | CHECK(p->au32[2] == ~0x00000001U);
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235 | CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000000U);
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236 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
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237 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
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238 | CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40000001U);
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239 | CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
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240 |
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241 | /* test bit. */
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242 | for (i = 0; i < 128; i++)
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243 | {
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244 | MAP_SET(p);
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245 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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246 | ASMBitToggle(&p->au32[0], i);
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247 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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248 | CHECK_BIT(!ASMBitTestAndToggle(&p->au32[0], i), i);
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249 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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250 | CHECK_BIT(ASMBitTestAndToggle(&p->au32[0], i), i);
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251 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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252 |
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253 | MAP_SET(p);
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254 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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255 | ASMAtomicBitToggle(&p->au32[0], i);
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256 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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257 | CHECK_BIT(!ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
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258 | CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
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259 | CHECK_BIT(ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
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260 | CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
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261 | }
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262 |
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263 | /* bit searching */
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264 | MAP_SET(p);
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265 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == -1);
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266 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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267 |
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268 | ASMBitClear(&p->au32[0], 1);
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269 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 1);
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270 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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271 |
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272 | MAP_SET(p);
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273 | ASMBitClear(&p->au32[0], 95);
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274 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 95);
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275 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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276 |
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277 | MAP_SET(p);
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278 | ASMBitClear(&p->au32[0], 127);
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279 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 127);
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280 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
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281 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 0) == 1);
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282 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 1) == 2);
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283 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 2) == 3);
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284 |
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285 |
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286 | MAP_SET(p);
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287 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 0) == -1);
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288 | ASMBitClear(&p->au32[0], 32);
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289 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 32) == -1);
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290 | ASMBitClear(&p->au32[0], 88);
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291 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
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292 |
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293 | MAP_SET(p);
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294 | ASMBitClear(&p->au32[0], 31);
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295 | ASMBitClear(&p->au32[0], 57);
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296 | ASMBitClear(&p->au32[0], 88);
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297 | ASMBitClear(&p->au32[0], 101);
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298 | ASMBitClear(&p->au32[0], 126);
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299 | ASMBitClear(&p->au32[0], 127);
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300 | CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 31);
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301 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 31) == 57);
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302 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
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303 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 88) == 101);
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304 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 101) == 126);
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305 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 126) == 127);
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306 | CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 127) == -1);
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307 |
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308 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 29) == 30);
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309 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 30) == 32);
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310 |
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311 | MAP_CLEAR(p);
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312 | for (i = 1; i < 128; i++)
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313 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
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314 | for (i = 0; i < 128; i++)
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315 | {
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316 | MAP_SET(p);
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317 | ASMBitClear(&p->au32[0], i);
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318 | CHECK_BIT(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == i, i);
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319 | for (j = 0; j < i; j++)
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320 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
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321 | for (j = i; j < 128; j++)
