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      1 // This module does unit testing of m_libcbase.
      2 
      3 #include <assert.h>
      4 #include <stdio.h>
      5 #include <stdlib.h>
      6 
      7 #include "pub_tool_basics.h"  /* UInt et al, needed for pub_tool_vki.h */
      8 #include "pub_tool_vki.h"
      9 #include "m_libcbase.c"
     10 
     11 #define  CHECK(x) \
     12    if (!x) { fprintf(stderr, "failure: %s:%d\n", __FILE__, __LINE__); }
     13 
     14 
     15 void test_VG_STREQ(void)
     16 {
     17    CHECK( ! VG_STREQ(NULL,    NULL) );  // Nb: strcmp() considers these equal
     18    CHECK( ! VG_STREQ(NULL,    "ab") );  // Nb: strcmp() seg faults on this
     19    CHECK( ! VG_STREQ("ab",    NULL) );  // Nb: strcmp() seg faults on this
     20    CHECK( ! VG_STREQ("",      "a")  );
     21    CHECK( ! VG_STREQ("a",     "")   );
     22    CHECK( ! VG_STREQ("abc",   "abcd"));
     23    CHECK( ! VG_STREQ("abcd",  "abc") );
     24    CHECK( ! VG_STREQ("Abcd",  "abcd"));
     25    CHECK( ! VG_STREQ("abcd",  "Abcd"));
     26 
     27    CHECK( VG_STREQ("",     "") );
     28    CHECK( VG_STREQ("a",    "a") );
     29    CHECK( VG_STREQ("abcd", "abcd") );
     30 }
     31 
     32 void test_VG_STREQN(void)
     33 {
     34    CHECK( ! VG_STREQN(0, NULL,    NULL) );
     35    CHECK( ! VG_STREQN(5, NULL,    NULL) );
     36    CHECK( ! VG_STREQN(0, NULL,    "ab") );
     37    CHECK( ! VG_STREQN(5, NULL,    "ab") );
     38    CHECK( ! VG_STREQN(0, "ab",    NULL) );
     39    CHECK( ! VG_STREQN(1, "",      "a")  );
     40    CHECK( ! VG_STREQN(1, "a",     "")   );
     41    CHECK( ! VG_STREQN(4, "abc",   "abcd"));
     42    CHECK( ! VG_STREQN(4, "abcd",  "abc") );
     43    CHECK( ! VG_STREQN(1, "Abcd",  "abcd"));
     44    CHECK( ! VG_STREQN(4, "Abcd",  "abcd"));
     45    CHECK( ! VG_STREQN(4, "abcd",  "abce"));
     46    CHECK( ! VG_STREQN(9, "abcd",  "abce"));
     47 
     48    CHECK( VG_STREQN(0, "",     "") );
     49    CHECK( VG_STREQN(1, "",     "") );
     50    CHECK( VG_STREQN(0, "a",    "a") );
     51    CHECK( VG_STREQN(1, "a",    "a") );
     52    CHECK( VG_STREQN(2, "a",    "a") );
     53    CHECK( VG_STREQN(9, "a",    "a") );
     54    CHECK( VG_STREQN(1, "ab",   "ac"));
     55    CHECK( VG_STREQN(3, "abcd", "abce"));
     56 }
     57 
     58 // On PPC/Linux VKI_PAGE_SIZE is a variable, not a macro.
