/*- * Copyright (c) 1992, 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. */#if defined(LIBC_SCCS) && !defined(lint)static char sccsid[] = "@(#)strtouq.c	8.1 (Berkeley) 6/4/93";#endif /* LIBC_SCCS and not lint */#ifndef lintstatic const char rcsid[] =  "$FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.5.2.1 2001/03/02 09:45:20 obrien Exp $";#endif#include <sys/types.h>#include <limits.h>#include <errno.h>#include <ctype.h>#include <stdlib.h>#ifndef ULLONG_MAX#define ULLONG_MAX 0xffffffffffffffffULL#endif /* ULLONG_MAX *//* * Convert a string to an unsigned long long integer. * * Ignores `locale' stuff.  Assumes that the upper and lower case * alphabets and digits are each contiguous. */unsigned long longstrtoull(nptr, endptr, base)	const char *nptr;	char **endptr;	register int base;{	register const char *s = nptr;	register unsigned long long acc;	register unsigned char c;	register unsigned long long qbase, cutoff;	register int neg, any, cutlim;	/*	 * See strtoq for comments as to the logic used.	 */	s = nptr;	do {		c = *s++;	} while (isspace(c));	if (c == '-') {		neg = 1;		c = *s++;	} else {		neg = 0;		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;	qbase = (unsigned)base;	cutoff = (unsigned long long)ULLONG_MAX / qbase;	cutlim = (unsigned long long)ULLONG_MAX % qbase;	for (acc = 0, any = 0;; c = *s++) {		if (!isascii(c))			break;		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 *= qbase;			acc += c;		}	}	if (any < 0) {		acc = ULLONG_MAX;		errno = ERANGE;	} else if (neg)		acc = -acc;	if (endptr != 0)		*endptr = (char *)(any ? s - 1 : nptr);	return (acc);}