Merge from trunk, resolve conflicts.
[bpt/emacs.git] / lib / strtoimax.c
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1/* Convert string representation of a number into an intmax_t value.
2
ab422c4d 3 Copyright (C) 1999, 2001-2004, 2006, 2009-2013 Free Software Foundation,
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4 Inc.
5
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19/* Written by Paul Eggert. */
20
21#include <config.h>
22
23/* Verify interface. */
24#include <inttypes.h>
25
26#include <stdlib.h>
27
28#include "verify.h"
29
30#ifdef UNSIGNED
31# ifndef HAVE_DECL_STRTOULL
32"this configure-time declaration test was not run"
33# endif
34# if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG_INT
35unsigned long long int strtoull (char const *, char **, int);
36# endif
37
38#else
39
40# ifndef HAVE_DECL_STRTOLL
41"this configure-time declaration test was not run"
42# endif
43# if !HAVE_DECL_STRTOLL && HAVE_LONG_LONG_INT
44long long int strtoll (char const *, char **, int);
45# endif
46#endif
47
48#ifdef UNSIGNED
49# define Have_long_long HAVE_UNSIGNED_LONG_LONG_INT
50# define Int uintmax_t
51# define Unsigned unsigned
52# define strtoimax strtoumax
53# define strtol strtoul
54# define strtoll strtoull
55#else
56# define Have_long_long HAVE_LONG_LONG_INT
57# define Int intmax_t
58# define Unsigned
59#endif
60
61Int
62strtoimax (char const *ptr, char **endptr, int base)
63{
64#if Have_long_long
65 verify (sizeof (Int) == sizeof (Unsigned long int)
66 || sizeof (Int) == sizeof (Unsigned long long int));
67
68 if (sizeof (Int) != sizeof (Unsigned long int))
69 return strtoll (ptr, endptr, base);
70#else
71 verify (sizeof (Int) == sizeof (Unsigned long int));
72#endif
73
74 return strtol (ptr, endptr, base);
75}