compiler-rt/test/builtins/Unit/fixunsxfti_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_fixunsxfti
   3 // REQUIRES: x86-target-arch
   4
   5 #include "int_lib.h"
   6 #include <stdio.h>
   7
   8 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
   9
  10 // Returns: convert a to a unsigned long long, rounding toward zero.
  11 //          Negative values all become zero.
  12
  13 // Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
  14 //             tu_int is a 64 bit integral type
  15 //             value in long double is representable in tu_int or is negative
  16 //                 (no range checking performed)
  17
  18 // gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
  19 // 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
  20
  21 COMPILER_RT_ABI tu_int __fixunsxfti(long double a);
  22
  23 int test__fixunsxfti(long double a, tu_int expected)
  24 {
  25     tu_int x = __fixunsxfti(a);
  26     if (x != expected)
  27     {
  28         utwords xt;
  29         xt.all = x;
  30         utwords expectedt;
  31         expectedt.all = expected;
  32         printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
  33                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  34     }
  35     return x != expected;
  36 }
  37
  38 char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
  39 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
  40 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  41
  42 #endif
  43
  44 int main()
  45 {
  46 #if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
  47     if (test__fixunsxfti(0.0, 0))
  48         return 1;
  49
  50     if (test__fixunsxfti(0.5, 0))
  51         return 1;
  52     if (test__fixunsxfti(0.99, 0))
  53         return 1;
  54     if (test__fixunsxfti(1.0, 1))
  55         return 1;
  56     if (test__fixunsxfti(1.5, 1))
  57         return 1;
  58     if (test__fixunsxfti(1.99, 1))
  59         return 1;
  60     if (test__fixunsxfti(2.0, 2))
  61         return 1;
  62     if (test__fixunsxfti(2.01, 2))
  63         return 1;
  64     if (test__fixunsxfti(-0.5, 0))
  65         return 1;
  66     if (test__fixunsxfti(-0.99, 0))
  67         return 1;
  68     if (test__fixunsxfti(-1.0, 0))
  69         return 1;
  70     if (test__fixunsxfti(-1.5, 0))
  71         return 1;
  72     if (test__fixunsxfti(-1.99, 0))
  73         return 1;
  74     if (test__fixunsxfti(-2.0, 0))
  75         return 1;
  76     if (test__fixunsxfti(-2.01, 0))
  77         return 1;
  78
  79     if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
  80         return 1;
  81     if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
  82         return 1;
  83
  84     if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
  85         return 1;
  86     if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
  87         return 1;
  88
  89     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
  90         return 1;
  91     if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
  92         return 1;
  93
  94     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
  95         return 1;
  96     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
  97         return 1;
  98
  99     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
 100         return 1;
 101     if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
 102         return 1;
 103     if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
 104         return 1;
 105     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
 106         return 1;
 107     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
 108         return 1;
 109
 110     if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
 111         return 1;
 112     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
 113         return 1;
 114     if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
 115         return 1;
 116
 117     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
 118         return 1;
 119     if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
 120         return 1;
 121     if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
 122         return 1;
 123     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
 124         return 1;
 125     if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
 126         return 1;
 127
 128 #else
 129     printf("skipped\n");
 130 #endif
 131    return 0;
 132 }