source: rtems-libbsd/freebsd/lib/libc/stdlib/strtoumax.c @ f41a394

55-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since f41a394 was 83eb07c, checked in by Chris Johns <chrisj@…>, on May 6, 2016 at 5:06:08 AM

Add sbin/sysctl

  • Property mode set to 100644
File size: 3.9 KB
Line 
1#include <machine/rtems-bsd-user-space.h>
2
3/*-
4 * Copyright (c) 1992, 1993
5 *      The Regents of the University of California.  All rights reserved.
6 *
7 * Copyright (c) 2011 The FreeBSD Foundation
8 * All rights reserved.
9 * Portions of this software were developed by David Chisnall
10 * under sponsorship from the FreeBSD Foundation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#if defined(LIBC_SCCS) && !defined(lint)
38static char sccsid[] = "from @(#)strtoul.c      8.1 (Berkeley) 6/4/93";
39#endif /* LIBC_SCCS and not lint */
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD$");
42
43#include <ctype.h>
44#include <errno.h>
45#include <stdlib.h>
46#include <inttypes.h>
47#ifndef __rtems__
48#include "xlocale_private.h"
49#else
50#define locale_t void*
51#define isspace_l(_c, _l) isspace(_c)
52static void* __get_locale(void) { return NULL; }
53#endif /* __rtems__ */
54
55/*
56 * Convert a string to a uintmax_t integer.
57 *
58 * Assumes that the upper and lower case
59 * alphabets and digits are each contiguous.
60 */
61uintmax_t
62strtoumax_l(const char * __restrict nptr, char ** __restrict endptr, int base,
63                locale_t locale)
64{
65        const char *s;
66        uintmax_t acc;
67        char c;
68        uintmax_t cutoff;
69        int neg, any, cutlim;
70#ifndef __rtems__
71        FIX_LOCALE(locale);
72#else
73        locale = NULL;
74#endif /* __rtems__ */
75
76        /*
77         * See strtoimax for comments as to the logic used.
78         */
79        s = nptr;
80        do {
81                c = *s++;
82        } while (isspace_l((unsigned char)c, locale));
83        if (c == '-') {
84                neg = 1;
85                c = *s++;
86        } else {
87                neg = 0;
88                if (c == '+')
89                        c = *s++;
90        }
91        if ((base == 0 || base == 16) &&
92            c == '0' && (*s == 'x' || *s == 'X') &&
93            ((s[1] >= '0' && s[1] <= '9') ||
94            (s[1] >= 'A' && s[1] <= 'F') ||
95            (s[1] >= 'a' && s[1] <= 'f'))) {
96                c = s[1];
97                s += 2;
98                base = 16;
99        }
100        if (base == 0)
101                base = c == '0' ? 8 : 10;
102        acc = any = 0;
103        if (base < 2 || base > 36)
104                goto noconv;
105
106        cutoff = UINTMAX_MAX / base;
107        cutlim = UINTMAX_MAX % base;
108        for ( ; ; c = *s++) {
109                if (c >= '0' && c <= '9')
110                        c -= '0';
111                else if (c >= 'A' && c <= 'Z')
112                        c -= 'A' - 10;
113                else if (c >= 'a' && c <= 'z')
114                        c -= 'a' - 10;
115                else
116                        break;
117                if (c >= base)
118                        break;
119                if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
120                        any = -1;
121                else {
122                        any = 1;
123                        acc *= base;
124                        acc += c;
125                }
126        }
127        if (any < 0) {
128                acc = UINTMAX_MAX;
129                errno = ERANGE;
130        } else if (!any) {
131noconv:
132                errno = EINVAL;
133        } else if (neg)
134                acc = -acc;
135        if (endptr != NULL)
136                *endptr = (char *)(any ? s - 1 : nptr);
137        return (acc);
138}
139uintmax_t
140strtoumax(const char * __restrict nptr, char ** __restrict endptr, int base)
141{
142        return strtoumax_l(nptr, endptr, base, __get_locale());
143}
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