#if defined(LIBC_SCCS) && !defined(lint)static const char sccsid[] = "@(#)strtoul.c	8.1 (Berkeley) 6/4/93";static const char rcsid[] = "$Id: strtoul.c,v 1.1.2.1 2003/06/27 03:51:35 marka Exp $";#endif /* LIBC_SCCS and not lint *//* * 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. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: * 	This product includes software developed by the University of * 	California, Berkeley and its contributors. * 4. 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. */#include "port_before.h"#include <sys/types.h>#include <sys/param.h>#include <ctype.h>#include <errno.h>#include <limits.h>#include <stdlib.h>#include "port_after.h"#ifndef NEED_STRTOULint __strtoul_unneeded__;#else/* * Convert a string to an unsigned long integer. * * Ignores `locale' stuff.  Assumes that the upper and lower case * alphabets and digits are each contiguous. */u_longstrtoul(const char *nptr, char **endptr, int base) {	const char *s = nptr;	u_long acc, cutoff;	int neg, c, any, cutlim;	neg = 0;	/*	 * See strtol for comments as to the logic used.	 */	do {		c = *(unsigned char *)s++;	} while (isspace(c));	if (c == '-') {		neg = 1;		c = *s++;	} else if (c == '+')		c = *s++;	if ((base == 0 || base == 16) &&	    c == '0' && (*s == 'x' || *s == 'X')) {		c = s[1];		s += 2;		base = 16;	}	if (base == 0)		base = c == '0' ? 8 : 10;	cutoff = (u_long)ULONG_MAX / (u_long)base;	cutlim = (u_long)ULONG_MAX % (u_long)base;	for (acc = 0, any = 0;; c = *(unsigned char*)s++) {		if (isdigit(c))			c -= '0';		else if (isalpha(c))			c -= isupper(c) ? 'A' - 10 : 'a' - 10;		else			break;		if (c >= base)			break;		if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)			any = -1;		else {			any = 1;			acc *= base;			acc += c;		}	}	if (any < 0) {		acc = ULONG_MAX;		errno = ERANGE;	} else if (neg)		acc = -acc;	if (endptr != 0)		*endptr = (char *)(any ? s - 1 : nptr);	return (acc);}#endif /*NEED_STRTOUL*/