1 | /* Test nearbyint functions do not disable exception traps (bug 19228). |
2 | Copyright (C) 2015-2022 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 <fenv.h> |
20 | #include <math.h> |
21 | #include <stdio.h> |
22 | |
23 | #ifndef FE_INEXACT |
24 | # define FE_INEXACT 0 |
25 | #endif |
26 | |
27 | #define TEST_FUNC(NAME, FLOAT, SUFFIX) \ |
28 | static int \ |
29 | NAME (void) \ |
30 | { \ |
31 | int result = 0; \ |
32 | volatile FLOAT a, b __attribute__ ((unused)); \ |
33 | a = 1.5; \ |
34 | /* nearbyint must work when traps on "inexact" are enabled. */ \ |
35 | b = nearbyint ## SUFFIX (a); \ |
36 | /* And it must have left those traps enabled. */ \ |
37 | if (fegetexcept () == FE_INEXACT) \ |
38 | puts ("PASS: " #FLOAT); \ |
39 | else \ |
40 | { \ |
41 | puts ("FAIL: " #FLOAT); \ |
42 | result = 1; \ |
43 | } \ |
44 | return result; \ |
45 | } |
46 | |
47 | TEST_FUNC (float_test, float, f) |
48 | TEST_FUNC (double_test, double, ) |
49 | TEST_FUNC (ldouble_test, long double, l) |
50 | |
51 | static int |
52 | do_test (void) |
53 | { |
54 | if (feenableexcept (FE_INEXACT) == -1) |
55 | { |
56 | puts (s: "enabling FE_INEXACT traps failed, cannot test" ); |
57 | return 77; |
58 | } |
59 | int result = float_test (); |
60 | feenableexcept (FE_INEXACT); |
61 | result |= double_test (); |
62 | feenableexcept (FE_INEXACT); |
63 | result |= ldouble_test (); |
64 | return result; |
65 | } |
66 | |
67 | #define TEST_FUNCTION do_test () |
68 | #include "../test-skeleton.c" |
69 | |