43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/* Test whether X == Y.
|
|
Copyright (C) 2016-2022 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <fenv.h>
|
|
#include <math.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;
|
|
}
|