136 lines
5.2 KiB
C
136 lines
5.2 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2015.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2015 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \dir
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* \brief Common library header files.
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*
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* This folder contains header files which are common to all parts of the LUFA library. They may be used freely in
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* user applications.
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*/
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/** \file
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* \brief Common library convenience headers, macros and functions.
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*
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* \copydetails Group_Common
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*/
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/** \defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h
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* \brief Common library convenience headers, macros and functions.
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*
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* Common utility headers containing macros, functions, enums and types which are common to all
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* aspects of the library.
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*
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* @{
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*/
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/** \defgroup Group_GlobalInt Global Interrupt Macros
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* \brief Convenience macros for the management of interrupts globally within the device.
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*
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* Macros and functions to create and control global interrupts within the device.
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*/
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#ifndef __LUFA_COMMON_H__
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#define __LUFA_COMMON_H__
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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/** Convenience macro to determine the larger of two values.
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*
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* \attention This macro should only be used with operands that do not have side effects from being evaluated
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* multiple times.
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*
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* \param[in] x First value to compare
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* \param[in] y First value to compare
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*
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* \return The larger of the two input parameters
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*/
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#if !defined(MAX) || defined(__DOXYGEN__)
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#define MAX(x, y) (((x) > (y)) ? (x) : (y))
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#endif
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/** Convenience macro to determine the smaller of two values.
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*
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* \attention This macro should only be used with operands that do not have side effects from being evaluated
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* multiple times.
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*
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* \param[in] x First value to compare.
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* \param[in] y First value to compare.
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*
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* \return The smaller of the two input parameters
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*/
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#if !defined(MIN) || defined(__DOXYGEN__)
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#define MIN(x, y) (((x) < (y)) ? (x) : (y))
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#endif
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#if !defined(STRINGIFY) || defined(__DOXYGEN__)
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/** Converts the given input into a string, via the C Preprocessor. This macro puts literal quotation
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* marks around the input, converting the source into a string literal.
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*
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* \param[in] x Input to convert into a string literal.
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*
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* \return String version of the input.
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*/
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#define STRINGIFY(x) #x
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/** Converts the given input into a string after macro expansion, via the C Preprocessor. This macro puts
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* literal quotation marks around the expanded input, converting the source into a string literal.
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*
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* \param[in] x Input to expand and convert into a string literal.
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*
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* \return String version of the expanded input.
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*/
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#define STRINGIFY_EXPANDED(x) STRINGIFY(x)
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#endif
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#if !defined(CONCAT) || defined(__DOXYGEN__)
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/** Concatenates the given input into a single token, via the C Preprocessor.
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*
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* \param[in] x First item to concatenate.
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* \param[in] y Second item to concatenate.
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*
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* \return Concatenated version of the input.
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*/
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#define CONCAT(x, y) x ## y
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/** CConcatenates the given input into a single token after macro expansion, via the C Preprocessor.
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*
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* \param[in] x First item to concatenate.
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* \param[in] y Second item to concatenate.
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*
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* \return Concatenated version of the expanded input.
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*/
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#define CONCAT_EXPANDED(x, y) CONCAT(x, y)
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#endif
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#endif
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/** @} */
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