compiler-rt/test/builtins/Unit/floatuntitf_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatuntitf
   3
   4 #define QUAD_PRECISION
   5 #include "fp_lib.h"
   6 #include "int_lib.h"
   7 #include <float.h>
   8 #include <stdio.h>
   9
  10 // The testcase currently assumes IEEE TF format, once that has been
  11 // fixed the defined(CRT_HAS_IEEE_TF) guard can be removed to enable it for
  12 // IBM 128 floats as well.
  13 #if defined(CRT_HAS_IEEE_TF)
  14
  15 #  include "fp_test.h"
  16
  17 /* Returns: convert a tu_int to a tf_float, rounding toward even. */
  18
  19 /* Assumption: tf_float is a IEEE 128 bit floating point type
  20  *             tu_int is a 128 bit integral type
  21  */
  22
  23 /* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
  24  * mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  25  */
  26
  27 COMPILER_RT_ABI tf_float __floatuntitf(tu_int a);
  28
  29 int _test__floatuntitf(int line, tu_int a, tf_float expected) {
  30   tf_float x = __floatuntitf(a);
  31   if (x != expected) {
  32     utwords at;
  33     at.all = a;
  34     __uint128_t expected_rep = toRep128(expected);
  35     __uint128_t res_rep = toRep128(x);
  36     printf("%s:%d: error in __floatuntitf(0x%.16llX%.16llX) = "
  37            "0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  38            __FILE__, line, at.s.high, at.s.low, (uint64_t)(res_rep >> 64),
  39            (uint64_t)res_rep, (uint64_t)(expected_rep >> 64),
  40            (uint64_t)expected_rep);
  41   }
  42   return x != expected;
  43 }
  44 #  define test__floatuntitf(a, e) _test__floatuntitf(__LINE__, a, e)
  45
  46 char assumption_1[sizeof(tu_int) == 2 * sizeof(du_int)] = {0};
  47 char assumption_2[sizeof(tu_int) * CHAR_BIT == 128] = {0};
  48 char assumption_3[sizeof(tf_float) * CHAR_BIT == 128] = {0};
  49
  50 #endif
  51
  52 int main() {
  53 #if defined(CRT_HAS_IEEE_TF)
  54   if (test__floatuntitf(0, TF_C(0.0)))
  55     return 1;
  56
  57   if (test__floatuntitf(1, TF_C(1.0)))
  58     return 1;
  59   if (test__floatuntitf(2, TF_C(2.0)))
  60     return 1;
  61   if (test__floatuntitf(20, TF_C(20.0)))
  62     return 1;
  63
  64   if (test__floatuntitf(0x7FFFFF8000000000ULL, TF_C(0x1.FFFFFEp+62)))
  65     return 1;
  66   if (test__floatuntitf(0x7FFFFFFFFFFFF800ULL, TF_C(0x1.FFFFFFFFFFFFEp+62)))
  67     return 1;
  68   if (test__floatuntitf(0x7FFFFF0000000000ULL, TF_C(0x1.FFFFFCp+62)))
  69     return 1;
  70   if (test__floatuntitf(0x7FFFFFFFFFFFF000ULL, TF_C(0x1.FFFFFFFFFFFFCp+62)))
  71     return 1;
  72   if (test__floatuntitf(0x7FFFFFFFFFFFFFFFULL, TF_C(0xF.FFFFFFFFFFFFFFEp+59)))
  73     return 1;
  74   if (test__floatuntitf(0xFFFFFFFFFFFFFFFEULL, TF_C(0xF.FFFFFFFFFFFFFFEp+60)))
  75     return 1;
  76   if (test__floatuntitf(0xFFFFFFFFFFFFFFFFULL, TF_C(0xF.FFFFFFFFFFFFFFFp+60)))
  77     return 1;
  78
  79   if (test__floatuntitf(0x8000008000000000ULL, TF_C(0x8.000008p+60)))
  80     return 1;
  81   if (test__floatuntitf(0x8000000000000800ULL, TF_C(0x8.0000000000008p+60)))
  82     return 1;
  83   if (test__floatuntitf(0x8000010000000000ULL, TF_C(0x8.00001p+60)))
  84     return 1;
  85   if (test__floatuntitf(0x8000000000001000ULL, TF_C(0x8.000000000001p+60)))
  86     return 1;
  87
  88   if (test__floatuntitf(0x8000000000000000ULL, TF_C(0x8p+60)))
  89     return 1;
  90   if (test__floatuntitf(0x8000000000000001ULL, TF_C(0x8.000000000000001p+60)))
