/* Software floating-point emulation: comparison.

   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 "local-soft-fp.h"

static long

internal_equality (long al, long ah, long bl, long bh, long neq)

{

  FP_DECL_EX;

  FP_DECL_Q(A); FP_DECL_Q(B);

  long r;

  AXP_UNPACK_RAW_Q(A, a);

  AXP_UNPACK_RAW_Q(B, b);

  if ((A_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(A))

       || (B_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(B)))

    {

      /* EQ and NE signal invalid operation only if either operand is SNaN.  */

      if (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B))

	{

	  FP_SET_EXCEPTION(FP_EX_INVALID);

	  FP_HANDLE_EXCEPTIONS;

	}

      return -1;

    }

  r = (A_e == B_e

       && _FP_FRAC_EQ_2 (A, B)

       && (A_s == B_s || (!A_e && _FP_FRAC_ZEROP_2(A))));

  r ^= neq;

  return r;

}

long

_OtsEqlX (long al, long ah, long bl, long bh)

{

  return internal_equality (al, ah, bl, bh, 0);

}

long

_OtsNeqX (long al, long ah, long bl, long bh)

{

  return internal_equality (al, ah, bl, bh, 1);

}