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-rw-r--r--lib/libc/locale/_wcstoul.h116
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diff --git a/lib/libc/locale/_wcstoul.h b/lib/libc/locale/_wcstoul.h
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+/* $OpenBSD: _wcstoul.h,v 1.1 2005/07/01 08:59:27 espie Exp $ */
+/* $NetBSD: _wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp $ */
+
+/*
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Original version ID:
+ * @(#)strtoul.c 8.1 (Berkeley) 6/4/93
+ * Citrus: xpg4dl/FreeBSD/lib/libc/locale/wcstoul.c,v 1.2 2001/09/21 16:11:41 yamt Exp
+ * NetBSD: wcstoul.c,v 1.1 2001/09/27 16:30:37 yamt Exp
+ */
+
+/*
+ * function template for wcstoul, wcstoull and wcstoumax.
+ *
+ * parameters:
+ * FUNCNAME : function name
+ * uint_type : return type
+ * MAX_VALUE : upper limit of the return type
+ */
+
+uint_type
+FUNCNAME(const wchar_t *nptr, wchar_t **endptr, int base)
+{
+ const wchar_t *s;
+ uint_type acc, cutoff;
+ wint_t wc;
+ int i;
+ int neg, any, cutlim;
+
+ if (base && (base < 2 || base > 36)) {
+ errno = EINVAL;
+ return 0;
+ }
+
+ /*
+ * Skip white space and pick up leading +/- sign if any.
+ * If base is 0, allow 0x for hex and 0 for octal, else
+ * assume decimal; if base is already 16, allow 0x.
+ */
+ s = nptr;
+ do {
+ wc = (wchar_t) *s++;
+ } while (iswspace(wc));
+ if (wc == L'-') {
+ neg = 1;
+ wc = *s++;
+ } else {
+ neg = 0;
+ if (wc == L'+')
+ wc = *s++;
+ }
+ if ((base == 0 || base == 16) &&
+ wc == L'0' && (*s == L'x' || *s == L'X')) {
+ wc = s[1];
+ s += 2;
+ base = 16;
+ }
+ if (base == 0)
+ base = wc == L'0' ? 8 : 10;
+
+ /*
+ * See strtoul for comments as to the logic used.
+ */
+ cutoff = MAX_VALUE / (uint_type)base;
+ cutlim = (int)(MAX_VALUE % (uint_type)base);
+ for (acc = 0, any = 0;; wc = (wchar_t) *s++) {
+ i = wctoint(wc);
+ if (i == (wint_t)-1)
+ break;
+ if (i >= base)
+ break;
+ if (any < 0)
+ continue;
+ if (acc > cutoff || (acc == cutoff && i > cutlim)) {
+ any = -1;
+ acc = MAX_VALUE;
+ errno = ERANGE;
+ } else {
+ any = 1;
+ acc *= (uint_type)base;
+ acc += i;
+ }
+ }
+ if (neg && any > 0)
+ acc = -acc;
+ if (endptr != 0)
+ /* LINTED interface specification */
+ *endptr = (wchar_t *)(any ? s - 1 : nptr);
+ return (acc);
+}