1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 2.1 */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /*LINTLIBRARY*/
28*0Sstevel@tonic-gate #include <ctype.h>
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate #define ATOI
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate #ifdef ATOI
33*0Sstevel@tonic-gate typedef int TYPE;
34*0Sstevel@tonic-gate #define NAME atoi
35*0Sstevel@tonic-gate #else
36*0Sstevel@tonic-gate typedef long TYPE;
37*0Sstevel@tonic-gate #define NAME atol
38*0Sstevel@tonic-gate #endif
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate TYPE
NAME(p)41*0Sstevel@tonic-gate NAME(p)
42*0Sstevel@tonic-gate register char *p;
43*0Sstevel@tonic-gate {
44*0Sstevel@tonic-gate register TYPE n;
45*0Sstevel@tonic-gate register int c, neg = 0;
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate if (!isdigit(c = *p)) {
48*0Sstevel@tonic-gate while (isspace(c))
49*0Sstevel@tonic-gate c = *++p;
50*0Sstevel@tonic-gate switch (c) {
51*0Sstevel@tonic-gate case '-':
52*0Sstevel@tonic-gate neg++;
53*0Sstevel@tonic-gate case '+': /* fall-through */
54*0Sstevel@tonic-gate c = *++p;
55*0Sstevel@tonic-gate }
56*0Sstevel@tonic-gate if (!isdigit(c))
57*0Sstevel@tonic-gate return (0);
58*0Sstevel@tonic-gate }
59*0Sstevel@tonic-gate for (n = '0' - c; isdigit(c = *++p); ) {
60*0Sstevel@tonic-gate n *= 10; /* two steps to avoid unnecessary overflow */
61*0Sstevel@tonic-gate n += '0' - c; /* accum neg to avoid surprises at MAX */
62*0Sstevel@tonic-gate }
63*0Sstevel@tonic-gate return (neg ? n : -n);
64*0Sstevel@tonic-gate }
65