1 | /* Test for powl |
2 | Copyright (C) 2011-2022 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 | #include <stdio.h> |
20 | #include <math.h> |
21 | #include <float.h> |
22 | #include <ieee754.h> |
23 | |
24 | static int |
25 | do_test (void) |
26 | { |
27 | int result = 0; |
28 | |
29 | #if LDBL_MANT_DIG == 64 |
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 (x: 0.2, y: u.d); |
38 | x = powl (x: x, y: 1.5); |
39 | if (fabsl (x: x - 1e-30) > 1e-10) |
40 | { |
41 | printf (format: "powl (1e-20, 1.5): wrong result: %Lg\n" , x); |
42 | result = 1; |
43 | } |
44 | } |
45 | #endif |
46 | |
47 | return result; |
48 | } |
49 | |
50 | #define TEST_FUNCTION do_test () |
51 | #include "../test-skeleton.c" |
52 | |