compiler-rt/test/builtins/Unit/trunctfdf2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_trunctfdf2
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 #if __LDBL_MANT_DIG__ == 113
   8
   9 #include "fp_test.h"
  10
  11 COMPILER_RT_ABI double __trunctfdf2(long double a);
  12
  13 int test__trunctfdf2(long double a, uint64_t expected)
  14 {
  15     double x = __trunctfdf2(a);
  16     int ret = compareResultD(x, expected);
  17
  18     if (ret)
  19     {
  20         printf("error in test__trunctfdf2(%.20Lf) = %lf, "
  21                "expected %lf\n", a, x, fromRep64(expected));
  22     }
  23     return ret;
  24 }
  25
  26 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
  27
  28 #endif
  29
  30 int main()
  31 {
  32 #if __LDBL_MANT_DIG__ == 113
  33     // qNaN
  34     if (test__trunctfdf2(makeQNaN128(),
  35                          UINT64_C(0x7ff8000000000000)))
  36         return 1;
  37     // NaN
  38     if (test__trunctfdf2(makeNaN128(UINT64_C(0x810000000000)),
  39                          UINT64_C(0x7ff8100000000000)))
  40         return 1;
  41     // inf
  42     if (test__trunctfdf2(makeInf128(),
  43                          UINT64_C(0x7ff0000000000000)))
  44         return 1;
  45     // zero
  46     if (test__trunctfdf2(0.0L, UINT64_C(0x0)))
  47         return 1;
  48
  49     if (test__trunctfdf2(0x1.af23456789bbaaab347645365cdep+5L,
  50                          UINT64_C(0x404af23456789bbb)))
  51         return 1;
  52     if (test__trunctfdf2(0x1.dedafcff354b6ae9758763545432p-9L,
  53                          UINT64_C(0x3f6dedafcff354b7)))
  54         return 1;
  55     if (test__trunctfdf2(0x1.2f34dd5f437e849b4baab754cdefp+4534L,
  56                          UINT64_C(0x7ff0000000000000)))
  57         return 1;
  58     if (test__trunctfdf2(0x1.edcbff8ad76ab5bf46463233214fp-435L,
  59                          UINT64_C(0x24cedcbff8ad76ab)))
  60         return 1;
  61
  62 #else
  63     printf("skipped\n");
  64
  65 #endif
  66     return 0;
  67 }