1 /*
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright © 2021 Keith Packard
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * 3. Neither the name of the copyright holder nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
33 * OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include "math_config.h"
37
38 #if defined(FE_INEXACT) && !defined(PICOLIBC_LONG_DOUBLE_NOEXECPT) && defined(_NEED_FLOAT_HUGE)
39
40 #ifdef _DOUBLE_DOUBLE_FLOAT
41 static const FORCE_LONG_DOUBLE VAL = pick_long_double_except(LDBL_MIN, 0.0L);
42 static const FORCE_LONG_DOUBLE VAL1 = pick_long_double_except(LDBL_MAX, 0.0L);
43 #define eqn (1.0L + VAL + VAL1)
44 #else
45 static const FORCE_LONG_DOUBLE VAL = pick_long_double_except(LDBL_MIN, 0.0L);
46 #define eqn (1.0L + VAL)
47 #endif
48
49 HIDDEN void
__math_set_inexactl(void)50 __math_set_inexactl(void)
51 {
52 force_eval_long_double(eqn);
53 }
54
55 HIDDEN long double
__math_inexactl(long double val)56 __math_inexactl(long double val)
57 {
58 force_eval_long_double(eqn);
59 return val;
60 }
61
62 #endif
63
