/* Complex cosine hyperbole function.  m68k fpu version

   Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library.  If not, see

   <http://www.gnu.org/licenses/>.  */

#include <complex.h>

#include <math.h>

#include "mathimpl.h"

#define s(name) M_SUF (name)

#define m81(func) __m81_u(s(func))

CFLOAT

s(__ccosh) (CFLOAT x)

{

  CFLOAT retval;

  unsigned long ix_cond = __m81_test (__imag__ x);

  if ((ix_cond & (__M81_COND_INF|__M81_COND_NAN)) == 0)

    {

      /* Imaginary part is finite.  */

      FLOAT sin_ix, cos_ix;

      __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix)

	     : "f" (__imag__ x));

      __real__ retval = cos_ix * m81(__ieee754_cosh) (__real__ x);

      if (ix_cond & __M81_COND_ZERO)

	__imag__ retval = (signbit (__real__ x)

			   ? -__imag__ x : __imag__ x);

      else

	__imag__ retval = sin_ix * m81(__ieee754_sinh) (__real__ x);

    }

  else

    {

      unsigned long rx_cond = __m81_test (__real__ x);

      if (rx_cond & __M81_COND_ZERO)

	{

	  __real__ retval = __imag__ x - __imag__ x;

	  __imag__ retval = __real__ x;

	}

      else

	{

	  if (rx_cond & __M81_COND_INF)

	    __real__ retval = s(fabs) (__real__ x);

	  else

	    __real__ retval = s(__nan) ("");

	  __imag__ retval = __imag__ x - __imag__ x;

	}

    }

  return retval;

}

declare_mgen_alias (__ccosh, ccosh)