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/* Compute sine and cosine of argument.

   Copyright (C) 1997, 1999 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and

                  Jakub Jelinek <jj@ultra.linux.cz>.

   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, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#include "quadmath-imp.h"

void

sincosq (__float128 x, __float128 *sinx, __float128 *cosx)

{

  int64_t ix;

  /* High word of x. */

  GET_FLT128_MSW64 (ix, x);

  /* |x| ~< pi/4 */

  ix &= 0x7fffffffffffffffLL;

  if (ix <= 0x3ffe921fb54442d1LL)

    __quadmath_kernel_sincosq (x, 0.0Q, sinx, cosx, 0);

  else if (ix >= 0x7fff000000000000LL)

    {

      /* sin(Inf or NaN) is NaN */

      *sinx = *cosx = x - x;

    }

  else

    {

      /* Argument reduction needed.  */

      __float128 y[2];

      int n;

      n = __quadmath_rem_pio2q (x, y);

      switch (n & 3)

        {

        case 0:

          __quadmath_kernel_sincosq (y[0], y[1], sinx, cosx, 1);

          break;

        case 1:

          __quadmath_kernel_sincosq (y[0], y[1], cosx, sinx, 1);

          *cosx = -*cosx;

          break;

        case 2:

          __quadmath_kernel_sincosq (y[0], y[1], sinx, cosx, 1);

          *sinx = -*sinx;

          *cosx = -*cosx;

          break;

        default:

          __quadmath_kernel_sincosq (y[0], y[1], cosx, sinx, 1);

          *sinx = -*sinx;

          break;

        }

    }

}