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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatundixf
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7
   8 #if HAS_80_BIT_LONG_DOUBLE
   9 // Returns: convert a to a long double, rounding toward even.
  10
  11 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  12 //             du_int is a 64 bit integral type
  13
  14 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  15 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  16
  17 COMPILER_RT_ABI long double __floatundixf(du_int a);
  18
  19 int test__floatundixf(du_int a, long double expected)
  20 {
  21     long double x = __floatundixf(a);
  22     if (x != expected)
  23         printf("error in __floatundixf(%llX) = %LA, expected %LA\n",
  24                a, x, expected);
  25     return x != expected;
  26 }
  27
  28 char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
  29 char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
  30 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  31 #endif
  32
  33 int main()
  34 {
  35 #if HAS_80_BIT_LONG_DOUBLE
  36     if (test__floatundixf(0, 0.0))
  37         return 1;
  38
  39     if (test__floatundixf(1, 1.0))
  40         return 1;
  41     if (test__floatundixf(2, 2.0))
  42         return 1;
  43     if (test__floatundixf(20, 20.0))
  44         return 1;
  45
  46     if (test__floatundixf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
  47         return 1;
  48     if (test__floatundixf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
  49         return 1;
  50     if (test__floatundixf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
  51         return 1;
  52     if (test__floatundixf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
  53         return 1;
  54     if (test__floatundixf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
  55         return 1;
  56     if (test__floatundixf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
  57         return 1;
  58     if (test__floatundixf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
  59         return 1;
  60
  61     if (test__floatundixf(0x8000008000000000ULL, 0x8.000008p+60))
  62         return 1;
  63     if (test__floatundixf(0x8000000000000800ULL, 0x8.0000000000008p+60))
  64         return 1;
  65     if (test__floatundixf(0x8000010000000000ULL, 0x8.00001p+60))
  66         return 1;
  67     if (test__floatundixf(0x8000000000001000ULL, 0x8.000000000001p+60))
  68         return 1;
  69
  70     if (test__floatundixf(0x8000000000000000ULL, 0x8p+60))
  71         return 1;
  72     if (test__floatundixf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
  73         return 1;
  74
  75     if (test__floatundixf(0x0007FB72E8000000ULL, 0x1.FEDCBAp+50))
  76         return 1;
  77
  78     if (test__floatundixf(0x0007FB72EA000000ULL, 0x1.FEDCBA8p+50))
  79         return 1;
  80     if (test__floatundixf(0x0007FB72EB000000ULL, 0x1.FEDCBACp+50))
  81         return 1;
  82     if (test__floatundixf(0x0007FB72EBFFFFFFULL, 0x1.FEDCBAFFFFFFCp+50))
  83         return 1;
  84     if (test__floatundixf(0x0007FB72EC000000ULL, 0x1.FEDCBBp+50))
  85         return 1;
  86     if (test__floatundixf(0x0007FB72E8000001ULL, 0x1.FEDCBA0000004p+50))
  87         return 1;
  88
  89     if (test__floatundixf(0x0007FB72E6000000ULL, 0x1.FEDCB98p+50))
  90         return 1;
  91     if (test__floatundixf(0x0007FB72E7000000ULL, 0x1.FEDCB9Cp+50))
  92         return 1;
  93     if (test__floatundixf(0x0007FB72E7FFFFFFULL, 0x1.FEDCB9FFFFFFCp+50))
  94         return 1;
  95     if (test__floatundixf(0x0007FB72E4000001ULL, 0x1.FEDCB90000004p+50))
  96         return 1;
  97     if (test__floatundixf(0x0007FB72E4000000ULL, 0x1.FEDCB9p+50))
  98         return 1;
  99
 100     if (test__floatundixf(0x023479FD0E092DC0ULL, 0x1.1A3CFE870496Ep+57))
 101         return 1;
 102     if (test__floatundixf(0x023479FD0E092DA1ULL, 0x8.D1E7F43824B684p+54L))
 103         return 1;
 104     if (test__floatundixf(0x023479FD0E092DB0ULL, 0x8.D1E7f43824B6Cp+54L))
 105         return 1;
 106     if (test__floatundixf(0x023479FD0E092DB8ULL, 0x8.D1E7F43824B6Ep+54L))
 107         return 1;
 108     if (test__floatundixf(0x023479FD0E092DB6ULL, 0x8.D1E7F43824B6D8p+54L))
 109         return 1;
 110     if (test__floatundixf(0x023479FD0E092DBFULL, 0x8.D1E7F43824B6FCp+54L))
 111         return 1;
 112     if (test__floatundixf(0x023479FD0E092DC1ULL, 0x8.D1E7F43824B704p+54L))
 113         return 1;
 114     if (test__floatundixf(0x023479FD0E092DC7ULL, 0x8.D1E7F43824B71Cp+54L))
 115         return 1;
 116     if (test__floatundixf(0x023479FD0E092DC8ULL, 0x8.D1E7F43824B72p+54L))
 117         return 1;
 118     if (test__floatundixf(0x023479FD0E092DCFULL, 0x8.D1E7F43824B73Cp+54L))
 119         return 1;
 120     if (test__floatundixf(0x023479FD0E092DD0ULL, 0x8.D1E7F43824B74p+54L))
 121         return 1;
 122     if (test__floatundixf(0x023479FD0E092DD1ULL, 0x8.D1E7F43824B744p+54L))
 123         return 1;
 124     if (test__floatundixf(0x023479FD0E092DD8ULL, 0x8.D1E7F43824B76p+54L))
 125         return 1;
 126     if (test__floatundixf(0x023479FD0E092DDFULL, 0x8.D1E7F43824B77Cp+54L))
 127         return 1;
 128     if (test__floatundixf(0x023479FD0E092DE0ULL, 0x1.1A3CFE870496Fp+57))
 129         return 1;
 130
 131 #else
 132     printf("skipped\n");
 133 #endif
 134    return 0;
 135 }