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

   1 //===-- floatdidf.c - Test __floatdidf ------------------------------------===//
   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 __floatdidf for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <float.h>
  16 #include <stdio.h>
  17
  18 // Returns: convert a to a double, rounding toward even.
  19
  20 // Assumption: double is a IEEE 64 bit floating point type
  21 //             di_int is a 64 bit integral type
  22
  23 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  24
  25 double __floatdidf(di_int a);
  26
  27 int test__floatdidf(di_int a, double expected)
  28 {
  29     double x = __floatdidf(a);
  30     if (x != expected)
  31         printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected);
  32     return x != expected;
  33 }
  34
  35 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  36 char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
  37 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
  38
  39 int main()
  40 {
  41     if (test__floatdidf(0, 0.0))
  42         return 1;
  43
  44     if (test__floatdidf(1, 1.0))
  45         return 1;
  46     if (test__floatdidf(2, 2.0))
  47         return 1;
  48     if (test__floatdidf(20, 20.0))
  49         return 1;
  50     if (test__floatdidf(-1, -1.0))
  51         return 1;
  52     if (test__floatdidf(-2, -2.0))
  53         return 1;
  54     if (test__floatdidf(-20, -20.0))
  55         return 1;
  56
  57     if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
  58         return 1;
  59     if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
  60         return 1;
  61     if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
  62         return 1;
  63     if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
  64         return 1;
  65
  66     if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62))
  67         return 1;
  68     if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
  69         return 1;
  70     if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62))
  71         return 1;
  72     if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
  73         return 1;
  74
  75     if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63))
  76         return 1;
  77     if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63))
  78         return 1;
  79
  80     if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
  81         return 1;
  82
  83     if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
  84         return 1;
  85     if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
  86         return 1;
  87     if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
  88         return 1;
  89     if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
  90         return 1;
  91     if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
  92         return 1;
  93
  94     if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
  95         return 1;
  96     if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
  97         return 1;
  98     if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
  99         return 1;
 100     if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
 101         return 1;
 102     if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
 103         return 1;
 104
 105     if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
 106         return 1;
 107     if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
 108         return 1;
 109     if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
 110         return 1;
 111     if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
 112         return 1;
 113     if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
 114         return 1;
 115     if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
 116         return 1;
 117     if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
 118         return 1;
 119     if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
 120         return 1;
 121     if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
 122         return 1;
 123     if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
 124         return 1;
 125     if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
 126         return 1;
 127     if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
 128         return 1;
 129     if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
 130         return 1;
 131     if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
 132         return 1;
 133     if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
 134         return 1;
 135
 136    return 0;
 137 }