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52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
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* Copyright (C) 2013 INRIA.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup posix
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* @{
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*
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* @file
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* @brief string operations
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*
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* @see <a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/strings.h.html">
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* The Open Group Base Specifications Issue 7, <strings.h>
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* </a>
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*
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* @author Martine Lenders <mlenders@inf.fu-berlin.de>
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*/
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#ifndef STRINGS_H
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#define STRINGS_H
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#include <sys/types.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Returns the position of the first (least significant) bit set in
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* integer *i*, or 0 if no bits are set in i.
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*
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* @param[in] i an integer number.
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*
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* @return Position (1 for least significant bit) of the first bit set,
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* 0 if no bits are set.
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*
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* @see <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/ffs.html">
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* The Open Group Base Specification Issue 7, ffs
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* </a>
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*/
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#define ffs(i) __builtin_ffs(i)
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#ifdef __cplusplus
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}
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#endif
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#endif /* STRINGS_H */
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