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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floattixf
   3 // REQUIRES: x86-target-arch
   4
   5 #include "int_lib.h"
   6 #include <float.h>
   7 #include <stdio.h>
   8
   9 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  10
  11 // Returns: convert a to a long double, rounding toward even.
  12
  13 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  14 //             ti_int is a 128 bit integral type
  15
  16 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  17 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  18
  19 COMPILER_RT_ABI long double __floattixf(ti_int a);
  20
  21 int test__floattixf(ti_int a, long double expected)
  22 {
  23     long double x = __floattixf(a);
  24     if (x != expected)
  25     {
  26         twords at;
  27         at.all = a;
  28         printf("error in __floattixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
  29                at.s.high, at.s.low, x, expected);
  30     }
  31     return x != expected;
  32 }
  33
  34 COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
  35 COMPILE_TIME_ASSERT(sizeof(ti_int)*CHAR_BIT == 128);
  36 COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
  37
  38 #endif
  39
  40 int main()
  41 {
  42 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  43     if (test__floattixf(0, 0.0))
  44         return 1;
  45
  46     if (test__floattixf(1, 1.0))
  47         return 1;
  48     if (test__floattixf(2, 2.0))
  49         return 1;
  50     if (test__floattixf(20, 20.0))
  51         return 1;
  52     if (test__floattixf(-1, -1.0))
  53         return 1;
  54     if (test__floattixf(-2, -2.0))
  55         return 1;
  56     if (test__floattixf(-20, -20.0))
  57         return 1;
  58
  59     if (test__floattixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  60         return 1;
  61     if (test__floattixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  62         return 1;
  63     if (test__floattixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  64         return 1;
  65     if (test__floattixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  66         return 1;
  67
  68     if (test__floattixf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
  69         return 1;
  70     if (test__floattixf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
  71         return 1;
  72     if (test__floattixf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
  73         return 1;
  74     if (test__floattixf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
  75         return 1;
  76
  77     if (test__floattixf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
  78         return 1;
  79     if (test__floattixf(make_ti(0x8000000000000001LL, 0), -0x1.FFFFFFFFFFFFFFFCp+126L))
  80         return 1;
  81
  82     if (test__floattixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  83         return 1;
  84
  85     if (test__floattixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  86         return 1;
  87     if (test__floattixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  88         return 1;
  89     if (test__floattixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  90         return 1;
  91     if (test__floattixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
  92         return 1;
  93     if (test__floattixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
  94         return 1;
  95
  96     if (test__floattixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
  97         return 1;
  98     if (test__floattixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
  99         return 1;
 100     if (test__floattixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
 101         return 1;
 102     if (test__floattixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
 103         return 1;
 104     if (test__floattixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
 105         return 1;
 106
 107     if (test__floattixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 108         return 1;
 109     if (test__floattixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
 110         return 1;
 111     if (test__floattixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
 112         return 1;
 113     if (test__floattixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
 114         return 1;
 115     if (test__floattixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
 116         return 1;
 117     if (test__floattixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
 118         return 1;
 119     if (test__floattixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
 120         return 1;
 121     if (test__floattixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
 122         return 1;
 123     if (test__floattixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
 124         return 1;
 125     if (test__floattixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
 126         return 1;
 127     if (test__floattixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
 128         return 1;
 129     if (test__floattixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
 130         return 1;
 131     if (test__floattixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
 132         return 1;
 133     if (test__floattixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
 134         return 1;
 135     if (test__floattixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 136         return 1;
 137
 138     if (test__floattixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
 139         return 1;
 140     if (test__floattixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
 141         return 1;
 142     if (test__floattixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
 143         return 1;
 144     if (test__floattixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
 145         return 1;
 146     if (test__floattixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
 147         return 1;
 148     if (test__floattixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
 149         return 1;
 150     if (test__floattixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
 151         return 1;
 152     if (test__floattixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
 153         return 1;
 154     if (test__floattixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
 155         return 1;
 156     if (test__floattixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
 157         return 1;
 158     if (test__floattixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
 159         return 1;
 160     if (test__floattixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
 161         return 1;
 162     if (test__floattixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
 163         return 1;
 164     if (test__floattixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
 165         return 1;
 166     if (test__floattixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
 167         return 1;
 168
 169     if (test__floattixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
 170         return 1;
 171
 172     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL),
 173                         0x1.2345678901234562p+108L))
 174         return 1;
 175     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL),
 176                         0x1.2345678901234562p+108L))
 177         return 1;
 178     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL),
 179                         0x1.2345678901234562p+108L))
 180         return 1;
 181     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL),
 182                         0x1.2345678901234564p+108L))
 183         return 1;
 184     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL),
 185                         0x1.2345678901234564p+108L))
 186         return 1;
 187     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL),
 188                         0x1.2345678901234564p+108L))
 189         return 1;
 190     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL),
 191                         0x1.2345678901234564p+108L))
 192         return 1;
 193     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL),
 194                         0x1.2345678901234566p+108L))
 195         return 1;
 196     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL),
 197                         0x1.2345678901234566p+108L))
 198         return 1;
 199 #else
 200     printf("skipped\n");
 201 #endif
 202    return 0;
 203 }