2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
40 * Convert a wide character string to an unsigned long integer.
43 wcstoul(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base)
52 * See strtol for comments as to the logic used.
57 } while (iswspace(c));
66 if ((base == 0 || base == 16) &&
67 c == L'0' && (*s == L'x' || *s == L'X')) {
73 base = c == L'0' ? 8 : 10;
75 if (base < 2 || base > 36)
78 cutoff = ULONG_MAX / base;
79 cutlim = ULONG_MAX % base;
86 if (c >= L'0' && c <= L'9')
88 else if (c >= L'A' && c <= L'Z')
90 else if (c >= L'a' && c <= L'z')
96 if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
113 *endptr = (wchar_t *)(any ? s - 1 : nptr);