4.4BSD/usr/src/share/man/man3f/index.3

.\" Copyright (c) 1983, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This module is believed to contain source code proprietary to AT&T.
.\" Use and redistribution is subject to the Berkeley Software License
.\" Agreement and your Software Agreement with AT&T (Western Electric).
.\"
.\"	@(#)index.3	8.1 (Berkeley) 6/5/93
.\"
.TH INDEX 3F "June 5, 1993"
.UC 5
.SH NAME
index, rindex, lnblnk, len \- tell about character objects
.SH SYNOPSIS
.B (intrinsic) function index (string, substr)
.br
.B character*(*) string, substr
.sp 1
.B integer function rindex (string, substr)
.br
.B character*(*) string, substr
.sp 1
.B function lnblnk (string)
.br
.B character*(*) string
.sp 1
.B (intrinsic) function len (string)
.br
.B character*(*) string
.SH DESCRIPTION
.I Index
.I (rindex)
returns the index of the first (last) occurrence of the substring
.I substr
in
.I string,
or zero if it does not occur.
.I Index
is an f77 intrinsic function;
.I rindex
is a library routine.
.PP
.I Lnblnk
returns the index of the last non-blank character in
.I string.
This is useful since all f77 character objects are fixed length, blank padded.
Intrinsic function
.I len
returns the size of the character object argument.
.SH FILES
.ie \nM /usr/ucb/lib/libF77.a
.el /usr/lib/libF77.a