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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "FFS" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" ffs
+.SH NAME
+ffs \- find first set bit
+.SH SYNOPSIS
+.LP
+\fB#include <strings.h>
+.br
+.sp
+int ffs(int\fP \fIi\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIffs\fP() function shall find the first bit set (beginning with
+the least significant bit) in \fIi\fP, and return the
+index of that bit. Bits are numbered starting at one (the least significant
+bit).
+.SH RETURN VALUE
+.LP
+The \fIffs\fP() function shall return the index of the first bit set.
+If \fIi\fP is 0, then \fIffs\fP() shall return 0.
+.SH ERRORS
+.LP
+No errors are defined.
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+The Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<strings.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .