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/* Test __atomic routines for existence and proper execution on 1 byte 
   values with each valid memory model.  */
/* { dg-do run } */
/* { dg-require-effective-target sync_char_short } */
 
/* Test the execution of the __atomic_exchange_n builtin for a char.  */
 
extern void abort(void);
 
char v, count, ret;
 
main ()
{
  v = 0;
  count = 0;
 
  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) !=  count++) 
    abort ();
 
  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) !=  count++) 
    abort ();
 
  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) !=  count++) 
    abort ();
 
  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) !=  count++) 
    abort ();
 
  if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) !=  count++) 
    abort ();
 
  /* Now test the generic version.  */
 
  count++;
 
  __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
  if (ret != count - 1 || v != count)
    abort ();
  count++;
 
  __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
  if (ret != count - 1 || v != count)
    abort ();
  count++;
 
  __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
  if (ret != count - 1 || v != count)
    abort ();
  count++;
 
  __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
  if (ret != count - 1 || v != count)
    abort ();
  count++;
 
  __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
  if (ret != count - 1 || v != count)
    abort ();
  count++;
 
  return 0;
}