gcc/testsuite/gcc.dg/torture/builtin-sin-mpfr-1.c

   1 /* Version 2.2.0 of MPFR had bugs in sin rounding.  This test checks
   2    to see if that buggy version was installed.  The problem is fixed
   3    in version 2.2.1 and presumably later MPFR versions.
   4
   5    Origin: Kaveh R. Ghazi 10/23/2006.  */
   6
   7 /* { dg-do link } */
   8
   9 extern void link_error (int, double, double);
  10
  11 #define TESTIT(ARG,RES) do { \
  12   if (sizeof (double) == 8 && __builtin_sin(ARG) != RES) \
  13     link_error(__LINE__, __builtin_sin(ARG), RES); \
  14   } while (0);
  15
  16 int main()
  17 {
  18   TESTIT (-0x1.c0016155c4da3p-1, -0x1.88fc58bcf030dp-1);
  19
  20   TESTIT (0x1.30654d85c2756p-2, 0x1.2beeb9de27a79p-2);
  21
  22   TESTIT (0x1.fe68ccaa8e201p+2, 0x1.fc3f0c54e97a7p-1);
  23
  24   /* This case should always pass.  */
  25   TESTIT (0.0, 0.0);
  26
  27   return 0;
  28 }
  29