1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 2011 The FreeBSD Foundation
* All rights reserved.
* Portions of this software were developed by David Chisnall
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if 0
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strtouq.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp ");
#endif
__FBSDID("$FreeBSD$");
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <wchar.h>
#include <wctype.h>
#include "xlocale_private.h"
/*
* Convert a wide character string to an unsigned long long integer.
*/
unsigned long long
wcstoull_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
int base, locale_t locale)
{
const wchar_t *s;
unsigned long long acc;
wchar_t c;
unsigned long long cutoff;
int neg, any, cutlim;
FIX_LOCALE(locale);
/*
* See strtoull for comments as to the logic used.
*/
s = nptr;
do {
c = *s++;
} while (iswspace_l(c, locale));
if (c == L'-') {
neg = 1;
c = *s++;
} else {
neg = 0;
if (c == L'+')
c = *s++;
}
if ((base == 0 || base == 16) &&
c == L'0' && (*s == L'x' || *s == L'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == L'0' ? 8 : 10;
acc = any = 0;
if (base < 2 || base > 36)
goto noconv;
cutoff = ULLONG_MAX / base;
cutlim = ULLONG_MAX % base;
for ( ; ; c = *s++) {
#ifdef notyet
if (iswdigit_l(c, locale))
c = digittoint_l(c, locale);
else
#endif
if (c >= L'0' && c <= L'9')
c -= L'0';
else if (c >= L'A' && c <= L'Z')
c -= L'A' - 10;
else if (c >= L'a' && c <= L'z')
c -= L'a' - 10;
else
break;
if (c >= base)
break;
if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
any = -1;
else {
any = 1;
acc *= base;
acc += c;
}
}
if (any < 0) {
acc = ULLONG_MAX;
errno = ERANGE;
} else if (!any) {
noconv:
errno = EINVAL;
} else if (neg)
acc = -acc;
if (endptr != NULL)
*endptr = (wchar_t *)(any ? s - 1 : nptr);
return (acc);
}
unsigned long long
wcstoull(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
int base)
{
return wcstoull_l(nptr, endptr, base, __get_locale());
}
|
