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8db73634 | 1 | /* Test for powl |
dff8da6b | 2 | Copyright (C) 2011-2024 Free Software Foundation, Inc. |
8db73634 L |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
8db73634 L |
18 | |
19 | #include <stdio.h> | |
20 | #include <math.h> | |
21 | #include <float.h> | |
22 | #include <ieee754.h> | |
23 | ||
29955b5d AS |
24 | static int |
25 | do_test (void) | |
8db73634 L |
26 | { |
27 | int result = 0; | |
28 | ||
51737193 | 29 | #if LDBL_MANT_DIG == 64 |
8db73634 L |
30 | { |
31 | long double x = 1e-20; | |
32 | union ieee854_long_double u; | |
33 | u.ieee.mantissa0 = 1; | |
34 | u.ieee.mantissa1 = 1; | |
35 | u.ieee.exponent = 0; | |
36 | u.ieee.negative = 0; | |
37 | (void) powl (0.2, u.d); | |
38 | x = powl (x, 1.5); | |
f5f312eb | 39 | if (fabsl (x - 1e-30) > 1e-10) |
8db73634 L |
40 | { |
41 | printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x); | |
42 | result = 1; | |
43 | } | |
44 | } | |
8db73634 L |
45 | #endif |
46 | ||
47 | return result; | |
48 | } | |
29955b5d AS |
49 | |
50 | #define TEST_FUNCTION do_test () | |
51 | #include "../test-skeleton.c" |