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/* Total order operation. flt-32 version.
Copyright (C) 2016-2017 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 <math.h>
#include <math_private.h>
#include <libm-alias-float.h>
#include <nan-high-order-bit.h>
#include <stdint.h>
int
__totalorderf (float x, float y)
{
int32_t ix, iy;
GET_FLOAT_WORD (ix, x);
GET_FLOAT_WORD (iy, y);
#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
/* For the preferred quiet NaN convention, this operation is a
comparison of the representations of the arguments interpreted as
sign-magnitude integers. If both arguments are NaNs, invert the
quiet/signaling bit so comparing that way works. */
if ((ix & 0x7fffffff) > 0x7f800000 && (iy & 0x7fffffff) > 0x7f800000)
{
ix ^= 0x00400000;
iy ^= 0x00400000;
}
#endif
uint32_t ix_sign = ix >> 31;
uint32_t iy_sign = iy >> 31;
ix ^= ix_sign >> 1;
iy ^= iy_sign >> 1;
return ix <= iy;
}
libm_alias_float (__totalorder, totalorder)
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