[apple/libc.git] / stdlib / strtoull-fbsd.c

/*-
 * 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 */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp $");

#include "xlocale_private.h"

#include <limits.h>
#include <errno.h>
#include <ctype.h>
#include <stdlib.h>

/*
 * Convert a string to an unsigned long long integer.
 *
 * Assumes that the upper and lower case
 * alphabets and digits are each contiguous.
 */
unsigned long long
strtoull_l(const char * __restrict nptr, char ** __restrict endptr, int base,
    locale_t loc)
{
	const char *s;
	unsigned long long acc;
	char c;
	unsigned long long cutoff;
	int neg, any, cutlim;

	NORMALIZE_LOCALE(loc);
	/*
	 * See strtoq for comments as to the logic used.
	 */
	s = nptr;
	do {
		c = *s++;
	} while (isspace_l((unsigned char)c, loc));
	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;
	acc = any = 0;
	if (base < 2 || base > 36)
		goto noconv;

	cutoff = ULLONG_MAX / base;
	cutlim = ULLONG_MAX % base;
	for ( ; ; c = *s++) {
		if (c >= '0' && c <= '9')
			c -= '0';
		else if (c >= 'A' && c <= 'Z')
			c -= 'A' - 10;
		else if (c >= 'a' && c <= 'z')
			c -= '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 = ULLONG_MAX;
		errno = ERANGE;
	} else if (!any) {
noconv:
		errno = EINVAL;
	} else if (neg)
		acc = -acc;
	if (endptr != NULL)
		*endptr = (char *)(any ? s - 1 : nptr);
	return (acc);
}

unsigned long long
strtoull(const char * __restrict nptr, char ** __restrict endptr, int base)
{
	return strtoull_l(nptr, endptr, base, __current_locale());
}
Commit	Line	Data
9385eb3d	1	/*-
224c7076	2	* Copyright (c) 1992, 1993
e9ce8d39 A	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
5b2abdfb	34	#if defined(LIBC_SCCS) && !defined(lint)
224c7076	35	static char sccsid[] = "@(#)strtouq.c 8.1 (Berkeley) 6/4/93";
5b2abdfb	36	#endif /* LIBC_SCCS and not lint */
9385eb3d	37	#include <sys/cdefs.h>
224c7076	38	__FBSDID("$FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp $");
e9ce8d39	39
224c7076 A	40	#include "xlocale_private.h"
	41
	42	#include <limits.h>
	43	#include <errno.h>
	44	#include <ctype.h>
	45	#include <stdlib.h>
e9ce8d39 A	46
e9ce8d39 A	47	/*
224c7076 A	48	* Convert a string to an unsigned long long integer.
	49	*
	50	* Assumes that the upper and lower case
	51	* alphabets and digits are each contiguous.
e9ce8d39	52	*/
224c7076 A	53	unsigned long long
	54	strtoull_l(const char * __restrict nptr, char ** __restrict endptr, int base,
	55	locale_t loc)
e9ce8d39	56	{
224c7076 A	57	const char *s;
	58	unsigned long long acc;
	59	char c;
	60	unsigned long long cutoff;
	61	int neg, any, cutlim;
	62
	63	NORMALIZE_LOCALE(loc);
	64	/*
	65	* See strtoq for comments as to the logic used.
	66	*/
	67	s = nptr;
	68	do {
	69	c = *s++;
	70	} while (isspace_l((unsigned char)c, loc));
	71	if (c == '-') {
	72	neg = 1;
	73	c = *s++;
	74	} else {
	75	neg = 0;
	76	if (c == '+')
	77	c = *s++;
	78	}
	79	if ((base == 0 \|\| base == 16) &&
	80	c == '0' && (s == 'x' \|\| s == 'X')) {
	81	c = s[1];
	82	s += 2;
	83	base = 16;
	84	}
	85	if (base == 0)
	86	base = c == '0' ? 8 : 10;
	87	acc = any = 0;
	88	if (base < 2 \|\| base > 36)
	89	goto noconv;
e9ce8d39	90
224c7076 A	91	cutoff = ULLONG_MAX / base;
	92	cutlim = ULLONG_MAX % base;
	93	for ( ; ; c = *s++) {
	94	if (c >= '0' && c <= '9')
	95	c -= '0';
	96	else if (c >= 'A' && c <= 'Z')
	97	c -= 'A' - 10;
	98	else if (c >= 'a' && c <= 'z')
	99	c -= 'a' - 10;
	100	else
	101	break;
	102	if (c >= base)
	103	break;
	104	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
	105	any = -1;
	106	else {
	107	any = 1;
	108	acc *= base;
	109	acc += c;
	110	}
	111	}
	112	if (any < 0) {
	113	acc = ULLONG_MAX;
	114	errno = ERANGE;
	115	} else if (!any) {
	116	noconv:
	117	errno = EINVAL;
	118	} else if (neg)
	119	acc = -acc;
	120	if (endptr != NULL)
	121	endptr = (char )(any ? s - 1 : nptr);
	122	return (acc);
	123	}
	124
	125	unsigned long long
	126	strtoull(const char * __restrict nptr, char ** __restrict endptr, int base)
	127	{
	128	return strtoull_l(nptr, endptr, base, __current_locale());
e9ce8d39	129	}