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1.\" Copyright (c) 1990, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" Chris Torek.
6.\" Redistribution and use in source and binary forms, with or without
7.\" modification, are permitted provided that the following conditions
8.\" are met:
9.\" 1. Redistributions of source code must retain the above copyright
10.\" notice, this list of conditions and the following disclaimer.
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12.\" notice, this list of conditions and the following disclaimer in the
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14.\" 3. All advertising materials mentioning features or use of this software
15.\" must display the following acknowledgement:
16.\" This product includes software developed by the University of
17.\" California, Berkeley and its contributors.
18.\" 4. Neither the name of the University nor the names of its contributors
19.\" may be used to endorse or promote products derived from this software
20.\" without specific prior written permission.
21.\"
22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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33.\"
34.\" @(#)rindex.3 8.1 (Berkeley) 6/4/93
35.\" $FreeBSD: src/lib/libc/string/rindex.3,v 1.8 2002/12/18 13:33:03 ru Exp $
36.\"
37.Dd June 4, 1993
38.Dt RINDEX 3
39.Os
40.Sh NAME
41.Nm rindex
42.Nd locate character in string
43.Sh LIBRARY
44.Lb libc
45.Sh SYNOPSIS
46.In strings.h
47.Ft char *
48.Fn rindex "const char *s" "int c"
49.Sh DESCRIPTION
50The
51.Fn rindex
52function
53locates the last character
54matching
55.Fa c
56(converted to a
57.Vt char )
58in the null-terminated string
59.Fa s .
60.Sh RETURN VALUES
61A pointer to the character is returned if it is found;
62otherwise, NULL is returned.
63If
64.Fa c
65is
66.Ql \e0 ,
67.Fn rindex
68locates the terminating
69.Ql \e0 .
70.Sh SEE ALSO
71.Xr index 3 ,
72.Xr memchr 3 ,
73.Xr strchr 3 ,
74.Xr strcspn 3 ,
75.Xr strpbrk 3 ,
76.Xr strrchr 3 ,
77.Xr strsep 3 ,
78.Xr strspn 3 ,
79.Xr strstr 3 ,
80.Xr strtok 3
81.Sh HISTORY
82A
83.Fn rindex
84function appeared in
85.At v6 .
86Its prototype existed previously in
87.Aq Pa string.h
88before it was moved to
89.Aq Pa strings.h
90for
91.St -p1003.1-2001
92compliance.