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909f8e14 | 1 | /* Test for ldbl-128ibm strtold overflow to infinity (bug 14551). |
6d7e8eda | 2 | Copyright (C) 2015-2023 Free Software Foundation, Inc. |
909f8e14 JM |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
909f8e14 JM |
18 | |
19 | #include <errno.h> | |
20 | #include <fenv.h> | |
21 | #include <math.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | ||
25 | static int | |
26 | test_strtold_value (const char *s, double exp_hi, double exp_lo, int exp_exc, | |
27 | int exp_errno) | |
28 | { | |
29 | int result = 0; | |
30 | union { long double ld; double d[2]; } x; | |
31 | feclearexcept (FE_ALL_EXCEPT); | |
32 | errno = 0; | |
33 | x.ld = strtold (s, NULL); | |
34 | int exc = fetestexcept (FE_ALL_EXCEPT); | |
35 | int new_errno = errno; | |
36 | printf ("strtold (\"%s\") returned (%a, %a), exceptions 0x%x, errno %d\n", | |
37 | s, x.d[0], x.d[1], exc, new_errno); | |
38 | if (x.d[0] == exp_hi) | |
39 | printf ("PASS: strtold (\"%s\") high == %a\n", s, exp_hi); | |
40 | else | |
41 | { | |
42 | printf ("FAIL: strtold (\"%s\") high == %a\n", s, exp_hi); | |
43 | result = 1; | |
44 | } | |
45 | if (x.d[1] == exp_lo) | |
46 | printf ("PASS: strtold (\"%s\") low == %a\n", s, exp_lo); | |
47 | else | |
48 | { | |
49 | printf ("FAIL: strtold (\"%s\") low == %a\n", s, exp_lo); | |
50 | result = 1; | |
51 | } | |
52 | if (exc == exp_exc) | |
53 | printf ("PASS: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc); | |
54 | else | |
55 | { | |
56 | printf ("FAIL: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc); | |
57 | result = 1; | |
58 | } | |
59 | if (new_errno == exp_errno) | |
60 | printf ("PASS: strtold (\"%s\") errno %d\n", s, exp_errno); | |
61 | else | |
62 | { | |
63 | printf ("FAIL: strtold (\"%s\") errno %d\n", s, exp_errno); | |
64 | result = 1; | |
65 | } | |
66 | return result; | |
67 | } | |
68 | ||
69 | static int | |
70 | do_test (void) | |
71 | { | |
72 | int result = 0; | |
73 | result |= test_strtold_value ("0x1.fffffffffffff8p+1023", INFINITY, 0, | |
74 | FE_OVERFLOW | FE_INEXACT, ERANGE); | |
75 | result |= test_strtold_value ("-0x1.fffffffffffff8p+1023", -INFINITY, 0, | |
76 | FE_OVERFLOW | FE_INEXACT, ERANGE); | |
77 | result |= test_strtold_value ("0x1.ffffffffffffffp+1023", INFINITY, 0, | |
78 | FE_OVERFLOW | FE_INEXACT, ERANGE); | |
79 | result |= test_strtold_value ("-0x1.ffffffffffffffp+1023", -INFINITY, 0, | |
80 | FE_OVERFLOW | FE_INEXACT, ERANGE); | |
81 | return result; | |
82 | } | |
83 | ||
84 | #define TEST_FUNCTION do_test () | |
85 | #include "../../../test-skeleton.c" |