1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#include "lint.h"
33#include <ctype.h>
34#include <sys/types.h>
35#include <stdlib.h>
36
37#define	ATOLL
38
39#if defined	ATOI
40typedef int TYPE;
41#define	NAME	atoi
42#elif defined ATOL
43typedef long TYPE;
44#define	NAME	atol
45#else
46typedef longlong_t TYPE;
47#define	NAME	atoll
48#endif
49
50TYPE
51NAME(const char *p)
52{
53	TYPE n;
54	int c, neg = 0;
55	unsigned char	*up = (unsigned char *)p;
56
57	if (!isdigit(c = *up)) {
58		while (isspace(c))
59			c = *++up;
60		switch (c) {
61		case '-':
62			neg++;
63			/* FALLTHROUGH */
64		case '+':
65			c = *++up;
66		}
67		if (!isdigit(c))
68			return (0);
69	}
70	for (n = '0' - c; isdigit(c = *++up); ) {
71		n *= 10; /* two steps to avoid unnecessary overflow */
72		n += '0' - c; /* accum neg to avoid surprises at MAX */
73	}
74	return (neg ? n : -n);
75}
76