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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1988 AT&T */
23 /* All Rights Reserved */
24
25
26 /*
27 * Copyright (c) 1997, by Sun Microsystems, Inc.
28 * All rights reserved.
29 */
30
31 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
32
33 /*LINTLIBRARY*/
34
35 #include <sys/types.h>
36 #include "utility.h"
37
38 #define first(f) (0)
39 #define last(f) (f->maxpage - 1)
40
41 /* next - return next page after current page(cyclic) */
42 static int
next(FORM * f)43 next(FORM *f)
44 {
45 int p = P(f);
46
47 if (++p > last(f))
48 p = first(f);
49 return (p);
50 }
51
52 /* prev - return previous page before current page(cyclic) */
53 static int
prev(FORM * f)54 prev(FORM *f)
55 {
56 int p = P(f);
57
58 if (--p < first(f))
59 p = last(f);
60 return (p);
61 }
62
63 int
_next_page(FORM * f)64 _next_page(FORM *f)
65 {
66 return (_set_form_page(f, next(f), (FIELD *) 0));
67 }
68
69 int
_prev_page(FORM * f)70 _prev_page(FORM *f)
71 {
72 return (_set_form_page(f, prev(f), (FIELD *) 0));
73 }
74
75 int
_first_page(FORM * f)76 _first_page(FORM *f)
77 {
78 return (_set_form_page(f, first(f), (FIELD *) 0));
79 }
80
81 int
_last_page(FORM * f)82 _last_page(FORM *f)
83 {
84 return (_set_form_page(f, last(f), (FIELD *) 0));
85 }
86