     59 #if defined(VGP_ppc32_linux) || defined(VGP_ppc64_linux)
     60 unsigned long VKI_PAGE_SIZE  = 1UL << 12;
     61 #endif
     62 
     63 void test_VG_IS_XYZ_ALIGNED(void)
     64 {
     65    CHECK(   VG_IS_2_ALIGNED(0x0) );
     66    CHECK( ! VG_IS_2_ALIGNED(0x1) );
     67    CHECK(   VG_IS_2_ALIGNED(0x2) );
     68    CHECK( ! VG_IS_2_ALIGNED(0x3) );
     69    CHECK(   VG_IS_2_ALIGNED(0x4) );
     70    CHECK( ! VG_IS_2_ALIGNED(0x5) );
     71    CHECK(   VG_IS_2_ALIGNED(0x6) );
     72    CHECK( ! VG_IS_2_ALIGNED(0x7) );
     73    CHECK(   VG_IS_2_ALIGNED(0x8) );
     74    CHECK( ! VG_IS_2_ALIGNED(0x9) );
     75    CHECK(   VG_IS_2_ALIGNED(0xa) );
     76    CHECK( ! VG_IS_2_ALIGNED(0xb) );
     77    CHECK(   VG_IS_2_ALIGNED(0xc) );
     78    CHECK( ! VG_IS_2_ALIGNED(0xd) );
     79    CHECK(   VG_IS_2_ALIGNED(0xe) );
     80    CHECK( ! VG_IS_2_ALIGNED(0xf) );
     81 
     82    CHECK(   VG_IS_4_ALIGNED(0x0) );
     83    CHECK( ! VG_IS_4_ALIGNED(0x1) );
     84    CHECK( ! VG_IS_4_ALIGNED(0x2) );
     85    CHECK( ! VG_IS_4_ALIGNED(0x3) );
     86    CHECK(   VG_IS_4_ALIGNED(0x4) );
     87    CHECK( ! VG_IS_4_ALIGNED(0x5) );
     88    CHECK( ! VG_IS_4_ALIGNED(0x6) );
     89    CHECK( ! VG_IS_4_ALIGNED(0x7) );
     90    CHECK(   VG_IS_4_ALIGNED(0x8) );
     91    CHECK( ! VG_IS_4_ALIGNED(0x9) );
     92    CHECK( ! VG_IS_4_ALIGNED(0xa) );
     93    CHECK( ! VG_IS_4_ALIGNED(0xb) );
     94    CHECK(   VG_IS_4_ALIGNED(0xc) );
     95    CHECK( ! VG_IS_4_ALIGNED(0xd) );
     96    CHECK( ! VG_IS_4_ALIGNED(0xe) );
     97    CHECK( ! VG_IS_4_ALIGNED(0xf) );
     98 
     99    CHECK(   VG_IS_8_ALIGNED(0x0) );
    100    CHECK( ! VG_IS_8_ALIGNED(0x1) );
    101    CHECK( ! VG_IS_8_ALIGNED(0x2) );
    102    CHECK( ! VG_IS_8_ALIGNED(0x3) );
    103    CHECK( ! VG_IS_8_ALIGNED(0x4) );
    104    CHECK( ! VG_IS_8_ALIGNED(0x5) );
    105    CHECK( ! VG_IS_8_ALIGNED(0x6) );
    106    CHECK( ! VG_IS_8_ALIGNED(0x7) );
    107    CHECK(   VG_IS_8_ALIGNED(0x8) );
    108    CHECK( ! VG_IS_8_ALIGNED(0x9) );
    109    CHECK( ! VG_IS_8_ALIGNED(0xa) );
    110    CHECK( ! VG_IS_8_ALIGNED(0xb) );
    111    CHECK( ! VG_IS_8_ALIGNED(0xc) );
    112    CHECK( ! VG_IS_8_ALIGNED(0xd) );
    113    CHECK( ! VG_IS_8_ALIGNED(0xe) );
    114    CHECK( ! VG_IS_8_ALIGNED(0xf) );
    115 
    116    CHECK(   VG_IS_16_ALIGNED(0x0) );
    117    CHECK( ! VG_IS_16_ALIGNED(0x1) );
    118    CHECK( ! VG_IS_16_ALIGNED(0x2) );
    119    CHECK( ! VG_IS_16_ALIGNED(0x3) );
    120    CHECK( ! VG_IS_16_ALIGNED(0x4) );
    121    CHECK( ! VG_IS_16_ALIGNED(0x5) );
    122    CHECK( ! VG_IS_16_ALIGNED(0x6) );
    123    CHECK( ! VG_IS_16_ALIGNED(0x7) );
    124    CHECK( ! VG_IS_16_ALIGNED(0x8) );
    125    CHECK( ! VG_IS_16_ALIGNED(0x9) );
    126    CHECK( ! VG_IS_16_ALIGNED(0xa) );
    127    CHECK( ! VG_IS_16_ALIGNED(0xb) );
    128    CHECK( ! VG_IS_16_ALIGNED(0xc) );
    129    CHECK( ! VG_IS_16_ALIGNED(0xd) );
    130    CHECK( ! VG_IS_16_ALIGNED(0xe) );
