src/compiler-rt/test/builtins/Unit/floattidf_test.c

   1 //===-- floattidf.c - Test __floattidf ------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __floattidf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <float.h>
  16 #include <stdio.h>
  17
  18 #ifdef CRT_HAS_128BIT
  19
  20 // Returns: convert a to a double, rounding toward even.
  21
  22 // Assumption: double is a IEEE 64 bit floating point type
  23 //             ti_int is a 64 bit integral type
  24
  25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  26
  27 COMPILER_RT_ABI double __floattidf(ti_int a);
  28
  29 int test__floattidf(ti_int a, double expected)
  30 {
  31     double x = __floattidf(a);
  32     if (x != expected)
  33     {
  34         twords at;
  35         at.all = a;
  36         printf("error in __floattidf(0x%.16llX%.16llX) = %a, expected %a\n",
  37                at.s.high, at.s.low, x, expected);
  38     }
  39     return x != expected;
  40 }
  41
  42 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  43 char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
  44 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
  45
  46 #endif
  47
  48 int main()
  49 {
  50 #ifdef CRT_HAS_128BIT
  51     if (test__floattidf(0, 0.0))
  52         return 1;
  53
  54     if (test__floattidf(1, 1.0))
  55         return 1;
  56     if (test__floattidf(2, 2.0))
  57         return 1;
  58     if (test__floattidf(20, 20.0))
  59         return 1;
  60     if (test__floattidf(-1, -1.0))
  61         return 1;
  62     if (test__floattidf(-2, -2.0))
  63         return 1;
  64     if (test__floattidf(-20, -20.0))
  65         return 1;
  66
  67     if (test__floattidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  68         return 1;
  69     if (test__floattidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  70         return 1;
  71     if (test__floattidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  72         return 1;
  73     if (test__floattidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  74         return 1;
  75
  76     if (test__floattidf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
  77         return 1;
  78     if (test__floattidf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
  79         return 1;
  80     if (test__floattidf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
  81         return 1;
  82     if (test__floattidf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
  83         return 1;
  84
  85     if (test__floattidf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
  86         return 1;
  87     if (test__floattidf(make_ti(0x8000000000000001LL, 0), -0x1.000000p+127))
  88         return 1;
  89
  90     if (test__floattidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  91         return 1;
  92
  93     if (test__floattidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  94         return 1;
  95     if (test__floattidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  96         return 1;
  97     if (test__floattidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  98         return 1;
  99     if (test__floattidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
 100         return 1;
 101     if (test__floattidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
 102         return 1;
 103
 104     if (test__floattidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
 105         return 1;
 106     if (test__floattidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
 107         return 1;
 108     if (test__floattidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
 109         return 1;
 110     if (test__floattidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
 111         return 1;
 112     if (test__floattidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
 113         return 1;
 114
 115     if (test__floattidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 116         return 1;
 117     if (test__floattidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
 118         return 1;
 119     if (test__floattidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
 120         return 1;
 121     if (test__floattidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
 122         return 1;
 123     if (test__floattidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
 124         return 1;
 125     if (test__floattidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
 126         return 1;
 127     if (test__floattidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
 128         return 1;
 129     if (test__floattidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
 130         return 1;
 131     if (test__floattidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
 132         return 1;
 133     if (test__floattidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
 134         return 1;
 135     if (test__floattidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
 136         return 1;
 137     if (test__floattidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
 138         return 1;
 139     if (test__floattidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
 140         return 1;
 141     if (test__floattidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
 142         return 1;
 143     if (test__floattidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 144         return 1;
 145
 146     if (test__floattidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121))
 147         return 1;
 148     if (test__floattidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121))
 149         return 1;
 150     if (test__floattidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121))
 151         return 1;
 152     if (test__floattidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121))
 153         return 1;
 154     if (test__floattidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121))
 155         return 1;
 156     if (test__floattidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121))
 157         return 1;
 158     if (test__floattidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121))
 159         return 1;
 160     if (test__floattidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121))
 161         return 1;
 162     if (test__floattidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121))
 163         return 1;
 164     if (test__floattidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121))
 165         return 1;
 166     if (test__floattidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121))
 167         return 1;
 168     if (test__floattidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121))
 169         return 1;
 170     if (test__floattidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121))
 171         return 1;
 172     if (test__floattidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121))
 173         return 1;
 174     if (test__floattidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121))
 175         return 1;
 176 #else
 177     printf("skipped\n");
 178 #endif
 179    return 0;
 180 }