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70 lines
2.4 KiB
C

/**
* \file
*
* \brief Recursion macro.
*
* Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
*
* \asf_license_start
*
* \page License
*
* Subject to your compliance with these terms, you may use Microchip
* software and any derivatives exclusively with Microchip products.
* It is your responsibility to comply with third party license terms applicable
* to your use of third party software (including open source software) that
* may accompany Microchip software.
*
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
*
* \asf_license_stop
*
*/
#ifndef _UTILS_RECURSION_MACRO_H
#define _UTILS_RECURSION_MACRO_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* \brief Macro recursion
*
* \param[in] macro Macro to be repeated recursively
* \param[in] arg A recursive threshold, building on this to decline by times
* defined with parameter n
* \param[in] n The number of repetitious calls to macro
*/
#define RECURSION_MACRO(macro, arg, n) RECURSION_MACRO_I(macro, arg, n)
/*
* \brief Second level is needed to get integer literal from "n" if it is
* defined as macro
*/
#define RECURSION_MACRO_I(macro, arg, n) RECURSION##n(macro, arg)
#define RECURSION0(macro, arg)
#define RECURSION1(macro, arg) RECURSION0(macro, DEC_VALUE(arg)) macro(arg, 0)
#define RECURSION2(macro, arg) RECURSION1(macro, DEC_VALUE(arg)) macro(arg, 1)
#define RECURSION3(macro, arg) RECURSION2(macro, DEC_VALUE(arg)) macro(arg, 2)
#define RECURSION4(macro, arg) RECURSION3(macro, DEC_VALUE(arg)) macro(arg, 3)
#define RECURSION5(macro, arg) RECURSION4(macro, DEC_VALUE(arg)) macro(arg, 4)
#ifdef __cplusplus
}
#endif
#include <utils_decrement_macro.h>
#endif /* _UTILS_RECURSION_MACRO_H */