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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_fixunstfti
   3 // UNSUPPORTED: target=mips{{.*}}
   4
   5 #include <stdio.h>
   6
   7
   8 #if __LDBL_MANT_DIG__ == 113
   9
  10 #include "fp_test.h"
  11 #include "int_lib.h"
  12
  13 // Returns: convert a to a unsigned long long, rounding toward zero.
  14 //          Negative values all become zero.
  15
  16 // Assumption: long double is a 128 bit floating point type
  17 //             tu_int is a 128 bit integral type
  18 //             value in long double is representable in tu_int or is negative
  19 //                 (no range checking performed)
  20
  21 COMPILER_RT_ABI tu_int __fixunstfti(long double a);
  22
  23 int test__fixunstfti(long double a, tu_int expected)
  24 {
  25     tu_int x = __fixunstfti(a);
  26     if (x != expected)
  27     {
  28         twords xt;
  29         xt.all = x;
  30
  31         twords expectedt;
  32         expectedt.all = expected;
  33
  34         printf("error in __fixunstfti(%.20Lf) = 0x%.16llX%.16llX, "
  35                "expected 0x%.16llX%.16llX\n",
  36                a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
  37     }
  38     return x != expected;
  39 }
  40
  41 char assumption_1[sizeof(tu_int) == 4*sizeof(su_int)] = {0};
  42 char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
  43 char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
  44
  45 #endif
  46
  47 int main()
  48 {
  49 #if __LDBL_MANT_DIG__ == 113
  50     if (test__fixunstfti(makeInf128(), make_ti(0xffffffffffffffffLL,
  51                                                0xffffffffffffffffLL)))
  52         return 1;
  53
  54     if (test__fixunstfti(0.0, 0))
  55         return 1;
  56
  57     if (test__fixunstfti(0.5, 0))
  58         return 1;
  59     if (test__fixunstfti(0.99, 0))
  60         return 1;
  61     if (test__fixunstfti(1.0, 1))
  62         return 1;
  63     if (test__fixunstfti(1.5, 1))
  64         return 1;
  65     if (test__fixunstfti(1.99, 1))
  66         return 1;
  67     if (test__fixunstfti(2.0, 2))
  68         return 1;
  69     if (test__fixunstfti(2.01, 2))
  70         return 1;
  71     if (test__fixunstfti(-0.01, 0))
  72         return 1;
  73     if (test__fixunstfti(-0.99, 0))
  74         return 1;
  75
  76     if (test__fixunstfti(0x1.p+128, make_ti(0xffffffffffffffffLL,
  77                                             0xffffffffffffffffLL)))
  78         return 1;
  79
  80     if (test__fixunstfti(0x1.FFFFFEp+126, make_ti(0x7fffff8000000000LL, 0x0)))
  81         return 1;
  82     if (test__fixunstfti(0x1.FFFFFEp+127, make_ti(0xffffff0000000000LL, 0x0)))
  83         return 1;
  84     if (test__fixunstfti(0x1.FFFFFEp+128, make_ti(0xffffffffffffffffLL,
  85                                                   0xffffffffffffffffLL)))
  86         return 1;
  87     if (test__fixunstfti(0x1.FFFFFEp+129, make_ti(0xffffffffffffffffLL,
  88                                                   0xffffffffffffffffLL)))
  89         return 1;
  90
  91 #else
  92     printf("skipped\n");
  93 #endif
  94    return 0;
  95 }