1  extern void exit (int);
       2  extern void abort (void);
       3  
       4  float
       5  rintf (float x)
       6  {
       7    static const float TWO23 = 8388608.0;
       8  
       9    if (__builtin_fabs (x) < TWO23)
      10      {
      11        if (x > 0.0)
      12          {
      13            x += TWO23;
      14            x -= TWO23;
      15          }
      16        else if (x < 0.0)
      17          {
      18            x = TWO23 - x;
      19            x = -(x - TWO23);
      20          }
      21      }
      22  
      23    return x;
      24  }
      25  
      26  int main (void)
      27  {
      28    if (rintf (-1.5) != -2.0)
      29      abort ();
      30    exit (0);
      31  }