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/* Test whether X == Y.
Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <errno.h>
#include <fenv.h>
#include <math.h>
#include <math_private.h>
#include <stdbool.h>
#include <fix-fp-int-compare-invalid.h>
int
M_DECL_FUNC (__iseqsig) (FLOAT x, FLOAT y)
{
/* Comparing <= and >= is sufficient to determine both whether X and
Y are equal, and whether they are unordered, while raising the
"invalid" exception if they are unordered. */
bool cmp1 = x <= y;
bool cmp2 = x >= y;
if (cmp1 && cmp2)
return 1;
else if (!cmp1 && !cmp2)
{
if (FIX_COMPARE_INVALID)
__feraiseexcept (FE_INVALID);
__set_errno (EDOM);
}
return 0;
}
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