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