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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatdixf
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 #if HAS_80_BIT_LONG_DOUBLE
   8 // Returns: convert a to a long double, rounding toward even.
   9
  10 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  11 //             di_int is a 64 bit integral type
  12
  13 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  14 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  15
  16 long COMPILER_RT_ABI double __floatdixf(di_int a);
  17
  18 int test__floatdixf(di_int a, long double expected)
  19 {
  20     long double x = __floatdixf(a);
  21     if (x != expected)
  22         printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
  23                a, x, expected);
  24     return x != expected;
  25 }
  26
  27 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  28 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
  29 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  30 #endif
  31
  32 int main()
  33 {
  34 #if HAS_80_BIT_LONG_DOUBLE
  35     if (test__floatdixf(0, 0.0))
  36         return 1;
  37
  38     if (test__floatdixf(1, 1.0))
  39         return 1;
  40     if (test__floatdixf(2, 2.0))
  41         return 1;
  42     if (test__floatdixf(20, 20.0))
  43         return 1;
  44     if (test__floatdixf(-1, -1.0))
  45         return 1;
  46     if (test__floatdixf(-2, -2.0))
  47         return 1;
  48     if (test__floatdixf(-20, -20.0))
  49         return 1;
  50
  51     if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  52         return 1;
  53     if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  54         return 1;
  55     if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  56         return 1;
  57     if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  58         return 1;
  59
  60     if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
  61         return 1;
  62     if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
  63         return 1;
  64     if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
  65         return 1;
  66     if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
  67         return 1;
  68
  69     if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
  70         return 1;
  71     if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
  72         return 1;
  73
  74     if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  75         return 1;
  76
  77     if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  78         return 1;
  79     if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  80         return 1;
  81     if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  82         return 1;
  83     if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
  84         return 1;
  85     if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
  86         return 1;
  87
  88     if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
  89         return 1;
  90     if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
  91         return 1;
  92     if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
  93         return 1;
  94     if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
  95         return 1;
  96     if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
  97         return 1;
  98
  99     if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 100         return 1;
 101     if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
 102         return 1;
 103     if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
 104         return 1;
 105     if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
 106         return 1;
 107     if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
 108         return 1;
 109     if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
 110         return 1;
 111     if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
 112         return 1;
 113     if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
 114         return 1;
 115     if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
 116         return 1;
 117     if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
 118         return 1;
 119     if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
 120         return 1;
 121     if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
 122         return 1;
 123     if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
 124         return 1;
 125     if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
 126         return 1;
 127     if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 128         return 1;
 129
 130 #else
 131     printf("skipped\n");
 132 #endif
 133    return 0;
 134 }