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/**
* @file rtems/seterr.h
*
* @brief Data which Ease the Burden of Consistently Setting Errno
*
* This file contains macros and definitions which ease the burden
* of consistently setting errno and returning -1.
*/
/*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SETERR_H
#define _RTEMS_SETERR_H
/**
* @defgroup ScoreSetErr Set Errno
*
* @ingroup Score
*
*/
/**@{*/
#include <errno.h>
/**
* This is a helper macro which will set the variable errno and return
* -1 to the caller. This pattern is common to many POSIX methods.
*
* @param[in] _error is the error code
*/
#define rtems_set_errno_and_return_minus_one( _error ) \
do { errno = (_error); return -1; } while(0)
/**
* This is a helper macro which will set the variable errno and return
* -1 to the caller. This pattern is common to many POSIX methods.
*
* @param[in] _error is the error code
* @param[in] _cast is the type to which -1 must be cast
*
* @note It is similar to @ref rtems_set_errno_and_return_minus_one but
* this -1 value is cast to something other than an int.
*/
#define rtems_set_errno_and_return_minus_one_cast( _error, _cast ) \
do { errno = (_error); return (_cast) -1; } while(0)
/**@}*/
#endif
/* end of include file */
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