    131    CHECK( ! VG_IS_16_ALIGNED(0xf) );
    132 
    133    CHECK(   VG_IS_WORD_ALIGNED(0x0) );
    134    CHECK( ! VG_IS_WORD_ALIGNED(0x1) );
    135    CHECK( ! VG_IS_WORD_ALIGNED(0x2) );
    136    CHECK( ! VG_IS_WORD_ALIGNED(0x3) );
    137    // 0x4 case below
    138    CHECK( ! VG_IS_WORD_ALIGNED(0x5) );
    139    CHECK( ! VG_IS_WORD_ALIGNED(0x6) );
    140    CHECK( ! VG_IS_WORD_ALIGNED(0x7) );
    141    CHECK(   VG_IS_WORD_ALIGNED(0x8) );
    142    CHECK( ! VG_IS_WORD_ALIGNED(0x9) );
    143    CHECK( ! VG_IS_WORD_ALIGNED(0xa) );
    144    CHECK( ! VG_IS_WORD_ALIGNED(0xb) );
    145    // 0xc case below
    146    CHECK( ! VG_IS_WORD_ALIGNED(0xd) );
    147    CHECK( ! VG_IS_WORD_ALIGNED(0xe) );
    148    CHECK( ! VG_IS_WORD_ALIGNED(0xf) );
    149    if        (4 == sizeof(void*)) {
    150       CHECK(   VG_IS_WORD_ALIGNED(0x4) );
    151       CHECK(   VG_IS_WORD_ALIGNED(0xc) );
    152    } else if (8 == sizeof(void*)) {
    153       CHECK( ! VG_IS_WORD_ALIGNED(0x4) );
    154       CHECK( ! VG_IS_WORD_ALIGNED(0xc) );
    155    } else {
    156       assert(0);
    157    }
    158 
    159    CHECK(   VG_IS_PAGE_ALIGNED(0x0) );
    160    CHECK( ! VG_IS_PAGE_ALIGNED(0x1) );
    161    CHECK( ! VG_IS_PAGE_ALIGNED(0x2) );
    162    CHECK( ! VG_IS_PAGE_ALIGNED(0x3) );
    163    CHECK( ! VG_IS_PAGE_ALIGNED(0x4) );
    164    CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE-1) );
    165    CHECK(   VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE  ) );
    166    CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE+1) );
    167 }
    168 
    169 void test_VG_ROUND_et_al()
    170 {
    171    CHECK( 0 == VG_ROUNDDN(0, 1) );
    172    CHECK( 1 == VG_ROUNDDN(1, 1) );
    173    CHECK( 2 == VG_ROUNDDN(2, 1) );
    174    CHECK( 3 == VG_ROUNDDN(3, 1) );
    175    CHECK( 4 == VG_ROUNDDN(4, 1) );
    176    CHECK( 5 == VG_ROUNDDN(5, 1) );
    177    CHECK( 6 == VG_ROUNDDN(6, 1) );
    178    CHECK( 7 == VG_ROUNDDN(7, 1) );
    179 
    180    CHECK( 0 == VG_ROUNDUP(0, 1) );
    181    CHECK( 1 == VG_ROUNDUP(1, 1) );
    182    CHECK( 2 == VG_ROUNDUP(2, 1) );
    183    CHECK( 3 == VG_ROUNDUP(3, 1) );
    184    CHECK( 4 == VG_ROUNDUP(4, 1) );
    185    CHECK( 5 == VG_ROUNDUP(5, 1) );
    186    CHECK( 6 == VG_ROUNDUP(6, 1) );
    187    CHECK( 7 == VG_ROUNDUP(7, 1) );
    188 
    189    CHECK( 0 == VG_ROUNDDN(0, 2) );
    190    CHECK( 0 == VG_ROUNDDN(1, 2) );
    191    CHECK( 2 == VG_ROUNDDN(2, 2) );
    192    CHECK( 2 == VG_ROUNDDN(3, 2) );
    193    CHECK( 4 == VG_ROUNDDN(4, 2) );
    194    CHECK( 4 == VG_ROUNDDN(5, 2) );
    195    CHECK( 6 == VG_ROUNDDN(6, 2) );
    196    CHECK( 6 == VG_ROUNDDN(7, 2) );
    197 
    198    CHECK( 0 == VG_ROUNDUP(0, 2) );
    199    CHECK( 2 == VG_ROUNDUP(1, 2) );
    200    CHECK( 2 == VG_ROUNDUP(2, 2) );
    201    CHECK( 4 == VG_ROUNDUP(3, 2) );
    202    CHECK( 4 == VG_ROUNDUP(4, 2) );
    203    CHECK( 6 == VG_ROUNDUP(5, 2) );
    204    CHECK( 6 == VG_ROUNDUP(6, 2) );
