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/* Software floating-point emulation: comparison.
Copyright (C) 1997-2019 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);
}
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