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8db73634 L |
1 | /* Test for powl |
2 | Copyright (C) 2011 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, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <math.h> | |
22 | #include <float.h> | |
23 | #include <ieee754.h> | |
24 | ||
25 | int | |
26 | main (void) | |
27 | { | |
28 | int result = 0; | |
29 | ||
30 | #ifndef NO_LONG_DOUBLE | |
31 | # if LDBL_MANT_DIG == 64 | |
32 | { | |
33 | long double x = 1e-20; | |
34 | union ieee854_long_double u; | |
35 | u.ieee.mantissa0 = 1; | |
36 | u.ieee.mantissa1 = 1; | |
37 | u.ieee.exponent = 0; | |
38 | u.ieee.negative = 0; | |
39 | (void) powl (0.2, u.d); | |
40 | x = powl (x, 1.5); | |
f5f312eb | 41 | if (fabsl (x - 1e-30) > 1e-10) |
8db73634 L |
42 | { |
43 | printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x); | |
44 | result = 1; | |
45 | } | |
46 | } | |
47 | # endif | |
48 | #endif | |
49 | ||
50 | return result; | |
51 | } |