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

   1 //===-- floatundixf_test.c - Test __floatundixf ---------------------------===//
   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 __floatundixf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17
  18 #if HAS_80_BIT_LONG_DOUBLE
  19 // Returns: convert a to a long double, rounding toward even.
  20
  21 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  22 //             du_int is a 64 bit integral type
  23
  24 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  25 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  26
  27 COMPILER_RT_ABI long double __floatundixf(du_int a);
  28
  29 int test__floatundixf(du_int a, long double expected)
  30 {
  31     long double x = __floatundixf(a);
  32     if (x != expected)
  33         printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
  34                a, x, expected);
  35     return x != expected;
  36 }
  37
  38 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
  39 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
  40 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  41 #endif
  42
  43 int main()
  44 {
  45 #if HAS_80_BIT_LONG_DOUBLE
  46     if (test__floatundixf(0, 0.0))
  47         return 1;
  48
  49     if (test__floatundixf(1, 1.0))
  50         return 1;
  51     if (test__floatundixf(2, 2.0))
  52         return 1;
  53     if (test__floatundixf(20, 20.0))
  54         return 1;
  55
  56     if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
  57         return 1;
  58     if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
  59         return 1;
  60     if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
  61         return 1;
  62     if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
  63         return 1;
  64     if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
  65         return 1;
  66     if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
  67         return 1;
  68     if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
  69         return 1;
  70
  71     if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
  72         return 1;
  73     if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
  74         return 1;
  75     if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
  76         return 1;
  77     if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
  78         return 1;
  79
  80     if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
  81         return 1;
  82     if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
  83         return 1;
  84
  85     if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
  86         return 1;
  87
  88     if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
  89         return 1;
  90     if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
  91         return 1;
  92     if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
  93         return 1;
  94     if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
  95         return 1;
  96     if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
  97         return 1;
  98
  99     if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
 100         return 1;
 101     if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
 102         return 1;
 103     if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
 104         return 1;
 105     if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
 106         return 1;
 107     if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
 108         return 1;
 109
 110     if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
 111         return 1;
 112     if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
 113         return 1;
 114     if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
 115         return 1;
 116     if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
 117         return 1;
 118     if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
 119         return 1;
 120     if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
 121         return 1;
 122     if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
 123         return 1;
 124     if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
 125         return 1;
 126     if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
 127         return 1;
 128     if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
 129         return 1;
 130     if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
 131         return 1;
 132     if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
 133         return 1;
 134     if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
 135         return 1;
 136     if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
 137         return 1;
 138     if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
 139         return 1;
 140
 141 #else
 142     printf("skipped\n");
 143 #endif
 144    return 0;
 145 }