return 0;
return 1;
fesetround (int round){  fenv_union_t u;  if ((unsigned int) round > 3)    return 0;  /* Get the current state.  */  u.fenv = fegetenv_register ();  /* Set the relevant bits.  */  u.l[1] = (u.l[1] & ~3)  |  (round & 3);  /* Put the new state in effect.  */  fesetenv_register (u.fenv);  return 1;}