1 | /* Test for ldbl-128ibm strtold overflow to infinity (bug 14551). |
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 <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 (nptr: s, NULL); |
34 | int exc = fetestexcept (FE_ALL_EXCEPT); |
35 | int new_errno = errno; |
36 | printf (format: "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 (format: "PASS: strtold (\"%s\") high == %a\n" , s, exp_hi); |
40 | else |
41 | { |
42 | printf (format: "FAIL: strtold (\"%s\") high == %a\n" , s, exp_hi); |
43 | result = 1; |
44 | } |
45 | if (x.d[1] == exp_lo) |
46 | printf (format: "PASS: strtold (\"%s\") low == %a\n" , s, exp_lo); |
47 | else |
48 | { |
49 | printf (format: "FAIL: strtold (\"%s\") low == %a\n" , s, exp_lo); |
50 | result = 1; |
51 | } |
52 | if (exc == exp_exc) |
53 | printf (format: "PASS: strtold (\"%s\") exceptions 0x%x\n" , s, exp_exc); |
54 | else |
55 | { |
56 | printf (format: "FAIL: strtold (\"%s\") exceptions 0x%x\n" , s, exp_exc); |
57 | result = 1; |
58 | } |
59 | if (new_errno == exp_errno) |
60 | printf (format: "PASS: strtold (\"%s\") errno %d\n" , s, exp_errno); |
61 | else |
62 | { |
63 | printf (format: "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 (s: "0x1.fffffffffffff8p+1023" , INFINITY, exp_lo: 0, |
74 | FE_OVERFLOW | FE_INEXACT, ERANGE); |
75 | result |= test_strtold_value (s: "-0x1.fffffffffffff8p+1023" , exp_hi: -INFINITY, exp_lo: 0, |
76 | FE_OVERFLOW | FE_INEXACT, ERANGE); |
77 | result |= test_strtold_value (s: "0x1.ffffffffffffffp+1023" , INFINITY, exp_lo: 0, |
78 | FE_OVERFLOW | FE_INEXACT, ERANGE); |
79 | result |= test_strtold_value (s: "-0x1.ffffffffffffffp+1023" , exp_hi: -INFINITY, exp_lo: 0, |
80 | FE_OVERFLOW | FE_INEXACT, ERANGE); |
81 | return result; |
82 | } |
83 | |
84 | #define TEST_FUNCTION do_test () |
85 | #include "../../../test-skeleton.c" |
86 | |