lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Test for powl |
| 2 | Copyright (C) 2011-2015 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 | <http://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 | #ifndef NO_LONG_DOUBLE |
| 30 | # if LDBL_MANT_DIG == 64 |
| 31 | { |
| 32 | long double x = 1e-20; |
| 33 | union ieee854_long_double u; |
| 34 | u.ieee.mantissa0 = 1; |
| 35 | u.ieee.mantissa1 = 1; |
| 36 | u.ieee.exponent = 0; |
| 37 | u.ieee.negative = 0; |
| 38 | (void) powl (0.2, u.d); |
| 39 | x = powl (x, 1.5); |
| 40 | if (fabsl (x - 1e-30) > 1e-10) |
| 41 | { |
| 42 | printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x); |
| 43 | result = 1; |
| 44 | } |
| 45 | } |
| 46 | # endif |
| 47 | #endif |
| 48 | |
| 49 | return result; |
| 50 | } |
| 51 | |
| 52 | #define TEST_FUNCTION do_test () |
| 53 | #include "../test-skeleton.c" |