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

   1 //===-- fixdfti_test.c - Test __fixdfti -----------------------------------===//
   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 __fixdfti for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #if __x86_64
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 // Returns: convert a to a signed long long, rounding toward zero.
  20
  21 // Assumption: double is a IEEE 64 bit floating point type
  22 //             su_int is a 32 bit integral type
  23 //             value in double is representable in ti_int (no range checking performed)
  24
  25 // seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  26
  27 ti_int __fixdfti(double a);
  28
  29 int test__fixdfti(double a, ti_int expected)
  30 {
  31     ti_int x = __fixdfti(a);
  32     if (x != expected)
  33     {
  34         twords xt;
  35         xt.all = x;
  36         twords expectedt;
  37         expectedt.all = expected;
  38         printf("error in __fixdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  39         a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  40     }
  41     return x != expected;
  42 }
  43
  44 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  45 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
  46 char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
  47
  48 #endif
  49
  50 int main()
  51 {
  52 #if __x86_64
  53     if (test__fixdfti(0.0, 0))
  54         return 1;
  55
  56     if (test__fixdfti(0.5, 0))
  57         return 1;
  58     if (test__fixdfti(0.99, 0))
  59         return 1;
  60     if (test__fixdfti(1.0, 1))
  61         return 1;
  62     if (test__fixdfti(1.5, 1))
  63         return 1;
  64     if (test__fixdfti(1.99, 1))
  65         return 1;
  66     if (test__fixdfti(2.0, 2))
  67         return 1;
  68     if (test__fixdfti(2.01, 2))
  69         return 1;
  70     if (test__fixdfti(-0.5, 0))
  71         return 1;
  72     if (test__fixdfti(-0.99, 0))
  73         return 1;
  74     if (test__fixdfti(-1.0, -1))
  75         return 1;
  76     if (test__fixdfti(-1.5, -1))
  77         return 1;
  78     if (test__fixdfti(-1.99, -1))
  79         return 1;
  80     if (test__fixdfti(-2.0, -2))
  81         return 1;
  82     if (test__fixdfti(-2.01, -2))
  83         return 1;
  84
  85     if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  86         return 1;
  87     if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  88         return 1;
  89
  90     if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
  91                                                0x8000008000000000LL)))
  92         return 1;
  93     if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
  94                                                0x8000010000000000LL)))
  95         return 1;
  96
  97     if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  98         return 1;
  99     if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
 100         return 1;
 101
 102     if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
 103                                                       0x8000000000000400LL)))
 104         return 1;
 105     if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
 106                                                       0x8000000000000800LL)))
 107         return 1;
 108
 109     if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))
 110         return 1;
 111     if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))
 112         return 1;
 113
 114     if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0)))
 115         return 1;
 116     if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0)))
 117         return 1;
 118
 119 #else
 120     printf("skipped\n");
 121 #endif
 122    return 0;
 123 }