gcc/testsuite/gcc.dg/dfp/operator-arith-fold.c

   1 /* { dg-options "-std=gnu99 -O" } */
   2
   3 /* C99 6.5.5: Multiplicative operators.
   4    C99 6.5.6: Additive operators.  */
   5
   6 extern void link_error (void);
   7
   8 int
   9 main ()
  10 {
  11   _Decimal32 d32_1, d32_2;
  12
  13   /* Compare like-typed positive constants. */
  14   if (2.99df + 5.1df != 8.09df)
  15     link_error ();
  16
  17   if (5.77df - 2.22dd != 3.55df)
  18     link_error ();
  19
  20   if (2.0dl * 3.7dd * -2 != -14.8df)
  21     link_error ();
  22
  23   if (.18df / -.2df + 1 != 1.e-1dd)
  24     link_error ();
  25
  26   d32_1 = 3.0df;
  27   d32_2 = 1.0df;
  28
  29   if (!__builtin_constant_p (d32_1 + 0.2df))
  30     link_error ();
  31
  32   if (!__builtin_constant_p (1.0df / 3.0df))
  33     link_error ();
  34
  35   if (!__builtin_constant_p (d32_2 / d32_1))
  36     link_error ();
  37
  38   d32_2 = 2.0df;
  39   if (!__builtin_constant_p (d32_2 / d32_1))
  40     link_error ();
  41
  42   return 0;
  43 }