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1 | /* Copyright (C) 2012 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
15 | License along with the GNU C Library; if not, see | |
16 | <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | /* Test bug #13941. */ | |
19 | ||
20 | #include <float.h> | |
21 | #include <math.h> | |
22 | #include <stdio.h> | |
23 | #include <string.h> | |
24 | ||
25 | int | |
26 | main (void) | |
27 | { | |
28 | #if LDBL_MANT_DIG >= 106 | |
29 | volatile union { long double l; long long x[2]; } u, v; | |
30 | char buf[64]; | |
31 | #endif | |
32 | int result = 0; | |
33 | ||
34 | #if LDBL_MANT_DIG == 106 || LDBL_MANT_DIG == 113 | |
35 | # define COMPARE_LDBL(u, v) \ | |
36 | ((u).l == (v).l && (u).x[0] == (v).x[0] && (u).x[1] == (v).x[1]) | |
37 | #else | |
38 | # define COMPARE_LDBL(u, v) ((u).l == (v).l) | |
39 | #endif | |
40 | ||
41 | #define TEST(val) \ | |
42 | do \ | |
43 | { \ | |
44 | u.l = (val); \ | |
45 | snprintf (buf, sizeof buf, "%.30LgL", u.l); \ | |
46 | if (strcmp (buf, #val) != 0) \ | |
47 | { \ | |
48 | printf ("Error on line %d: %s != %s\n", __LINE__, buf, #val); \ | |
49 | result = 1; \ | |
50 | } \ | |
51 | if (sscanf (#val, "%Lg", &v.l) != 1 || !COMPARE_LDBL (u, v)) \ | |
52 | { \ | |
53 | printf ("Error sscanf on line %d: %.30Lg != %.30Lg\n", __LINE__, \ | |
54 | u.l, v.l); \ | |
55 | result = 1; \ | |
56 | } \ | |
57 | /* printf ("%s %Lg %016Lx %016Lx\n", #val, u.l, u.x[0], u.x[1]); */ \ | |
58 | } \ | |
59 | while (0) | |
60 | ||
61 | #if LDBL_MANT_DIG >= 106 | |
62 | # if LDBL_MANT_DIG == 106 | |
63 | TEST (2.22507385850719347803989925739e-308L); | |
64 | TEST (2.22507385850719397210554509863e-308L); | |
65 | TEST (2.22507385850720088902458687609e-308L); | |
66 | # endif | |
67 | TEST (2.22507385850720138309023271733e-308L); | |
68 | TEST (2.22507385850720187715587855858e-308L); | |
69 | TEST (2.2250738585074419930597574044e-308L); | |
70 | TEST (4.45014771701440227211481959342e-308L); | |
71 | TEST (4.45014771701440276618046543466e-308L); | |
72 | TEST (4.45014771701440375431175711716e-308L); | |
73 | TEST (4.45014771701440474244304879965e-308L); | |
74 | TEST (7.12023634722304600689881138745e-307L); | |
75 | TEST (1.13923781555569064960474854133e-305L); | |
76 | TEST (1.13777777777777776389998996996L); | |
77 | TEST (1.13777777777777765287768750745L); | |
78 | TEST (20988295479420645138.2044444444L); | |
79 | TEST (20988295479420643090.2044444444L); | |
80 | TEST (2.14668699894294423266045294316e-292L); | |
81 | # if LDBL_MANT_DIG == 106 | |
82 | TEST (-2.35993711055432139266626434123e-292L); | |
83 | TEST (6.26323524637968345414769634658e-302L); | |
84 | TEST (1.49327164802066885331814201989e-308L); | |
85 | TEST (3.71834550652787023640837473722e-308L); | |
86 | TEST (9.51896449671134907001349268087e-306L); | |
87 | # endif | |
88 | #endif | |
89 | return result; | |
90 | } |