C++ (Cpp) END_LONG_DOUBLE_ROUNDING Exemples

Exemple #1

Fichier : test-float.c Projet : Prelude-SIEM/libidmef

int
main ()
{
  test_float ();
  test_double ();

  {
    DECL_LONG_DOUBLE_ROUNDING

    BEGIN_LONG_DOUBLE_ROUNDING ();

    test_long_double ();

    END_LONG_DOUBLE_ROUNDING ();
  }

  return 0;
}

Exemple #2

Fichier : ldexpl.c Projet : komh/gnulib-os2

long double
ldexpl (long double x, int exp)
{
  long double factor;
  int bit;
  DECL_LONG_DOUBLE_ROUNDING

  BEGIN_LONG_DOUBLE_ROUNDING ();

  /* Check for zero, nan and infinity. */
  if (!(isnanl (x) || x + x == x))
    {
      if (exp < 0)
        {
          exp = -exp;
          factor = 0.5L;
        }
      else
        factor = 2.0L;

      if (exp > 0)
        for (bit = 1;;)
          {
            /* Invariant: Here bit = 2^i, factor = 2^-2^i or = 2^2^i,
               and bit <= exp.  */
            if (exp & bit)
              x *= factor;
            bit <<= 1;
            if (bit > exp)
              break;
            factor = factor * factor;
          }
    }

  END_LONG_DOUBLE_ROUNDING ();

  return x;
}