1 /* $FreeBSD: head/lib/libc/iconv/_strtoul.h 219019 2011-02-25 00:04:39Z gabor $ */
2 /* $NetBSD: _strtoul.h,v 1.1 2008/08/20 12:42:26 joerg Exp $ */
5 * Copyright (c) 1990, 1993
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Original version ID:
33 * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
37 * function template for strtoul, strtoull and strtoumax.
40 * _FUNCNAME : function name
41 * __UINT : return type
42 * UINT_MAX : upper limit of the return type
46 _FUNCNAME(const char *nptr, char **endptr, int base)
51 int any, cutlim, i, neg;
53 /* check base value */
54 if (base && (base < 2 || base > 36)) {
55 #if !defined(_KERNEL) && !defined(_STANDALONE)
59 panic("%s: invalid base %d", __func__, base);
64 * Skip white space and pick up leading +/- sign if any.
65 * If base is 0, allow 0x for hex and 0 for octal, else
66 * assume decimal; if base is already 16, allow 0x.
80 if ((base == 0 || base == 16) &&
81 c == '0' && (*s == 'x' || *s == 'X')) {
87 base = (c == '0' ? 8 : 10);
90 * See strtol for comments as to the logic used.
92 cutoff = UINT_MAX / (__UINT)base;
93 cutlim = (int)(UINT_MAX % (__UINT)base);
94 for (acc = 0, any = 0;; c = *s++) {
98 i = c - (isupper(c) ? 'A' - 10 : 'a' - 10);
105 if (acc > cutoff || (acc == cutoff && i > cutlim)) {
107 #if !defined(_KERNEL) && !defined(_STANDALONE)
123 /* LINTED interface specification */
124 *endptr = __DECONST(void *, any ? s - 1 : nptr);