    205    CHECK( 8 == VG_ROUNDUP(7, 2) );
    206 
    207    CHECK( 0 == VG_ROUNDDN(0, 4) );
    208    CHECK( 0 == VG_ROUNDDN(1, 4) );
    209    CHECK( 0 == VG_ROUNDDN(2, 4) );
    210    CHECK( 0 == VG_ROUNDDN(3, 4) );
    211    CHECK( 4 == VG_ROUNDDN(4, 4) );
    212    CHECK( 4 == VG_ROUNDDN(5, 4) );
    213    CHECK( 4 == VG_ROUNDDN(6, 4) );
    214    CHECK( 4 == VG_ROUNDDN(7, 4) );
    215 
    216    CHECK( 0 == VG_ROUNDUP(0, 4) );
    217    CHECK( 4 == VG_ROUNDUP(1, 4) );
    218    CHECK( 4 == VG_ROUNDUP(2, 4) );
    219    CHECK( 4 == VG_ROUNDUP(3, 4) );
    220    CHECK( 4 == VG_ROUNDUP(4, 4) );
    221    CHECK( 8 == VG_ROUNDUP(5, 4) );
    222    CHECK( 8 == VG_ROUNDUP(6, 4) );
    223    CHECK( 8 == VG_ROUNDUP(7, 4) );
    224 
    225    CHECK( 0 == VG_ROUNDDN(0, 8) );
    226    CHECK( 0 == VG_ROUNDDN(1, 8) );
    227    CHECK( 0 == VG_ROUNDDN(2, 8) );
    228    CHECK( 0 == VG_ROUNDDN(3, 8) );
    229    CHECK( 0 == VG_ROUNDDN(4, 8) );
    230    CHECK( 0 == VG_ROUNDDN(5, 8) );
    231    CHECK( 0 == VG_ROUNDDN(6, 8) );
    232    CHECK( 0 == VG_ROUNDDN(7, 8) );
    233 
    234    CHECK( 0 == VG_ROUNDUP(0, 8) );
    235    CHECK( 8 == VG_ROUNDUP(1, 8) );
    236    CHECK( 8 == VG_ROUNDUP(2, 8) );
    237    CHECK( 8 == VG_ROUNDUP(3, 8) );
    238    CHECK( 8 == VG_ROUNDUP(4, 8) );
    239    CHECK( 8 == VG_ROUNDUP(5, 8) );
    240    CHECK( 8 == VG_ROUNDUP(6, 8) );
    241    CHECK( 8 == VG_ROUNDUP(7, 8) );
    242 
    243    CHECK( 0             == VG_PGROUNDDN(0) );
    244    CHECK( 0             == VG_PGROUNDDN(1) );
    245    CHECK( 0             == VG_PGROUNDDN(2) );
    246    CHECK( 0             == VG_PGROUNDDN(3) );
    247    CHECK( 0             == VG_PGROUNDDN(4) );
    248    CHECK( 0             == VG_PGROUNDDN(VKI_PAGE_SIZE-1) );
    249    CHECK( VKI_PAGE_SIZE == VG_PGROUNDDN(VKI_PAGE_SIZE  ) );
    250    CHECK( VKI_PAGE_SIZE == VG_PGROUNDDN(VKI_PAGE_SIZE+1) );
    251 
    252    CHECK( 0               == VG_PGROUNDUP(0) );
    253    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(1) );
    254    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(2) );
    255    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(3) );
    256    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(4) );
    257    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(VKI_PAGE_SIZE-1) );
    258    CHECK( VKI_PAGE_SIZE   == VG_PGROUNDUP(VKI_PAGE_SIZE  ) );
    259    CHECK( VKI_PAGE_SIZE*2 == VG_PGROUNDUP(VKI_PAGE_SIZE+1) );
    260 }
    261 
    262 void test_isspace(void)
    263 {
    264    CHECK(   VG_(isspace)(' ') );
    265    CHECK(   VG_(isspace)('\n') );
    266    CHECK(   VG_(isspace)('\t') );
    267    CHECK( ! VG_(isspace)('3') );
    268    CHECK( ! VG_(isspace)('x') );
    269 }
    270 
    271 void test_isdigit(void)
    272 {
    273    CHECK(   VG_(isdigit)('0') );
    274    CHECK(   VG_(isdigit)('1') );
    275    CHECK(   VG_(isdigit)('5') );
    276    CHECK(   VG_(isdigit)('9') );
