return 0;
return 1;
fesetround (int round){  unsigned short int cw;  if ((round & ~0x3) != 0)    /* ROUND is no valid rounding mode.  */    return 0;  /* Get current state.  */  _FPU_GETCW (cw);  /* Set rounding bits.  */  cw &= ~0x3;  cw |= round;  /* Set new state.  */  _FPU_SETCW (cw);  return 1;}