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3185942a | 1 | /* strtoumax - convert string representation of a number into an uintmax_t value. */ |
f73dda09 | 2 | |
0001803f | 3 | /* Copyright 1999-2009 Free Software Foundation, Inc. |
3185942a JA |
4 | |
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software: you can redistribute it and/or modify | |
f73dda09 | 8 | it under the terms of the GNU General Public License as published by |
3185942a JA |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
f73dda09 | 11 | |
3185942a | 12 | Bash is distributed in the hope that it will be useful, |
f73dda09 JA |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
3185942a JA |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. |
19 | */ | |
0001803f | 20 | |
f73dda09 JA |
21 | /* Written by Paul Eggert. Modified by Chet Ramey for Bash. */ |
22 | ||
23 | #if HAVE_CONFIG_H | |
24 | # include <config.h> | |
25 | #endif | |
26 | ||
27 | #if HAVE_INTTYPES_H | |
28 | # include <inttypes.h> | |
29 | #endif | |
30 | ||
0001803f CR |
31 | #if HAVE_STDINT_H |
32 | # include <stdint.h> | |
33 | #endif | |
34 | ||
f73dda09 JA |
35 | #if HAVE_STDLIB_H |
36 | # include <stdlib.h> | |
37 | #endif | |
38 | ||
39 | #include <stdc.h> | |
40 | ||
41 | /* Verify a requirement at compile-time (unlike assert, which is runtime). */ | |
42 | #define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; } | |
43 | ||
44 | #ifndef HAVE_DECL_STRTOUL | |
45 | "this configure-time declaration test was not run" | |
46 | #endif | |
47 | #if !HAVE_DECL_STRTOUL | |
48 | extern unsigned long strtoul __P((const char *, char **, int)); | |
49 | #endif | |
50 | ||
51 | #ifndef HAVE_DECL_STRTOULL | |
52 | "this configure-time declaration test was not run" | |
53 | #endif | |
54 | #if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG | |
55 | extern unsigned long long strtoull __P((const char *, char **, int)); | |
56 | #endif | |
57 | ||
95732b49 JA |
58 | #ifdef strtoumax |
59 | #undef strtoumax | |
60 | #endif | |
61 | ||
f73dda09 JA |
62 | uintmax_t |
63 | strtoumax (ptr, endptr, base) | |
64 | const char *ptr; | |
65 | char **endptr; | |
66 | int base; | |
67 | { | |
68 | #if HAVE_UNSIGNED_LONG_LONG | |
69 | verify (size_is_that_of_unsigned_long_or_unsigned_long_long, | |
70 | (sizeof (uintmax_t) == sizeof (unsigned long) || | |
71 | sizeof (uintmax_t) == sizeof (unsigned long long))); | |
72 | ||
73 | if (sizeof (uintmax_t) != sizeof (unsigned long)) | |
74 | return (strtoull (ptr, endptr, base)); | |
75 | #else | |
76 | verify (size_is_that_of_unsigned_long, sizeof (uintmax_t) == sizeof (unsigned long)); | |
77 | #endif | |
78 | ||
79 | return (strtoul (ptr, endptr, base)); | |
80 | } | |
81 | ||
82 | #ifdef TESTING | |
83 | # include <stdio.h> | |
84 | int | |
85 | main () | |
86 | { | |
87 | char *p, *endptr; | |
88 | uintmax_t x; | |
89 | #if HAVE_UNSIGNED_LONG_LONG | |
90 | unsigned long long y; | |
91 | #endif | |
92 | unsigned long z; | |
93 | ||
94 | printf ("sizeof uintmax_t: %d\n", sizeof (uintmax_t)); | |
95 | ||
96 | #if HAVE_UNSIGNED_LONG_LONG | |
97 | printf ("sizeof unsigned long long: %d\n", sizeof (unsigned long long)); | |
98 | #endif | |
99 | printf ("sizeof unsigned long: %d\n", sizeof (unsigned long)); | |
100 | ||
101 | x = strtoumax("42", &endptr, 10); | |
102 | #if HAVE_LONG_LONG | |
103 | y = strtoull("42", &endptr, 10); | |
104 | #else | |
105 | y = 0; | |
106 | #endif | |
107 | z = strtoul("42", &endptr, 10); | |
108 | ||
109 | printf ("%llu %llu %lu\n", x, y, z); | |
110 | ||
111 | exit (0); | |
112 | } | |
113 | #endif |