C++ (Cpp) TEST_INF_NAN Exemples

Exemple #1

Fichier : e_hypotf.c Projet : gf-chen/glibc

float
__ieee754_hypotf (float x, float y)
{
  TEST_INF_NAN (x, y);

  return __ieee754_sqrt ((double) x * x + (double) y * y);
}

Exemple #2

Fichier : e_hypot.c Projet : kraj/glibc

double
__ieee754_hypot (double x, double y)
{
  x = fabs (x);
  y = fabs (y);

  TEST_INF_NAN (x, y);

  if (y > x)
    {
      double t = x;
      x = y;
      y = t;
    }
  if (y == 0.0)
    return x;
  /* if y is higher enough, y * 2^60 might overflow. The tests if
     y >= 1.7976931348623157e+308/2^60 (two60factor) and uses the
     appropriate check to avoid the overflow exception generation.  */
  if (y > two60factor)
    {
      if ((x / y) > two60)
	return x + y;
    }
  else
    {
      if (x > (y * two60))
	return x + y;
    }
  if (x > two500)
    {
      x *= twoM600;
      y *= twoM600;
      return __ieee754_sqrt (x * x + y * y) / twoM600;
    }
  if (y < twoM500)
    {
      if (y <= pdnum)
	{
	  x *= two1022;
	  y *= two1022;
	  double ret = __ieee754_sqrt (x * x + y * y) / two1022;
	  math_check_force_underflow_nonneg (ret);
	  return ret;
	}
      else
	{
	  x *= two600;
	  y *= two600;
	  return __ieee754_sqrt (x * x + y * y) / two600;
	}
    }
  return __ieee754_sqrt (x * x + y * y);
}