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

   1 //===-- fixxfti_test.c - Test __fixxfti -----------------------------------===//
   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 __fixxfti 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: long double is an intel 80 bit floating point type padded with 6 bytes
  22 //             su_int is a 32 bit integral type
  23 //             value in long double is representable in ti_int (no range checking performed)
  24
  25 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  26 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  27
  28 ti_int __fixxfti(long double a);
  29
  30 int test__fixxfti(long double a, ti_int expected)
  31 {
  32     ti_int x = __fixxfti(a);
  33     if (x != expected)
  34     {
  35         utwords xt;
  36         xt.all = x;
  37         utwords expectedt;
  38         expectedt.all = expected;
  39         printf("error in __fixxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  40                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  41     }
  42     return x != expected;
  43 }
  44
  45 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  46 char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
  47 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  48
  49 #endif
  50
  51 int main()
  52 {
  53 #if __x86_64
  54     if (test__fixxfti(0.0, 0))
  55         return 1;
  56
  57     if (test__fixxfti(0.5, 0))
  58         return 1;
  59     if (test__fixxfti(0.99, 0))
  60         return 1;
  61     if (test__fixxfti(1.0, 1))
  62         return 1;
  63     if (test__fixxfti(1.5, 1))
  64         return 1;
  65     if (test__fixxfti(1.99, 1))
  66         return 1;
  67     if (test__fixxfti(2.0, 2))
  68         return 1;
  69     if (test__fixxfti(2.01, 2))
  70         return 1;
  71     if (test__fixxfti(-0.5, 0))
  72         return 1;
  73     if (test__fixxfti(-0.99, 0))
  74         return 1;
  75     if (test__fixxfti(-1.0, -1))
  76         return 1;
  77     if (test__fixxfti(-1.5, -1))
  78         return 1;
  79     if (test__fixxfti(-1.99, -1))
  80         return 1;
  81     if (test__fixxfti(-2.0, -2))
  82         return 1;
  83     if (test__fixxfti(-2.01, -2))
  84         return 1;
  85
  86     if (test__fixxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  87         return 1;
  88     if (test__fixxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  89         return 1;
  90
  91     if (test__fixxfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
  92                                                0x8000008000000000LL)))
  93         return 1;
  94     if (test__fixxfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
  95                                                0x8000010000000000LL)))
  96         return 1;
  97
  98     if (test__fixxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  99         return 1;
 100     if (test__fixxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
 101         return 1;
 102
 103     if (test__fixxfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
 104                                                       0x8000000000000400LL)))
 105         return 1;
 106     if (test__fixxfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
 107                                                       0x8000000000000800LL)))
 108         return 1;
 109
 110     if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
 111         return 1;
 112     if (test__fixxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 113         return 1;
 114
 115     if (test__fixxfti(-0x1.0000000000000000p+63L, make_ti(0xFFFFFFFFFFFFFFFFLL,
 116                                                           0x8000000000000000LL)))
 117         return 1;
 118     if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
 119                                                           0x8000000000000001LL)))
 120         return 1;
 121     if (test__fixxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, make_ti(0xFFFFFFFFFFFFFFFFLL,
 122                                                           0x8000000000000002LL)))
 123         return 1;
 124
 125     if (test__fixxfti(0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
 126                                                           0x8000000000000000LL)))
 127         return 1;
 128     if (test__fixxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL,
 129                                                           0x0000000000000000LL)))
 130
 131         return 1;
 132
 133     if (test__fixxfti(-0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL,
 134                                                            0x0000000000000000LL)))
 135         return 1;
 136     if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFEp+126L, make_ti(0x8000000000000000LL,
 137                                                            0x8000000000000000LL)))
 138         return 1;
 139     if (test__fixxfti(-0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x8000000000000001LL,
 140                                                            0x0000000000000000LL)))
 141         return 1;
 142 #else
 143     printf("skipped\n");
 144 #endif
 145    return 0;
 146 }