mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/* Total order operation on absolute values. ldbl-96 version.
|
|
Copyright (C) 2016-2023 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 <float.h>
|
|
#include <math.h>
|
|
#include <math_private.h>
|
|
#include <libm-alias-ldouble.h>
|
|
#include <nan-high-order-bit.h>
|
|
#include <stdint.h>
|
|
#include <shlib-compat.h>
|
|
#include <first-versions.h>
|
|
|
|
int
|
|
__totalordermagl (const long double *x, const long double *y)
|
|
{
|
|
uint16_t expx, expy;
|
|
uint32_t hx, hy;
|
|
uint32_t lx, ly;
|
|
GET_LDOUBLE_WORDS (expx, hx, lx, *x);
|
|
GET_LDOUBLE_WORDS (expy, hy, ly, *y);
|
|
expx &= 0x7fff;
|
|
expy &= 0x7fff;
|
|
if (LDBL_MIN_EXP == -16382)
|
|
{
|
|
/* M68K variant: for the greatest exponent, the high mantissa
|
|
bit is not significant and both values of it are valid, so
|
|
set it before comparing. For the Intel variant, only one
|
|
value of the high mantissa bit is valid for each exponent, so
|
|
this is not necessary. */
|
|
if (expx == 0x7fff)
|
|
hx |= 0x80000000;
|
|
if (expy == 0x7fff)
|
|
hy |= 0x80000000;
|
|
}
|
|
#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
|
|
# error not implemented
|
|
#endif
|
|
return expx < expy || (expx == expy && (hx < hy || (hx == hy && lx <= ly)));
|
|
}
|
|
#ifdef SHARED
|
|
# define CONCATX(x, y) x ## y
|
|
# define CONCAT(x, y) CONCATX (x, y)
|
|
# define UNIQUE_ALIAS(name) CONCAT (name, __COUNTER__)
|
|
# define do_symbol(orig_name, name, aliasname) \
|
|
strong_alias (orig_name, name) \
|
|
versioned_symbol (libm, name, aliasname, GLIBC_2_31)
|
|
# undef weak_alias
|
|
# define weak_alias(name, aliasname) \
|
|
do_symbol (name, UNIQUE_ALIAS (name), aliasname);
|
|
#endif
|
|
libm_alias_ldouble (__totalordermag, totalordermag)
|
|
#if SHLIB_COMPAT (libm, GLIBC_2_25, GLIBC_2_31)
|
|
int
|
|
attribute_compat_text_section
|
|
__totalordermag_compatl (long double x, long double y)
|
|
{
|
|
return __totalordermagl (&x, &y);
|
|
}
|
|
#undef do_symbol
|
|
#define do_symbol(orig_name, name, aliasname) \
|
|
strong_alias (orig_name, name) \
|
|
compat_symbol (libm, name, aliasname, \
|
|
CONCAT (FIRST_VERSION_libm_, aliasname))
|
|
libm_alias_ldouble (__totalordermag_compat, totalordermag)
|
|
#endif
|