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. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" from: @(#)rindex.3 8.1 (Berkeley) 6/4/93 31.\" $NetBSD: rindex.3,v 1.12 2010/04/29 06:54:26 jruoho Exp $ 32.\" 33.Dd April 29, 2010 34.Dt RINDEX 3 35.Os 36.Sh NAME 37.Nm rindex 38.Nd locate character in string 39.Sh LIBRARY 40.Lb libc 41.Sh SYNOPSIS 42.In strings.h 43.Ft char * 44.Fn rindex "const char *s" "int c" 45.Sh DESCRIPTION 46The 47.Fn rindex 48function 49locates the last character 50matching 51.Fa c 52(converted to a 53.Em char ) 54in the nul-terminated string 55.Fa s . 56.Sh RETURN VALUES 57A pointer to the character is returned if it is found; otherwise 58.Dv NULL 59is returned. 60If 61.Fa c 62is 63.Ql \e0 , 64.Fn rindex 65locates the terminating 66.Ql \e0 . 67.Sh SEE ALSO 68.Xr index 3 , 69.Xr memchr 3 , 70.Xr strchr 3 , 71.Xr strcspn 3 , 72.Xr strpbrk 3 , 73.Xr strrchr 3 , 74.Xr strsep 3 , 75.Xr strspn 3 , 76.Xr strstr 3 , 77.Xr strtok 3 78.Sh STANDARDS 79The 80.Fn rindex 81function conforms to 82.St -p1003.1-2001 . 83The 84.St -p1003.1-2004 85revision marked it as legacy and recommended the use of 86.Xr strrchr 3 87instead. 88The 89.St -p1003.1-2008 90revision removed 91.Fn rindex 92from the specification. 93.Sh HISTORY 94A 95.Fn rindex 96function appeared in 97.At v6 . 98