  91     return 1;
  92
  93   if (test__floatuntitf(0x0007FB72E8000000LL, TF_C(0x1.FEDCBAp+50)))
  94     return 1;
  95
  96   if (test__floatuntitf(0x0007FB72EA000000LL, TF_C(0x1.FEDCBA8p+50)))
  97     return 1;
  98   if (test__floatuntitf(0x0007FB72EB000000LL, TF_C(0x1.FEDCBACp+50)))
  99     return 1;
 100   if (test__floatuntitf(0x0007FB72EBFFFFFFLL, TF_C(0x1.FEDCBAFFFFFFCp+50)))
 101     return 1;
 102   if (test__floatuntitf(0x0007FB72EC000000LL, TF_C(0x1.FEDCBBp+50)))
 103     return 1;
 104   if (test__floatuntitf(0x0007FB72E8000001LL, TF_C(0x1.FEDCBA0000004p+50)))
 105     return 1;
 106
 107   if (test__floatuntitf(0x0007FB72E6000000LL, TF_C(0x1.FEDCB98p+50)))
 108     return 1;
 109   if (test__floatuntitf(0x0007FB72E7000000LL, TF_C(0x1.FEDCB9Cp+50)))
 110     return 1;
 111   if (test__floatuntitf(0x0007FB72E7FFFFFFLL, TF_C(0x1.FEDCB9FFFFFFCp+50)))
 112     return 1;
 113   if (test__floatuntitf(0x0007FB72E4000001LL, TF_C(0x1.FEDCB90000004p+50)))
 114     return 1;
 115   if (test__floatuntitf(0x0007FB72E4000000LL, TF_C(0x1.FEDCB9p+50)))
 116     return 1;
 117
 118   if (test__floatuntitf(0x023479FD0E092DC0LL, TF_C(0x1.1A3CFE870496Ep+57)))
 119     return 1;
 120   if (test__floatuntitf(0x023479FD0E092DA1LL, TF_C(0x1.1A3CFE870496D08p+57)))
 121     return 1;
 122   if (test__floatuntitf(0x023479FD0E092DB0LL, TF_C(0x1.1A3CFE870496D8p+57)))
 123     return 1;
 124   if (test__floatuntitf(0x023479FD0E092DB8LL, TF_C(0x1.1A3CFE870496DCp+57)))
 125     return 1;
 126   if (test__floatuntitf(0x023479FD0E092DB6LL, TF_C(0x1.1A3CFE870496DBp+57)))
 127     return 1;
 128   if (test__floatuntitf(0x023479FD0E092DBFLL, TF_C(0x1.1A3CFE870496DF8p+57)))
 129     return 1;
 130   if (test__floatuntitf(0x023479FD0E092DC1LL, TF_C(0x1.1A3CFE870496E08p+57)))
 131     return 1;
 132   if (test__floatuntitf(0x023479FD0E092DC7LL, TF_C(0x1.1A3CFE870496E38p+57)))
 133     return 1;
 134   if (test__floatuntitf(0x023479FD0E092DC8LL, TF_C(0x1.1A3CFE870496E4p+57)))
 135     return 1;
 136   if (test__floatuntitf(0x023479FD0E092DCFLL, TF_C(0x1.1A3CFE870496E78p+57)))
 137     return 1;
 138   if (test__floatuntitf(0x023479FD0E092DD0LL, TF_C(0x1.1A3CFE870496E8p+57)))
 139     return 1;
 140   if (test__floatuntitf(0x023479FD0E092DD1LL, TF_C(0x1.1A3CFE870496E88p+57)))
 141     return 1;
 142   if (test__floatuntitf(0x023479FD0E092DD8LL, TF_C(0x1.1A3CFE870496ECp+57)))
 143     return 1;
 144   if (test__floatuntitf(0x023479FD0E092DDFLL, TF_C(0x1.1A3CFE870496EF8p+57)))
 145     return 1;
 146   if (test__floatuntitf(0x023479FD0E092DE0LL, TF_C(0x1.1A3CFE870496Fp+57)))
 147     return 1;
 148
 149   if (test__floatuntitf(make_ti(0x023479FD0E092DC0LL, 0),
 150                         TF_C(0x1.1A3CFE870496Ep+121)))
 151     return 1;
 152   if (test__floatuntitf(make_ti(0x023479FD0E092DA1LL, 1),
 153                         TF_C(0x1.1A3CFE870496D08p+121)))
 154     return 1;
 155   if (test__floatuntitf(make_ti(0x023479FD0E092DB0LL, 2),
 156                         TF_C(0x1.1A3CFE870496D8p+121)))
 157     return 1;
 158   if (test__floatuntitf(make_ti(0x023479FD0E092DB8LL, 3),
 159                         TF_C(0x1.1A3CFE870496DCp+121)))
 160     return 1;
 161   if (test__floatuntitf(make_ti(0x023479FD0E092DB6LL, 4),
 162                         TF_C(0x1.1A3CFE870496DBp+121)))
 163     return 1;
 164   if (test__floatuntitf(make_ti(0x023479FD0E092DBFLL, 5),
