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

   1 //===-- fixunsxfti_test.c - Test __fixunsxfti -----------------------------===//
   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 __fixunsxfti 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 unsigned long long, rounding toward zero.
  20 //          Negative values all become zero.
  21
  22 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
  23 //             tu_int is a 64 bit integral type
  24 //             value in long double is representable in tu_int or is negative
  25 //                 (no range checking performed)
  26
  27 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  28 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  29
  30 tu_int __fixunsxfti(long double a);
  31
  32 int test__fixunsxfti(long double a, tu_int expected)
  33 {
  34     tu_int x = __fixunsxfti(a);
  35     if (x != expected)
  36     {
  37         utwords xt;
  38         xt.all = x;
  39         utwords expectedt;
  40         expectedt.all = expected;
  41         printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  42                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  43     }
  44     return x != expected;
  45 }
  46
  47 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
  48 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
  49 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  50
  51 #endif
  52
  53 int main()
  54 {
  55 #if __x86_64
  56     if (test__fixunsxfti(0.0, 0))
  57         return 1;
  58
  59     if (test__fixunsxfti(0.5, 0))
  60         return 1;
  61     if (test__fixunsxfti(0.99, 0))
  62         return 1;
  63     if (test__fixunsxfti(1.0, 1))
  64         return 1;
  65     if (test__fixunsxfti(1.5, 1))
  66         return 1;
  67     if (test__fixunsxfti(1.99, 1))
  68         return 1;
  69     if (test__fixunsxfti(2.0, 2))
  70         return 1;
  71     if (test__fixunsxfti(2.01, 2))
  72         return 1;
  73     if (test__fixunsxfti(-0.5, 0))
  74         return 1;
  75     if (test__fixunsxfti(-0.99, 0))
  76         return 1;
  77     if (test__fixunsxfti(-1.0, 0))
  78         return 1;
  79     if (test__fixunsxfti(-1.5, 0))
  80         return 1;
  81     if (test__fixunsxfti(-1.99, 0))
  82         return 1;
  83     if (test__fixunsxfti(-2.0, 0))
  84         return 1;
  85     if (test__fixunsxfti(-2.01, 0))
  86         return 1;
  87
  88     if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  89         return 1;
  90     if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  91         return 1;
  92
  93     if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
  94         return 1;
  95     if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
  96         return 1;
  97
  98     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  99         return 1;
 100     if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
 101         return 1;
 102
 103     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
 104         return 1;
 105     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
 106         return 1;
 107
 108     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
 109         return 1;
 110     if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
 111         return 1;
 112     if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
 113         return 1;
 114     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
 115         return 1;
 116     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 117         return 1;
 118
 119     if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
 120         return 1;
 121     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
 122         return 1;
 123     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
 124         return 1;
 125
 126     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
 127         return 1;
 128     if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
 129         return 1;
 130     if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
 131         return 1;
 132     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
 133         return 1;
 134     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
 135         return 1;
 136
 137 #else
 138     printf("skipped\n");
 139 #endif
 140    return 0;
 141 }