/* Software floating-point emulation.

   (*c) = (*a) - (*b)

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

   This file is part of the GNU C Library.

   Contributed by Richard Henderson (rth@cygnus.com) 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, see

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

#include "soft-fp.h"

#include "quad.h"

void _Qp_sub(long double *c, const long double *a, const long double *b)

{

  FP_DECL_EX;

  FP_DECL_Q(A); FP_DECL_Q(B); FP_DECL_Q(C);

  FP_INIT_ROUNDMODE;

  FP_UNPACK_SEMIRAW_QP(A, a);

  FP_UNPACK_SEMIRAW_QP(B, b);

  FP_SUB_Q(C, A, B);

  FP_PACK_SEMIRAW_QP(c, C);

  QP_HANDLE_EXCEPTIONS(__asm (

"	ldd [%1], %%f52\n"

"	ldd [%1+8], %%f54\n"

"	ldd [%2], %%f56\n"

"	ldd [%2+8], %%f58\n"

"	fsubq %%f52, %%f56, %%f60\n"

"	std %%f60, [%0]\n"

"	std %%f62, [%0+8]\n"

"	" : : "r" (c), "r" (a), "r" (b) : QP_CLOBBER));

}