gcc/testsuite/gcc.dg/torture/float128-extend-nan.c

   1 /* Test extensions to __float128 quiet signaling NaNs.  */
   2 /* { dg-do run } */
   3 /* { dg-options "-fsignaling-nans" } */
   4 /* { dg-require-effective-target __float128 } */
   5 /* { dg-require-effective-target base_quadfloat_support } */
   6 /* { dg-require-effective-target fenv_exceptions } */
   7 /* { dg-add-options __float128 } */
   8
   9 #include <fenv.h>
  10 #include <float.h>
  11 #include <stdlib.h>
  12
  13 volatile long double a = __builtin_nansl ("");
  14
  15 int
  16 main (void)
  17 {
  18 #if LDBL_MANT_DIG < 113
  19   volatile __float128 r = a;
  20   feclearexcept (FE_INVALID);
  21   r += 1;
  22   if (fetestexcept (FE_INVALID))
  23     abort ();
  24 #endif
  25   exit (0);
  26 }