    277    CHECK( ! VG_(isdigit)('a') );
    278    CHECK( ! VG_(isdigit)('!') );
    279 }
    280 
    281 void test_is_dec_digit()
    282 {
    283    Long x;
    284    CHECK( is_dec_digit('0', &x) && 0 == x );
    285    CHECK( is_dec_digit('1', &x) && 1 == x );
    286    CHECK( is_dec_digit('9', &x) && 9 == x );
    287 }
    288 
    289 void test_is_hex_digit()
    290 {
    291    Long x;
    292    CHECK( is_hex_digit('0', &x) &&  0 == x );
    293    CHECK( is_hex_digit('1', &x) &&  1 == x );
    294    CHECK( is_hex_digit('9', &x) &&  9 == x );
    295    CHECK( is_hex_digit('a', &x) && 10 == x );
    296    CHECK( is_hex_digit('f', &x) && 15 == x );
    297    CHECK( is_hex_digit('A', &x) && 10 == x );
    298    CHECK( is_hex_digit('F', &x) && 15 == x );
    299 }
    300 
    301 void test_strtoll_and_strtod(void)
    302 {
    303    // For VG_(strtoll*)()
    304    typedef struct {
    305       Char* str;        // The string to convert.
    306       Long  res;        // The result.
    307       Char  endptr_val; // The char one past the end of the converted text.
    308    } StrtollInputs;
    309 
    310    // VG_(strtoll10)()
    311    {
    312       StrtollInputs a[] = {
    313          // If there's no number at the head of the string, return 0, and
    314          // make 'endptr' point to the start of the string.
    315          { .str = "",      .res = 0, .endptr_val = '\0' },
    316          { .str = " \n\t", .res = 0, .endptr_val = ' '  },
    317          { .str = "one",   .res = 0, .endptr_val = 'o'  },
    318          { .str = "\ntwo", .res = 0, .endptr_val = '\n' },
    319 
    320          // Successful conversion.  Leading whitespace is ignored.  A single
    321          // '-' or '+' is accepted.
    322          { .str =  "0",            .res =       0, .endptr_val = '\0' },
    323          { .str = "+0",            .res =       0, .endptr_val = '\0' },
    324          { .str = "-0",            .res =       0, .endptr_val = '\0' },
    325          { .str =  "1",            .res =       1, .endptr_val = '\0' },
    326          { .str = "+1",            .res =       1, .endptr_val = '\0' },
    327          { .str = "-1",            .res =      -1, .endptr_val = '\0' },
    328          { .str = "12",            .res =      12, .endptr_val = '\0' },
    329          { .str = "-567",          .res =    -567, .endptr_val = '\0' },
    330          { .str = "1234567",       .res = 1234567, .endptr_val = '\0' },
    331          { .str = "007",           .res =       7, .endptr_val = '\0' },
    332          { .str = "   +42",        .res =      42, .endptr_val = '\0' },
    333          { .str = "\n\t\r\v  -56", .res =     -56, .endptr_val = '\0' },
    334          { .str = "123xyz",        .res =     123, .endptr_val = 'x'  },
    335          { .str = " -123abc",      .res =    -123, .endptr_val = 'a'  },
    336 
    337          // Whitespace after the +/- is not allowed;  conversion fails.
