Exemplo n.º 1
0
__complex__ double
__ccos (__complex__ double x)
{
  __complex__ double y;

  __real__ y = -__imag__ x;
  __imag__ y = __real__ x;

  return __ccosh (y);
}
Exemplo n.º 2
0
__complex__ double
__ccos (__complex__ double x)
{
  __complex__ double res;

  if (!isfinite (__real__ x) || __isnan (__imag__ x))
    {
      if (__real__ x == 0.0 || __imag__ x == 0.0)
	{
	  __real__ res = __nan ("");
	  __imag__ res = 0.0;

#ifdef FE_INVALID
	  if (__isinf (__real__ x))
	    feraiseexcept (FE_INVALID);
#endif
	}
      else if (__isinf (__imag__ x))
	{
	  __real__ res = HUGE_VAL;
	  __imag__ res = __nan ("");

#ifdef FE_INVALID
	  if (__isinf (__real__ x))
	    feraiseexcept (FE_INVALID);
#endif
	}
      else
	{
	  __real__ res = __nan ("");
	  __imag__ res = __nan ("");

#ifdef FE_INVALID
	  if (isfinite (__imag__ x))
	    feraiseexcept (FE_INVALID);
#endif
	}
    }
  else
    {
      __complex__ double y;

      __real__ y = -__imag__ x;
      __imag__ y = __real__ x;

      res = __ccosh (y);
    }

  return res;
}