1 /* $NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp $ */
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31 * Original version ID:
32 * @(#)strtoul.c 8.1 (Berkeley) 6/4/93
33 * Citrus: xpg4dl/FreeBSD/lib/libc/locale/wcstoul.c,v 1.2 2001/09/21 16:11:41 yamt Exp
34 * NetBSD: wcstoul.c,v 1.1 2001/09/27 16:30:37 yamt Exp
38 * function template for wcstoul, wcstoull and wcstoumax.
41 * _FUNCNAME : function name
42 * __UINT : return type
43 * __UINT_MAX : upper limit of the return type
47 _FUNCNAME(const wchar_t *nptr, wchar_t **endptr, int base)
55 _DIAGASSERT(nptr != NULL);
56 /* endptr may be NULL */
58 if (base && (base < 2 || base > 36)) {
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.
71 } while (iswspace(wc));
80 if ((base == 0 || base == 16) &&
81 wc == L'0' && (*s == L'x' || *s == L'X')) {
87 base = wc == L'0' ? 8 : 10;
90 * See strtoul 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;; wc = (wchar_t) *s++) {
102 if (acc > cutoff || (acc == cutoff && i > cutlim)) {
115 /* LINTED interface specification */
116 *endptr = (wchar_t *)(any ? s - 1 : nptr);