 165                         TF_C(0x1.1A3CFE870496DF8p+121)))
 166     return 1;
 167   if (test__floatuntitf(make_ti(0x023479FD0E092DC1LL, 6),
 168                         TF_C(0x1.1A3CFE870496E08p+121)))
 169     return 1;
 170   if (test__floatuntitf(make_ti(0x023479FD0E092DC7LL, 7),
 171                         TF_C(0x1.1A3CFE870496E38p+121)))
 172     return 1;
 173   if (test__floatuntitf(make_ti(0x023479FD0E092DC8LL, 8),
 174                         TF_C(0x1.1A3CFE870496E4p+121)))
 175     return 1;
 176   if (test__floatuntitf(make_ti(0x023479FD0E092DCFLL, 9),
 177                         TF_C(0x1.1A3CFE870496E78p+121)))
 178     return 1;
 179   if (test__floatuntitf(make_ti(0x023479FD0E092DD0LL, 0),
 180                         TF_C(0x1.1A3CFE870496E8p+121)))
 181     return 1;
 182   if (test__floatuntitf(make_ti(0x023479FD0E092DD1LL, 11),
 183                         TF_C(0x1.1A3CFE870496E88p+121)))
 184     return 1;
 185   if (test__floatuntitf(make_ti(0x023479FD0E092DD8LL, 12),
 186                         TF_C(0x1.1A3CFE870496ECp+121)))
 187     return 1;
 188   if (test__floatuntitf(make_ti(0x023479FD0E092DDFLL, 13),
 189                         TF_C(0x1.1A3CFE870496EF8p+121)))
 190     return 1;
 191   if (test__floatuntitf(make_ti(0x023479FD0E092DE0LL, 14),
 192                         TF_C(0x1.1A3CFE870496Fp+121)))
 193     return 1;
 194
 195   if (test__floatuntitf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL),
 196                         TF_C(0x1.FFFFFFFFFFFFFFFEp+63)))
 197     return 1;
 198
 199   if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x0000000000000000LL),
 200                         TF_C(0x1.FFFFFFFFFFFFFFFEp+127)))
 201     return 1;
 202   if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL),
 203                         TF_C(0x1.0000000000000000p+128)))
 204     return 1;
 205
 206   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC2801LL),
 207                         TF_C(0x1.23456789ABCDEF0123456789ABC3p+124)))
 208     return 1;
 209   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3000LL),
 210                         TF_C(0x1.23456789ABCDEF0123456789ABC3p+124)))
 211     return 1;
 212   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC37FFLL),
 213                         TF_C(0x1.23456789ABCDEF0123456789ABC3p+124)))
 214     return 1;
 215   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3800LL),
 216                         TF_C(0x1.23456789ABCDEF0123456789ABC4p+124)))
 217     return 1;
 218   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4000LL),
 219                         TF_C(0x1.23456789ABCDEF0123456789ABC4p+124)))
 220     return 1;
 221   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC47FFLL),
 222                         TF_C(0x1.23456789ABCDEF0123456789ABC4p+124)))
 223     return 1;
 224   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4800LL),
 225                         TF_C(0x1.23456789ABCDEF0123456789ABC4p+124)))
 226     return 1;
 227   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4801LL),
 228                         TF_C(0x1.23456789ABCDEF0123456789ABC5p+124)))
 229     return 1;
 230   if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC57FFLL),
 231                         TF_C(0x1.23456789ABCDEF0123456789ABC5p+124)))
 232     return 1;
 233 #else
 234   printf("skipped\n");
 235 #endif
 236   return 0;
 237 }