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 //===-- floattixf.c - Test __floattixf ------------------------------------===//
   6 //
   7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   8 // See https://llvm.org/LICENSE.txt for license information.
   9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  10 //
  11 //===----------------------------------------------------------------------===//
  12 //
  13 // This file tests __floattixf for the compiler_rt library.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #include "int_lib.h"
  18 #include <float.h>
  19 #include <stdio.h>
  20
  21 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  22
  23 // Returns: convert a to a long double, rounding toward even.
  24
  25 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  26 //             ti_int is a 128 bit integral type
  27
  28 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  29 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  30
  31 COMPILER_RT_ABI long double __floattixf(ti_int a);
  32
  33 int test__floattixf(ti_int a, long double expected)
  34 {
  35     long double x = __floattixf(a);
  36     if (x != expected)
  37     {
  38         twords at;
  39         at.all = a;
  40         printf("error in __floattixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
  41                at.s.high, at.s.low, x, expected);
  42     }
  43     return x != expected;
  44 }
  45
  46 COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
  47 COMPILE_TIME_ASSERT(sizeof(ti_int)*CHAR_BIT == 128);
  48 COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
  49
  50 #endif
  51
  52 int main()
  53 {
  54 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  55     if (test__floattixf(0, 0.0))
  56         return 1;
  57
  58     if (test__floattixf(1, 1.0))
  59         return 1;
  60     if (test__floattixf(2, 2.0))
  61         return 1;
  62     if (test__floattixf(20, 20.0))
  63         return 1;
  64     if (test__floattixf(-1, -1.0))
  65         return 1;
  66     if (test__floattixf(-2, -2.0))
  67         return 1;
  68     if (test__floattixf(-20, -20.0))
  69         return 1;
  70
  71     if (test__floattixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  72         return 1;
  73     if (test__floattixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  74         return 1;
  75     if (test__floattixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  76         return 1;
  77     if (test__floattixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  78         return 1;
  79
  80     if (test__floattixf(make_ti(0x8000008000000000LL, 0), -0x1.FFFFFEp+126))
  81         return 1;
  82     if (test__floattixf(make_ti(0x8000000000000800LL, 0), -0x1.FFFFFFFFFFFFEp+126))
  83         return 1;
  84     if (test__floattixf(make_ti(0x8000010000000000LL, 0), -0x1.FFFFFCp+126))
  85         return 1;
  86     if (test__floattixf(make_ti(0x8000000000001000LL, 0), -0x1.FFFFFFFFFFFFCp+126))
  87         return 1;
  88
  89     if (test__floattixf(make_ti(0x8000000000000000LL, 0), -0x1.000000p+127))
  90         return 1;
  91     if (test__floattixf(make_ti(0x8000000000000001LL, 0), -0x1.FFFFFFFFFFFFFFFCp+126L))
  92         return 1;
  93
  94     if (test__floattixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  95         return 1;
  96
  97     if (test__floattixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  98         return 1;
  99     if (test__floattixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
 100         return 1;
 101     if (test__floattixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
 102         return 1;
 103     if (test__floattixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
 104         return 1;
 105     if (test__floattixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
 106         return 1;
 107
 108     if (test__floattixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
 109         return 1;
 110     if (test__floattixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
 111         return 1;
 112     if (test__floattixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
 113         return 1;
 114     if (test__floattixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
 115         return 1;
 116     if (test__floattixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
 117         return 1;
 118
 119     if (test__floattixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 120         return 1;
 121     if (test__floattixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
 122         return 1;
 123     if (test__floattixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
 124         return 1;
 125     if (test__floattixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
 126         return 1;
 127     if (test__floattixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
 128         return 1;
 129     if (test__floattixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
 130         return 1;
 131     if (test__floattixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
 132         return 1;
 133     if (test__floattixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
 134         return 1;
 135     if (test__floattixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
 136         return 1;
 137     if (test__floattixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
 138         return 1;
 139     if (test__floattixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
 140         return 1;
 141     if (test__floattixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
 142         return 1;
 143     if (test__floattixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
 144         return 1;
 145     if (test__floattixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
 146         return 1;
 147     if (test__floattixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 148         return 1;
 149
 150     if (test__floattixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
 151         return 1;
 152     if (test__floattixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
 153         return 1;
 154     if (test__floattixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
 155         return 1;
 156     if (test__floattixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
 157         return 1;
 158     if (test__floattixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
 159         return 1;
 160     if (test__floattixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
 161         return 1;
 162     if (test__floattixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
 163         return 1;
 164     if (test__floattixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
 165         return 1;
 166     if (test__floattixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
 167         return 1;
 168     if (test__floattixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
 169         return 1;
 170     if (test__floattixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
 171         return 1;
 172     if (test__floattixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
 173         return 1;
 174     if (test__floattixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
 175         return 1;
 176     if (test__floattixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
 177         return 1;
 178     if (test__floattixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
 179         return 1;
 180
 181     if (test__floattixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
 182         return 1;
 183
 184     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL),
 185                         0x1.2345678901234562p+108L))
 186         return 1;
 187     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL),
 188                         0x1.2345678901234562p+108L))
 189         return 1;
 190     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL),
 191                         0x1.2345678901234562p+108L))
 192         return 1;
 193     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL),
 194                         0x1.2345678901234564p+108L))
 195         return 1;
 196     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL),
 197                         0x1.2345678901234564p+108L))
 198         return 1;
 199     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL),
 200                         0x1.2345678901234564p+108L))
 201         return 1;
 202     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL),
 203                         0x1.2345678901234564p+108L))
 204         return 1;
 205     if (test__floattixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL),
 206                         0x1.2345678901234566p+108L))
 207         return 1;
 208     if (test__floattixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL),
 209                         0x1.2345678901234566p+108L))
 210         return 1;
 211 #else
 212     printf("skipped\n");
 213 #endif
 214    return 0;
 215 }