    338          { .str = "+ 1",   .res =  0, .endptr_val = '+' },
    339          { .str = "-\n1",  .res =  0, .endptr_val = '-' },
    340       };
    341 
    342       // Nb: We test the results against strtoll() as well.
    343       int i;
    344       for (i = 0; i < (sizeof(a) / sizeof(StrtollInputs)); i++) {
    345          Char* endptr1;
    346          char* endptr2;
    347          Long      res1 = VG_(strtoll10)(a[i].str, &endptr1);
    348          long long res2 =     strtoll   (a[i].str, &endptr2, 10);
    349          //printf("res1 = %lld, *endptr1 = '%c'\n", res1, *endptr1);
    350          //printf("res2 = %lld, *endptr2 = '%c'\n", res2, *endptr2);
    351          CHECK(a[i].res == res1 && a[i].endptr_val == *endptr1);
    352          CHECK(res2     == res1 && *endptr2        == *endptr1);
    353       }
    354    }
    355 
    356    // VG_(strtoll16)()
    357    {
    358       StrtollInputs a[] = {
    359          // If there's no number at the head of the string, return 0, and
    360          // make 'endptr' point to the start of the string.
    361          { .str = "",      .res = 0, .endptr_val = '\0' },
    362          { .str = " \n\t", .res = 0, .endptr_val = ' '  },
    363          { .str = "one",   .res = 0, .endptr_val = 'o'  },
    364          { .str = "\ntwo", .res = 0, .endptr_val = '\n' },
    365 
    366          // Successful conversion.  Leading whitespace is ignored.  A single
    367          // '-' or '+' is accepted.  "0X" and "0x" are also allowed at the
    368          // front, but if no digits follow, just the "0" is converted.
    369          { .str =   "0",           .res =        0, .endptr_val = '\0' },
    370          { .str = "0x0",           .res =        0, .endptr_val = '\0' },
    371          { .str = "0X0",           .res =        0, .endptr_val = '\0' },
    372          { .str = "0x",            .res =        0, .endptr_val = 'x'  },
    373          { .str = "0Xg",           .res =        0, .endptr_val = 'X'  },
    374          { .str =   "0",           .res =        0, .endptr_val = '\0' },
    375          { .str =  "+0",           .res =        0, .endptr_val = '\0' },
    376          { .str =  "-0",           .res =        0, .endptr_val = '\0' },
    377          { .str =   "1",           .res =        1, .endptr_val = '\0' },
    378          { .str =  "+1",           .res =        1, .endptr_val = '\0' },
    379          { .str =  "-1",           .res =       -1, .endptr_val = '\0' },
    380          { .str =  "1a",           .res =       26, .endptr_val = '\0' },
    381          { .str = "-5F7",          .res =    -1527, .endptr_val = '\0' },
    382          { .str = "0x1234567",     .res = 19088743, .endptr_val = '\0' },
    383          { .str = "007",           .res =        7, .endptr_val = '\0' },
    384          { .str = "0X00ABCD",      .res =    43981, .endptr_val = '\0' },
    385          { .str = "   +AbC",       .res =     2748, .endptr_val = '\0' },
    386          { .str = "   -0xAbC",     .res =    -2748, .endptr_val = '\0' },
    387          { .str = "   -0xxx",      .res =        0, .endptr_val = 'x'  },
    388          { .str = "\n\t\r\v  -56", .res =      -86, .endptr_val = '\0' },
    389          { .str = "123xyz",        .res =      291, .endptr_val = 'x'  },
    390          { .str = " -123defghi",   .res = -1195503, .endptr_val = 'g'  },
    391 
    392          // Whitespace after the +/- is not allowed;  conversion fails.
    393          { .str = "+ 1",    .res =  0, .endptr_val = '+' },
    394          { .str = "-\n0x1", .res =  0, .endptr_val = '-' },
    395       };
    396 
    397       // Nb: We test the results against strtoll() as well.
