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/*
39 * function template for strtoi and strtou
40 *
41 * parameters:
42 *	_FUNCNAME    : function name
43 *      __TYPE       : return and range limits type
44 *      __WRAPPED    : wrapped function, strtoimax or strtoumax
45 */
46
47__TYPE
48_FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
49          __TYPE lo, __TYPE hi, int * rstatus)
50{
51	int serrno;
52	__TYPE im;
53	char *ep;
54	int rep;
55
56	/* endptr may be NULL */
57
58	if (endptr == NULL)
59		endptr = &ep;
60
61	if (rstatus == NULL)
62		rstatus = &rep;
63
64	serrno = errno;
65	errno = 0;
66
67	im = __WRAPPED(nptr, endptr, base);
68
69	*rstatus = errno;
70	errno = serrno;
71
72	if (*rstatus == 0) {
73		/* No digits were found */
74		if (nptr == *endptr)
75			*rstatus = ECANCELED;
76		/* There are further characters after number */
77		else if (**endptr != '\0')
78			*rstatus = ENOTSUP;
79	}
80
81	if (im < lo) {
82		if (*rstatus == 0)
83			*rstatus = ERANGE;
84		return lo;
85	}
86	if (im > hi) {
87		if (*rstatus == 0)
88			*rstatus = ERANGE;
89		return hi;
90	}
91
92	return im;
93}
94