src/compiler-rt/test/builtins/Unit/fixunstfti_test.c

   1 //===-- fixunstfti_test.c - Test __fixunstfti -----------------------------===//
   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 __fixunstfti for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include <stdio.h>
  15
  16 #if __LDBL_MANT_DIG__ == 113
  17
  18 #include "fp_test.h"
  19 #include "int_lib.h"
  20
  21 // Returns: convert a to a unsigned long long, rounding toward zero.
  22 //          Negative values all become zero.
  23
  24 // Assumption: long double is a 128 bit floating point type
  25 //             tu_int is a 128 bit integral type
  26 //             value in long double is representable in tu_int or is negative
  27 //                 (no range checking performed)
  28
  29 COMPILER_RT_ABI tu_int __fixunstfti(long double a);
  30
  31 int test__fixunstfti(long double a, tu_int expected)
  32 {
  33     tu_int x = __fixunstfti(a);
  34     if (x != expected)
  35     {
  36         twords xt;
  37         xt.all = x;
  38
  39         twords expectedt;
  40         expectedt.all = expected;
  41
  42         printf("error in __fixunstfti(%.20Lf) = 0x%.16llX%.16llX, "
  43                "expected 0x%.16llX%.16llX\n",
  44                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  45     }
  46     return x != expected;
  47 }
  48
  49 char assumption_1[sizeof(tu_int) == 4*sizeof(su_int)] = {0};
  50 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
  51 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  52
  53 #endif
  54
  55 int main()
  56 {
  57 #if __LDBL_MANT_DIG__ == 113
  58     if (test__fixunstfti(makeInf128(), make_ti(0xffffffffffffffffLL,
  59                                                0xffffffffffffffffLL)))
  60         return 1;
  61
  62     if (test__fixunstfti(0.0, 0))
  63         return 1;
  64
  65     if (test__fixunstfti(0.5, 0))
  66         return 1;
  67     if (test__fixunstfti(0.99, 0))
  68         return 1;
  69     if (test__fixunstfti(1.0, 1))
  70         return 1;
  71     if (test__fixunstfti(1.5, 1))
  72         return 1;
  73     if (test__fixunstfti(1.99, 1))
  74         return 1;
  75     if (test__fixunstfti(2.0, 2))
  76         return 1;
  77     if (test__fixunstfti(2.01, 2))
  78         return 1;
  79     if (test__fixunstfti(-0.01, 0))
  80         return 1;
  81     if (test__fixunstfti(-0.99, 0))
  82         return 1;
  83
  84     if (test__fixunstfti(0x1.p+128, make_ti(0xffffffffffffffffLL,
  85                                             0xffffffffffffffffLL)))
  86         return 1;
  87
  88     if (test__fixunstfti(0x1.FFFFFEp+126, make_ti(0x7fffff8000000000LL, 0x0)))
  89         return 1;
  90     if (test__fixunstfti(0x1.FFFFFEp+127, make_ti(0xffffff0000000000LL, 0x0)))
  91         return 1;
  92     if (test__fixunstfti(0x1.FFFFFEp+128, make_ti(0xffffffffffffffffLL,
  93                                                   0xffffffffffffffffLL)))
  94         return 1;
  95     if (test__fixunstfti(0x1.FFFFFEp+129, make_ti(0xffffffffffffffffLL,
  96                                                   0xffffffffffffffffLL)))
  97         return 1;
  98
  99 #else
 100     printf("skipped\n");
 101 #endif
 102    return 0;
 103 }