| Kévin Redon | 78bb885 | 2019-06-06 17:48:10 +0200 | [diff] [blame^] | 1 | /** |
| 2 | * \file |
| 3 | * |
| 4 | * \brief Recursion macro. |
| 5 | * |
| 6 | * Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries. |
| 7 | * |
| 8 | * \asf_license_start |
| 9 | * |
| 10 | * \page License |
| 11 | * |
| 12 | * Subject to your compliance with these terms, you may use Microchip |
| 13 | * software and any derivatives exclusively with Microchip products. |
| 14 | * It is your responsibility to comply with third party license terms applicable |
| 15 | * to your use of third party software (including open source software) that |
| 16 | * may accompany Microchip software. |
| 17 | * |
| 18 | * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| 19 | * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| 20 | * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| 21 | * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| 22 | * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| 23 | * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| 24 | * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| 25 | * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| 26 | * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| 27 | * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| 28 | * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| 29 | * |
| 30 | * \asf_license_stop |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | #ifndef _UTILS_RECURSION_MACRO_H |
| 35 | #define _UTILS_RECURSION_MACRO_H |
| 36 | |
| 37 | #ifdef __cplusplus |
| 38 | extern "C" { |
| 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * \brief Macro recursion |
| 43 | * |
| 44 | * \param[in] macro Macro to be repeated recursively |
| 45 | * \param[in] arg A recursive threshold, building on this to decline by times |
| 46 | * defined with parameter n |
| 47 | * \param[in] n The number of repetitious calls to macro |
| 48 | */ |
| 49 | #define RECURSION_MACRO(macro, arg, n) RECURSION_MACRO_I(macro, arg, n) |
| 50 | |
| 51 | /* |
| 52 | * \brief Second level is needed to get integer literal from "n" if it is |
| 53 | * defined as macro |
| 54 | */ |
| 55 | #define RECURSION_MACRO_I(macro, arg, n) RECURSION##n(macro, arg) |
| 56 | |
| 57 | #define RECURSION0(macro, arg) |
| 58 | #define RECURSION1(macro, arg) RECURSION0(macro, DEC_VALUE(arg)) macro(arg, 0) |
| 59 | #define RECURSION2(macro, arg) RECURSION1(macro, DEC_VALUE(arg)) macro(arg, 1) |
| 60 | #define RECURSION3(macro, arg) RECURSION2(macro, DEC_VALUE(arg)) macro(arg, 2) |
| 61 | #define RECURSION4(macro, arg) RECURSION3(macro, DEC_VALUE(arg)) macro(arg, 3) |
| 62 | #define RECURSION5(macro, arg) RECURSION4(macro, DEC_VALUE(arg)) macro(arg, 4) |
| 63 | |
| 64 | #ifdef __cplusplus |
| 65 | } |
| 66 | #endif |
| 67 | |
| 68 | #include <utils_decrement_macro.h> |
| 69 | #endif /* _UTILS_RECURSION_MACRO_H */ |