1 files changed, 104 insertions, 0 deletions

diff --git a/src/lib/libc/string/strrchr.3 b/src/lib/libc/string/strrchr.3
new file mode 100644
index 0000000000..d7e0eeff85
--- /dev/null
+++ b/src/lib/libc/string/strrchr.3
@@ -0,0 +1,104 @@
+.\" Copyright (c) 1990, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek and the American National Standards Committee X3,
+.\" on Information Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     $OpenBSD: strrchr.3,v 1.7 2003/06/02 20:18:38 millert Exp $
+.\"
+.Dd June 29, 1991
+.Dt STRRCHR 3
+.Os
+.Sh NAME
+.Nm strrchr ,
+.Nm rindex
+.Nd locate last occurrence of a character in a string
+.Sh SYNOPSIS
+.Fd #include <string.h>
+.Ft char *
+.Fn strrchr "const char *s" "int c"
+.Ft char *
+.Fn rindex "const char *s" "int c"
+.Sh DESCRIPTION
+The
+.Fn strrchr
+function locates the last occurrence of the character
+.Fa c
+in the string
+.Fa s .
+The terminating
+.Tn NUL
+character is considered part of the string.
+If
+.Fa c
+is
+.Ql \e0 ,
+.Fn strrchr
+locates the terminating
+.Ql \e0 .
+.Pp
+The
+.Fn rindex
+function is an old synonym for
+.Fn strrchr .
+.Sh RETURN VALUES
+The
+.Fn strrchr
+function returns a pointer to the located character or
+.Dv NULL
+if the character does not appear in the string.
+.Sh EXAMPLES
+After the following call to
+.Fn strrchr ,
+.Va p
+will point to the string
+.Qq obar :
+.Bd -literal -offset indent
+char *p;
+char *s = "foobar";
+
+p = strrchr(s, 'o');
+.Ed
+.Sh SEE ALSO
+.Xr memchr 3 ,
+.Xr strchr 3 ,
+.Xr strcspn 3 ,
+.Xr strpbrk 3 ,
+.Xr strsep 3 ,
+.Xr strspn 3 ,
+.Xr strstr 3 ,
+.Xr strtok 3
+.Sh STANDARDS
+The
+.Fn strrchr
+function conforms to
+.St -ansiC .
+.Pp
+The
+.Fn rindex
+function is deprecated and shouldn't be used in new code.