sys/external/bsd/compiler_rt/dist/test/Unit/floatdixf_test.c

   1 //===-- floatdixf_test.c - Test __floatdixf -------------------------------===//
   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 __floatdixf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 #if HAS_80_BIT_LONG_DOUBLE
  18 // Returns: convert a to a long double, rounding toward even.
  19
  20 // Assumption: long double is a IEEE 80 bit floating point type padded to 128 bits
  21 //             di_int is a 64 bit integral type
  22
  23 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  24 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  25
  26 long double __floatdixf(di_int a);
  27
  28 int test__floatdixf(di_int a, long double expected)
  29 {
  30     long double x = __floatdixf(a);
  31     if (x != expected)
  32         printf("error in __floatdixf(%llX) = %LA, expected %LA\n",
  33                a, x, expected);
  34     return x != expected;
  35 }
  36
  37 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  38 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
  39 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  40 #endif
  41
  42 int main()
  43 {
  44 #if HAS_80_BIT_LONG_DOUBLE
  45     if (test__floatdixf(0, 0.0))
  46         return 1;
  47
  48     if (test__floatdixf(1, 1.0))
  49         return 1;
  50     if (test__floatdixf(2, 2.0))
  51         return 1;
  52     if (test__floatdixf(20, 20.0))
  53         return 1;
  54     if (test__floatdixf(-1, -1.0))
  55         return 1;
  56     if (test__floatdixf(-2, -2.0))
  57         return 1;
  58     if (test__floatdixf(-20, -20.0))
  59         return 1;
  60
  61     if (test__floatdixf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  62         return 1;
  63     if (test__floatdixf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  64         return 1;
  65     if (test__floatdixf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  66         return 1;
  67     if (test__floatdixf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  68         return 1;
  69
  70     if (test__floatdixf(0x8000008000000000LL, -0x1.FFFFFEp+62))
  71         return 1;
  72     if (test__floatdixf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
  73         return 1;
  74     if (test__floatdixf(0x8000010000000000LL, -0x1.FFFFFCp+62))
  75         return 1;
  76     if (test__floatdixf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
  77         return 1;
  78
  79     if (test__floatdixf(0x8000000000000000LL, -0x1.000000p+63))
  80         return 1;
  81     if (test__floatdixf(0x8000000000000001LL, -0x1.FFFFFFFFFFFFFFFCp+62L))
  82         return 1;
  83
  84     if (test__floatdixf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  85         return 1;
  86
  87     if (test__floatdixf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  88         return 1;
  89     if (test__floatdixf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  90         return 1;
  91     if (test__floatdixf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  92         return 1;
  93     if (test__floatdixf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
  94         return 1;
  95     if (test__floatdixf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
  96         return 1;
  97
  98     if (test__floatdixf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
  99         return 1;
 100     if (test__floatdixf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
 101         return 1;
 102     if (test__floatdixf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
 103         return 1;
 104     if (test__floatdixf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
 105         return 1;
 106     if (test__floatdixf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
 107         return 1;
 108
 109     if (test__floatdixf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 110         return 1;
 111     if (test__floatdixf(0x023479FD0E092DA1LL, 0x8.D1E7F43824B684p+54L))
 112         return 1;
 113     if (test__floatdixf(0x023479FD0E092DB0LL, 0x8.D1E7f43824B6Cp+54L))
 114         return 1;
 115     if (test__floatdixf(0x023479FD0E092DB8LL, 0x8.D1E7F43824B6Ep+54L))
 116         return 1;
 117     if (test__floatdixf(0x023479FD0E092DB6LL, 0x8.D1E7F43824B6D8p+54L))
 118         return 1;
 119     if (test__floatdixf(0x023479FD0E092DBFLL, 0x8.D1E7F43824B6FCp+54L))
 120         return 1;
 121     if (test__floatdixf(0x023479FD0E092DC1LL, 0x8.D1E7F43824B704p+54L))
 122         return 1;
 123     if (test__floatdixf(0x023479FD0E092DC7LL, 0x8.D1E7F43824B71Cp+54L))
 124         return 1;
 125     if (test__floatdixf(0x023479FD0E092DC8LL, 0x8.D1E7F43824B72p+54L))
 126         return 1;
 127     if (test__floatdixf(0x023479FD0E092DCFLL, 0x8.D1E7F43824B73Cp+54L))
 128         return 1;
 129     if (test__floatdixf(0x023479FD0E092DD0LL, 0x8.D1E7F43824B74p+54L))
 130         return 1;
 131     if (test__floatdixf(0x023479FD0E092DD1LL, 0x8.D1E7F43824B744p+54L))
 132         return 1;
 133     if (test__floatdixf(0x023479FD0E092DD8LL, 0x8.D1E7F43824B76p+54L))
 134         return 1;
 135     if (test__floatdixf(0x023479FD0E092DDFLL, 0x8.D1E7F43824B77Cp+54L))
 136         return 1;
 137     if (test__floatdixf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 138         return 1;
 139
 140 #else
 141     printf("skipped\n");
 142 #endif
 143    return 0;
 144 }