    398       int i;
    399       for (i = 0; i < (sizeof(a) / sizeof(StrtollInputs)); i++) {
    400          Char* endptr1;
    401          char* endptr2;
    402          Long      res1 = VG_(strtoll16)(a[i].str, &endptr1);
    403          long long res2 =     strtoll   (a[i].str, &endptr2, 16);
    404          //printf("  res1 = %lld, *endptr1 = '%c'\n", res1, *endptr1);
    405          //printf("  res2 = %lld, *endptr2 = '%c'\n", res2, *endptr2);
    406          CHECK(a[i].res == res1 && a[i].endptr_val == *endptr1);
    407          CHECK(res2     == res1 && *endptr2        == *endptr1);
    408       }
    409    }
    410 
    411    // VG_(strtod)()
    412    // XXX: todo
    413 }
    414 
    415 void test_log2(void)
    416 {
    417    CHECK( -1 == VG_(log2)(0) );
    418    CHECK(  0 == VG_(log2)(1) );
    419    CHECK(  1 == VG_(log2)(2) );
    420    CHECK( -1 == VG_(log2)(3) );
    421    CHECK(  2 == VG_(log2)(4) );
    422    CHECK( -1 == VG_(log2)(5) );
    423    CHECK( -1 == VG_(log2)(6) );
    424    CHECK( -1 == VG_(log2)(7) );
    425    CHECK(  3 == VG_(log2)(8) );
    426 
    427    CHECK( -1 == VG_(log2)( 15) );
    428    CHECK(  4 == VG_(log2)( 16) );
    429    CHECK( -1 == VG_(log2)( 17) );
    430 
    431    CHECK( -1 == VG_(log2)( 63) );
    432    CHECK(  6 == VG_(log2)( 64) );
    433    CHECK( -1 == VG_(log2)( 65) );
    434 
    435    CHECK( -1 == VG_(log2)(255) );
    436    CHECK(  8 == VG_(log2)(256) );
    437    CHECK( -1 == VG_(log2)(257) );
    438 
    439    CHECK( -1 == VG_(log2)(65535) );
    440    CHECK( 16 == VG_(log2)(65536) );
    441    CHECK( -1 == VG_(log2)(65537) );
    442 
    443    CHECK( -1 == VG_(log2)(16777215) );
    444    CHECK( 24 == VG_(log2)(16777216) );
    445    CHECK( -1 == VG_(log2)(16777217) );
    446 
    447    CHECK( -1 == VG_(log2)(2147483647U) );
    448    CHECK( 31 == VG_(log2)(2147483648U) );
    449    CHECK( -1 == VG_(log2)(2147483649U) );
    450 
    451    CHECK( -1 == VG_(log2)(4294967295U) );    // Max UInt
    452 }
    453 
    454 void test_random(void)
    455 {
    456    // Hmm, it's really hard to unit test a pseudo-random number generator.
    457    // So no testing here, sorry.
    458 }
    459 
    460 //-----------------------------------------------------------------------
    461 // main
    462 //-----------------------------------------------------------------------
    463 
    464 int main(void)
    465 {
    466    // Nb: the order of the tests is based on the order of the code in
    467    // m_libcbase.c, except that macros defined in pub_tool_libcbase.h are
    468    // tested first.
    469 
    470    //--------------------------------------------------------------------
    471    // pub_tool_libcbase.h macros
    472    //--------------------------------------------------------------------
    473    test_VG_STREQ();
    474    test_VG_STREQN();
    475    test_VG_IS_XYZ_ALIGNED();
    476    test_VG_ROUND_et_al();
    477 
    478    //--------------------------------------------------------------------
    479    // Char functions
    480    //--------------------------------------------------------------------
    481    test_isspace();
    482    test_isdigit();
    483 
    484    //--------------------------------------------------------------------
    485    // String-to-number functions
    486    //--------------------------------------------------------------------
    487    test_is_dec_digit();
    488    test_is_hex_digit();
    489    test_strtoll_and_strtod();
    490 
    491    //--------------------------------------------------------------------
    492    // String functions
    493    //--------------------------------------------------------------------
    494    // XXX: more todo: VG_(str_*)
    495 
    496    //--------------------------------------------------------------------
    497    // Mem functions
    498    //--------------------------------------------------------------------
    499    // XXX: todo: VG_(mem*)
    500 
    501    //--------------------------------------------------------------------
    502    // Miscellaneous functions
    503    //--------------------------------------------------------------------
    504    // XXX: todo: VG_(ssort)
    505    test_log2();
    506    test_random();
    507 
    508    return 0;
    509 }
    510 
    511