1/* Define aliases for libm double functions.
2 Copyright (C) 2017-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#ifndef _LIBM_ALIAS_DOUBLE_H
20#define _LIBM_ALIAS_DOUBLE_H
21
22#include <bits/floatn.h>
23
24#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
25# define libm_alias_double_other_r_f64(from, to, r) \
26 weak_alias (from ## r, to ## f64 ## r)
27#else
28# define libm_alias_double_other_r_f64(from, to, r)
29#endif
30
31#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
32# define libm_alias_double_other_r_f32x(from, to, r) \
33 weak_alias (from ## r, to ## f32x ## r)
34#else
35# define libm_alias_double_other_r_f32x(from, to, r)
36#endif
37
38/* Define _FloatN / _FloatNx aliases for a double libm function that
39 has internal name FROM ## R and public names TO ## suffix ## R for
40 each suffix of a supported _FloatN / _FloatNx floating-point type
41 with the same format as double. */
42#define libm_alias_double_other_r(from, to, r) \
43 libm_alias_double_other_r_f64 (from, to, r); \
44 libm_alias_double_other_r_f32x (from, to, r)
45
46/* Likewise, but without the R suffix. */
47#define libm_alias_double_other(from, to) \
48 libm_alias_double_other_r (from, to, )
49
50/* Define aliases for a double libm function that has internal name
51 FROM ## R and public names TO ## suffix ## R for each suffix of a
52 supported floating-point type with the same format as double. This
53 should only be used for functions where such public names exist for
54 _FloatN types, not for implementation-namespace exported names
55 (where there is one name per format, not per type) or for
56 obsolescent functions not provided for _FloatN types. */
57#ifdef NO_LONG_DOUBLE
58# define libm_alias_double_r(from, to, r) \
59 weak_alias (from ## r, to ## r) \
60 strong_alias (from ## r, from ## l ## r) \
61 weak_alias (from ## r, to ## l ## r); \
62 libm_alias_double_other_r (from, to, r)
63#else
64# define libm_alias_double_r(from, to, r) \
65 weak_alias (from ## r, to ## r); \
66 libm_alias_double_other_r (from, to, r)
67#endif
68
69/* Likewise, but without the R suffix. */
70#define libm_alias_double(from, to) libm_alias_double_r (from, to, )
71
72#endif
73