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322 | CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
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323 | }
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324 |
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325 | /* clear range. */
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326 | MAP_SET(p);
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327 | ASMBitClearRange(&p->au32, 0, 128);
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328 | CHECK(!p->au32[0] && !p->au32[1] && !p->au32[2] && !p->au32[3]);
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329 | for (i = 0; i < 128; i++)
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330 | {
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331 | for (j = i + 1; j <= 128; j++)
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332 | {
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333 | MAP_SET(p);
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334 | ASMBitClearRange(&p->au32, i, j);
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335 | for (k = 0; k < i; k++)
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336 | CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
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337 | for (k = i; k < j; k++)
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338 | CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
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339 | for (k = j; k < 128; k++)
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340 | CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
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341 | }
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342 | }
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343 |
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344 | /* set range. */
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345 | MAP_CLEAR(p);
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346 | ASMBitSetRange(&p->au32[0], 0, 5);
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347 | ASMBitSetRange(&p->au32[0], 6, 44);
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348 | ASMBitSetRange(&p->au32[0], 64, 65);
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349 | CHECK(p->au32[0] == UINT32_C(0xFFFFFFDF));
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350 | CHECK(p->au32[1] == UINT32_C(0x00000FFF));
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351 | CHECK(p->au32[2] == UINT32_C(0x00000001));
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352 |
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353 | MAP_CLEAR(p);
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354 | ASMBitSetRange(&p->au32[0], 0, 1);
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355 | ASMBitSetRange(&p->au32[0], 62, 63);
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356 | ASMBitSetRange(&p->au32[0], 63, 64);
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357 | ASMBitSetRange(&p->au32[0], 127, 128);
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358 | CHECK(p->au32[0] == UINT32_C(0x00000001) && p->au32[1] == UINT32_C(0xC0000000));
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359 | CHECK(p->au32[2] == UINT32_C(0x00000000) && p->au32[3] == UINT32_C(0x80000000));
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360 |
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361 | MAP_CLEAR(p);
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362 | ASMBitSetRange(&p->au32, 0, 128);
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363 | CHECK(!~p->au32[0] && !~p->au32[1] && !~p->au32[2] && !~p->au32[3]);
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364 | for (i = 0; i < 128; i++)
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365 | {
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366 | for (j = i + 1; j <= 128; j++)
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367 | {
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368 | MAP_CLEAR(p);
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369 | ASMBitSetRange(&p->au32, i, j);
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370 | for (k = 0; k < i; k++)
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371 | CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
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372 | for (k = i; k < j; k++)
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373 | CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
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374 | for (k = j; k < 128; k++)
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375 | CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
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376 | }
|
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377 | }
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378 |
|
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379 | /* searching for set bits. */
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380 | MAP_CLEAR(p);
|
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381 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == -1);
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382 |
|
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383 | ASMBitSet(&p->au32[0], 65);
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384 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 65);
|
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385 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 65) == -1);
|
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386 | for (i = 0; i < 65; i++)
|
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387 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
|
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388 | for (i = 65; i < 128; i++)
|
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389 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == -1);
|
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390 |
|
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391 | ASMBitSet(&p->au32[0], 17);
|
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392 | CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 17);
|
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393 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 17) == 65);
|
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394 | for (i = 0; i < 16; i++)
|
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395 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 17);
|
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396 | for (i = 17; i < 65; i++)
|
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397 | CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
|
---|
398 |
|
---|
399 | MAP_SET(p);
|
---|
400 | for (i = 1; i < 128; i++)
|
---|
401 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
|
---|
402 | for (i = 0; i < 128; i++)
|
---|
403 | {
|
---|
404 | MAP_CLEAR(p);
|
---|
405 | ASMBitSet(&p->au32[0], i);
|
---|
406 | CHECK_BIT(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == i, i);
|
---|
407 | for (j = 0; j < i; j++)
|
---|
408 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
|
---|
409 | for (j = i; j < 128; j++)
|
---|
410 | CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
|
---|
411 | }
|
---|
412 |
|
---|
413 |
|
---|
414 | CHECK(ASMBitLastSetU32(0) == 0);
|
---|
415 | CHECK(ASMBitLastSetU32(1) == 1);
|
---|
416 | CHECK(ASMBitLastSetU32(0x80000000) == 32);
|
---|
417 | CHECK(ASMBitLastSetU32(0xffffffff) == 32);
|
---|
418 | CHECK(ASMBitLastSetU32(RT_BIT(23) | RT_BIT(11)) == 24);
|
---|
419 | for (i = 0; i < 32; i++)
|
---|
420 | CHECK(ASMBitLastSetU32(1 << i) == (unsigned)i + 1);
|
---|
421 |
|
---|
422 | CHECK(ASMBitFirstSetU32(0) == 0);
|
---|
423 | CHECK(ASMBitFirstSetU32(1) == 1);
|
---|
424 | CHECK(ASMBitFirstSetU32(0x80000000) == 32);
|
---|
425 | CHECK(ASMBitFirstSetU32(0xffffffff) == 1);
|
---|
426 | CHECK(ASMBitFirstSetU32(RT_BIT(23) | RT_BIT(11)) == 12);
|
---|
427 | for (i = 0; i < 32; i++)
|
---|
428 | CHECK(ASMBitFirstSetU32(1 << i) == (unsigned)i + 1);
|
---|
429 |
|
---|
430 | /*
|
---|
431 | * Special tests.
|
---|
432 | */
|
---|
433 | test2(hTest);
|
---|
434 |
|
---|
435 | /*
|
---|
436 | * Summary
|
---|
437 | */
|
---|
438 | return RTTestSummaryAndDestroy(hTest);
|
---|
439 | }
|
---|
440 |
|
---|