10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
32*6812Sraf #include "lint.h"
330Sstevel@tonic-gate #include <ctype.h>
340Sstevel@tonic-gate #include <sys/types.h>
350Sstevel@tonic-gate #include <stdlib.h>
360Sstevel@tonic-gate
370Sstevel@tonic-gate #define ATOLL
380Sstevel@tonic-gate
390Sstevel@tonic-gate #if defined ATOI
400Sstevel@tonic-gate typedef int TYPE;
410Sstevel@tonic-gate #define NAME atoi
420Sstevel@tonic-gate #elif defined ATOL
430Sstevel@tonic-gate typedef long TYPE;
440Sstevel@tonic-gate #define NAME atol
450Sstevel@tonic-gate #else
460Sstevel@tonic-gate typedef longlong_t TYPE;
470Sstevel@tonic-gate #define NAME atoll
480Sstevel@tonic-gate #endif
490Sstevel@tonic-gate
500Sstevel@tonic-gate TYPE
NAME(const char * p)510Sstevel@tonic-gate NAME(const char *p)
520Sstevel@tonic-gate {
530Sstevel@tonic-gate TYPE n;
540Sstevel@tonic-gate int c, neg = 0;
550Sstevel@tonic-gate unsigned char *up = (unsigned char *)p;
560Sstevel@tonic-gate
570Sstevel@tonic-gate if (!isdigit(c = *up)) {
580Sstevel@tonic-gate while (isspace(c))
590Sstevel@tonic-gate c = *++up;
600Sstevel@tonic-gate switch (c) {
610Sstevel@tonic-gate case '-':
620Sstevel@tonic-gate neg++;
630Sstevel@tonic-gate /* FALLTHROUGH */
640Sstevel@tonic-gate case '+':
650Sstevel@tonic-gate c = *++up;
660Sstevel@tonic-gate }
670Sstevel@tonic-gate if (!isdigit(c))
680Sstevel@tonic-gate return (0);
690Sstevel@tonic-gate }
700Sstevel@tonic-gate for (n = '0' - c; isdigit(c = *++up); ) {
710Sstevel@tonic-gate n *= 10; /* two steps to avoid unnecessary overflow */
720Sstevel@tonic-gate n += '0' - c; /* accum neg to avoid surprises at MAX */
730Sstevel@tonic-gate }
740Sstevel@tonic-gate return (neg ? n : -n);
750Sstevel@tonic-gate }
76