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LibrePilot/flight/pios/inc/pios_helpers.h

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/**
******************************************************************************
*
* @file pios_helpers.h
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief Header for helper functions/macro definitions
*
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef PIOS_HELPERS_H
#define PIOS_HELPERS_H
/**
* @brief return the number of elements contained in the array x.
* @param[in] x the array
* @return number of elements in x.
*
*/
#define NELEMENTS(x) (sizeof(x) / sizeof((x)[0]))
#endif // PIOS_HELPERS_H