1 /* $NetBSD: _strtoi.h,v 1.1 2015/01/22 02:15:59 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * Original version ID:
32 * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
33 *
34 * Created by Kamil Rytarowski, based on ID:
35 * NetBSD: src/common/lib/libc/stdlib/_strtoul.h,v 1.7 2013/05/17 12:55:56 joerg Exp
36 */
37
38 #ifndef _STRTOI_H
39 #define _STRTOI_H
40
41 /*
42 * function template for strtoi and strtou
43 *
44 * parameters:
45 * _FUNCNAME : function name
46 * __TYPE : return and range limits type
47 * __WRAPPED : wrapped function, strtoimax or strtoumax
48 */
49
50 __TYPE
_FUNCNAME(const char * __restrict nptr,char ** __restrict endptr,int base,__TYPE lo,__TYPE hi,int * rstatus)51 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
52 __TYPE lo, __TYPE hi, int * rstatus)
53 {
54 int serrno;
55 __TYPE im;
56 char *ep;
57 int rep;
58
59 /* endptr may be NULL */
60
61 if (endptr == NULL)
62 endptr = &ep;
63
64 if (rstatus == NULL)
65 rstatus = &rep;
66
67 serrno = errno;
68 errno = 0;
69
70 im = __WRAPPED(nptr, endptr, base);
71
72 *rstatus = errno;
73 errno = serrno;
74
75 if (*rstatus == 0) {
76 /* No digits were found */
77 if (nptr == *endptr)
78 *rstatus = ECANCELED;
79 /* There are further characters after number */
80 else if (**endptr != '\0')
81 *rstatus = ENOTSUP;
82 }
83
84 if (im < lo) {
85 if (*rstatus == 0)
86 *rstatus = ERANGE;
87 return lo;
88 }
89 if (im > hi) {
90 if (*rstatus == 0)
91 *rstatus = ERANGE;
92 return hi;
93 }
94
95 return im;
96 }
97 #endif
98