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      1 //===-- floatuntixf.c - Test __floatuntixf --------------------------------===//
      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 __floatuntixf 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 long double, rounding toward even.
     21 
     22 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
     23 //             tu_int is a 128 bit integral type
     24 
     25 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
     26 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
     27 
     28 COMPILER_RT_ABI long double __floatuntixf(tu_int a);
     29 
     30 int test__floatuntixf(tu_int a, long double expected)
     31 {
     32     long double x = __floatuntixf(a);
     33     if (x != expected)
     34     {
     35         utwords at;
     36         at.all = a;
     37         printf("error in __floatuntixf(0x%.16llX%.16llX) = %LA, expected %LA\n",
     38                at.s.high, at.s.low, x, expected);
     39     }
     40     return x != expected;
     41 }
     42 
     43 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
     44 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
     45 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
     46 
     47 #endif
     48 
     49 int main()
     50 {
     51 #ifdef CRT_HAS_128BIT
     52     if (test__floatuntixf(0, 0.0))
     53         return 1;
     54 
     55     if (test__floatuntixf(1, 1.0))
     56         return 1;
     57     if (test__floatuntixf(2, 2.0))
     58         return 1;
     59     if (test__floatuntixf(20, 20.0))
     60         return 1;
     61 
     62     if (test__floatuntixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
     63         return 1;
     64     if (test__floatuntixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
     65         return 1;
     66     if (test__floatuntixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
     67         return 1;
     68     if (test__floatuntixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
     69         return 1;
     70     if (test__floatuntixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
     71         return 1;
     72     if (test__floatuntixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
     73         return 1;
     74     if (test__floatuntixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
     75         return 1;
     76 
     77     if (test__floatuntixf(0x8000008000000000ULL, 0x8.000008p+60))
     78         return 1;
     79     if (test__floatuntixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
     80         return 1;
     81     if (test__floatuntixf(0x8000010000000000ULL, 0x8.00001p+60))
     82         return 1;
     83     if (test__floatuntixf(0x8000000000001000ULL, 0x8.000000000001p+60))
     84         return 1;
     85 
     86     if (test__floatuntixf(0x8000000000000000ULL, 0x8p+60))
     87         return 1;
     88     if (test__floatuntixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
     89         return 1;
     90 
     91     if (test__floatuntixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
     92         return 1;
     93 
     94     if (test__floatuntixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
     95         return 1;
     96     if (test__floatuntixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
     97         return 1;
     98     if (test__floatuntixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
     99         return 1;
    100     if (test__floatuntixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
    101         return 1;
    102     if (test__floatuntixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
    103         return 1;
    104 
    105     if (test__floatuntixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
    106         return 1;
    107     if (test__floatuntixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
    108         return 1;
    109     if (test__floatuntixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
    110         return 1;
    111     if (test__floatuntixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
    112         return 1;
    113     if (test__floatuntixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
    114         return 1;
    115 
    116     if (test__floatuntixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
    117         return 1;
    118     if (test__floatuntixf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
    119         return 1;
    120     if (test__floatuntixf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
    121         return 1;
    122     if (test__floatuntixf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
    123         return 1;
    124     if (test__floatuntixf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
    125         return 1;
    126     if (test__floatuntixf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
    127         return 1;
    128     if (test__floatuntixf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
    129         return 1;
    130     if (test__floatuntixf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
    131         return 1;
    132     if (test__floatuntixf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
    133         return 1;
    134     if (test__floatuntixf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
    135         return 1;
    136     if (test__floatuntixf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
    137         return 1;
    138     if (test__floatuntixf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
    139         return 1;
    140     if (test__floatuntixf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
    141         return 1;
    142     if (test__floatuntixf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
    143         return 1;
    144     if (test__floatuntixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
    145         return 1;
    146 
    147     if (test__floatuntixf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
    148         return 1;
    149     if (test__floatuntixf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
    150         return 1;
    151     if (test__floatuntixf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
    152         return 1;
    153     if (test__floatuntixf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
    154         return 1;
    155     if (test__floatuntixf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
    156         return 1;
    157     if (test__floatuntixf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
    158         return 1;
    159     if (test__floatuntixf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
    160         return 1;
    161     if (test__floatuntixf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
    162         return 1;
    163     if (test__floatuntixf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
    164         return 1;
    165     if (test__floatuntixf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
    166         return 1;
    167     if (test__floatuntixf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
    168         return 1;
    169     if (test__floatuntixf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
    170         return 1;
    171     if (test__floatuntixf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
    172         return 1;
    173     if (test__floatuntixf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
    174         return 1;
    175     if (test__floatuntixf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
    176         return 1;
    177 
    178     if (test__floatuntixf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
    179         return 1;
    180 
    181     if (test__floatuntixf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x0000000000000000LL),
    182                           0x1.FFFFFFFFFFFFFFFEp+127L))
    183         return 1;
    184     if (test__floatuntixf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL),
    185                           0x1.0000000000000000p+128L))
    186         return 1;
    187 
    188     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456100000000001LL),
    189                         0x1.2345678901234562p+108L))
    190         return 1;
    191     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456200000000000LL),
    192                         0x1.2345678901234562p+108L))
    193         return 1;
    194     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34562FFFFFFFFFFFLL),
    195                         0x1.2345678901234562p+108L))
    196         return 1;
    197     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456300000000000LL),
    198                         0x1.2345678901234564p+108L))
    199         return 1;
    200     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456400000000000LL),
    201                         0x1.2345678901234564p+108L))
    202         return 1;
    203     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34564FFFFFFFFFFFLL),
    204                         0x1.2345678901234564p+108L))
    205         return 1;
    206     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456500000000000LL),
    207                         0x1.2345678901234564p+108L))
    208         return 1;
    209     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x3456500000000001LL),
    210                         0x1.2345678901234566p+108L))
    211         return 1;
    212     if (test__floatuntixf(make_ti(0x0000123456789012LL, 0x34566FFFFFFFFFFFLL),
    213                         0x1.2345678901234566p+108L))
    214         return 1;
    215 #else
    216     printf("skipped\n");
    217 #endif
    218    return 0;
    219 }
    220