gcc/testsuite/gcc.dg/torture/builtin-fp-int-inexact.c

   1 /* Test -fno-fp-int-builtin-inexact.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-fno-fp-int-builtin-inexact" } */
   4 /* { dg-add-options c99_runtime } */
   5 /* { dg-require-effective-target fenv_exceptions } */
   6
   7 #include <fenv.h>
   8
   9 /* Define functions locally to ensure that if the calls are not
  10    expanded inline, failures do not occur because of libm raising
  11    "inexact".  */
  12
  13 #define LOCAL_FN(NAME, TYPE)                    \
  14   __attribute__ ((noinline, noclone)) TYPE      \
  15   NAME (TYPE x)                                 \
  16   {                                             \
  17     return x;                                   \
  18   }
  19
  20 #define LOCAL_FNS(NAME)                         \
  21   LOCAL_FN (NAME, double)                       \
  22   LOCAL_FN (NAME ## f, float)                   \
  23   LOCAL_FN (NAME ## l, long double)
  24
  25 LOCAL_FNS (ceil)
  26 LOCAL_FNS (floor)
  27 LOCAL_FNS (round)
  28 LOCAL_FNS (trunc)
  29
  30 extern void abort (void);
  31 extern void exit (int);
  32
  33 #define TEST(FN, TYPE)                          \
  34   do                                            \
  35     {                                           \
  36       volatile TYPE a = 1.5, b;                 \
  37       b = FN (a);                               \
  38       if (fetestexcept (FE_INEXACT))            \
  39         abort ();                               \
  40     }                                           \
  41   while (0)
  42
  43 #define FN_TESTS(FN)                                    \
  44   do                                                    \
  45     {                                                   \
  46       TEST (__builtin_ ## FN, double);                  \
  47       TEST (__builtin_ ## FN ## f, float);              \
  48       TEST (__builtin_ ## FN ## l, long double);        \
  49     }                                                   \
  50   while (0)
  51
  52 static void
  53 main_test (void)
  54 {
  55   FN_TESTS (ceil);
  56   FN_TESTS (floor);
  57   FN_TESTS (round);
  58   FN_TESTS (trunc);
  59 }
  60
  61 /* This file may be included by architecture-specific tests.  */
  62
  63 #ifndef ARCH_MAIN
  64
  65 int
  66 main (void)
  67 {
  68   main_test ();
  69   exit (0);
  70 }
  71
  72 #endif