source: rtems-libbsd/freebsd/lib/libc/stdlib/strtonum.c @ f244de9

4.1155-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since f244de9 was bceabc9, checked in by Sebastian Huber <sebastian.huber@…>, on 10/09/13 at 20:42:09

Move files to match FreeBSD layout

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*-
2 * Copyright (c) 2004 Ted Unangst and Todd Miller
3 * All rights reserved.
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 *      $OpenBSD: strtonum.c,v 1.6 2004/08/03 19:38:01 millert Exp $
18 */
19
20#include <sys/cdefs.h>
21__FBSDID("$FreeBSD$");
22
23#include <errno.h>
24#include <limits.h>
25#include <stdlib.h>
26
27#define INVALID         1
28#define TOOSMALL        2
29#define TOOLARGE        3
30
31long long
32strtonum(const char *numstr, long long minval, long long maxval,
33    const char **errstrp)
34{
35        long long ll = 0;
36        char *ep;
37        int error = 0;
38        struct errval {
39                const char *errstr;
40                int err;
41        } ev[4] = {
42                { NULL,         0 },
43                { "invalid",    EINVAL },
44                { "too small",  ERANGE },
45                { "too large",  ERANGE },
46        };
47
48        ev[0].err = errno;
49        errno = 0;
50        if (minval > maxval)
51                error = INVALID;
52        else {
53                ll = strtoll(numstr, &ep, 10);
54                if (errno == EINVAL || numstr == ep || *ep != '\0')
55                        error = INVALID;
56                else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
57                        error = TOOSMALL;
58                else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
59                        error = TOOLARGE;
60        }
61        if (errstrp != NULL)
62                *errstrp = ev[error].errstr;
63        errno = ev[error].err;
64        if (error)
65                ll = 0;
66
67        return (ll);
68}
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