/* * Copyright (c) 2011-2014, Wind River Systems, Inc. * * SPDX-License-Identifier: Apache-2.0 */ /** * @file * @brief Misc utilities * * Misc utilities usable by the kernel and application code. */ #ifndef ZEPHYR_INCLUDE_MISC_UTIL_H_ #define ZEPHYR_INCLUDE_MISC_UTIL_H_ #ifndef _ASMLANGUAGE #include #include /* Helper to pass a int as a pointer or vice-versa. * Those are available for 32 bits architectures: */ #define POINTER_TO_UINT(x) ((u32_t) (x)) #define UINT_TO_POINTER(x) ((void *) (x)) #define POINTER_TO_INT(x) ((s32_t) (x)) #define INT_TO_POINTER(x) ((void *) (x)) #if !(defined (__CHAR_BIT__) && defined (__SIZEOF_LONG__)) # error Missing required predefined macros for BITS_PER_LONG calculation #endif #define BITS_PER_LONG (__CHAR_BIT__ * __SIZEOF_LONG__) /* Create a contiguous bitmask starting at bit position @l and ending at * position @h. */ #define GENMASK(h, l) \ (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h)))) /* Evaluates to 0 if cond is true-ish; compile error otherwise */ #define ZERO_OR_COMPILE_ERROR(cond) ((int) sizeof(char[1 - 2 * !(cond)]) - 1) /* Evaluates to 0 if array is an array; compile error if not array (e.g. * pointer) */ #define IS_ARRAY(array) \ ZERO_OR_COMPILE_ERROR( \ !__builtin_types_compatible_p(__typeof__(array), \ __typeof__(&(array)[0]))) #if defined(__cplusplus) template < class T, size_t N > constexpr size_t ARRAY_SIZE(T(&)[N]) { return N; } #else /* Evaluates to number of elements in an array; compile error if not * an array (e.g. pointer) */ #define ARRAY_SIZE(array) \ ((unsigned long) (IS_ARRAY(array) + \ (sizeof(array) / sizeof((array)[0])))) #endif /* Evaluates to 1 if ptr is part of array, 0 otherwise; compile error if * "array" argument is not an array (e.g. "ptr" and "array" mixed up) */ #define PART_OF_ARRAY(array, ptr) \ ((ptr) && ((ptr) >= &array[0] && (ptr) < &array[ARRAY_SIZE(array)])) #define CONTAINER_OF(ptr, type, field) \ ((type *)(((char *)(ptr)) - offsetof(type, field))) /* round "x" up/down to next multiple of "align" (which must be a power of 2) */ #define ROUND_UP(x, align) \ (((unsigned long)(x) + ((unsigned long)align - 1)) & \ ~((unsigned long)align - 1)) #define ROUND_DOWN(x, align) ((unsigned long)(x) & ~((unsigned long)align - 1)) #define ceiling_fraction(numerator, divider) \ (((numerator) + ((divider) - 1)) / (divider)) #ifdef INLINED #define INLINE inline #else #define INLINE #endif #ifndef MAX #define MAX(a, b) (((a) > (b)) ? (a) : (b)) #endif #ifndef MIN #define MIN(a, b) (((a) < (b)) ? (a) : (b)) #endif static inline bool is_power_of_two(unsigned int x) { return (x != 0) && !(x & (x - 1)); } static inline s64_t arithmetic_shift_right(s64_t value, u8_t shift) { s64_t sign_ext; if (shift == 0) { return value; } /* extract sign bit */ sign_ext = (value >> 63) & 1; /* make all bits of sign_ext be the same as the value's sign bit */ sign_ext = -sign_ext; /* shift value and fill opened bit positions with sign bit */ return (value >> shift) | (sign_ext << (64 - shift)); } #endif /* !_ASMLANGUAGE */ /* KB, MB, GB */ #define KB(x) ((x) << 10) #define MB(x) (KB(x) << 10) #define GB(x) (MB(x) << 10) /* KHZ, MHZ */ #define KHZ(x) ((x) * 1000) #define MHZ(x) (KHZ(x) * 1000) #ifndef BIT #if defined(_ASMLANGUAGE) #define BIT(n) (1 << (n)) #else #define BIT(n) (1UL << (n)) #endif #endif /** * @brief Macro sets or clears bit depending on boolean value * * @param var Variable to be altered * @param bit Bit number * @param set Value 0 clears bit, any other value sets bit */ #define WRITE_BIT(var, bit, set) \ ((var) = (set) ? ((var) | BIT(bit)) : ((var) & ~BIT(bit))) #define BIT_MASK(n) (BIT(n) - 1) /** * @brief Check for macro definition in compiler-visible expressions * * This trick was pioneered in Linux as the config_enabled() macro. * The madness has the effect of taking a macro value that may be * defined to "1" (e.g. CONFIG_MYFEATURE), or may not be defined at * all and turning it into a literal expression that can be used at * "runtime". That is, it works similarly to * "defined(CONFIG_MYFEATURE)" does except that it is an expansion * that can exist in a standard expression and be seen by the compiler * and optimizer. Thus much ifdef usage can be replaced with cleaner * expressions like: * * if (IS_ENABLED(CONFIG_MYFEATURE)) * myfeature_enable(); * * INTERNAL * First pass just to expand any existing macros, we need the macro * value to be e.g. a literal "1" at expansion time in the next macro, * not "(1)", etc... Standard recursive expansion does not work. */ #define IS_ENABLED(config_macro) Z_IS_ENABLED1(config_macro) /* Now stick on a "_XXXX" prefix, it will now be "_XXXX1" if config_macro * is "1", or just "_XXXX" if it's undefined. * ENABLED: Z_IS_ENABLED2(_XXXX1) * DISABLED Z_IS_ENABLED2(_XXXX) */ #define Z_IS_ENABLED1(config_macro) Z_IS_ENABLED2(_XXXX##config_macro) /* Here's the core trick, we map "_XXXX1" to "_YYYY," (i.e. a string * with a trailing comma), so it has the effect of making this a * two-argument tuple to the preprocessor only in the case where the * value is defined to "1" * ENABLED: _YYYY, <--- note comma! * DISABLED: _XXXX */ #define _XXXX1 _YYYY, /* Then we append an extra argument to fool the gcc preprocessor into * accepting it as a varargs macro. * arg1 arg2 arg3 * ENABLED: Z_IS_ENABLED3(_YYYY, 1, 0) * DISABLED Z_IS_ENABLED3(_XXXX 1, 0) */ #define Z_IS_ENABLED2(one_or_two_args) Z_IS_ENABLED3(one_or_two_args true, false) /* And our second argument is thus now cooked to be 1 in the case * where the value is defined to 1, and 0 if not: */ #define Z_IS_ENABLED3(ignore_this, val, ...) val /** * @brief Insert code depending on result of flag evaluation. * * This is based on same idea as @ref IS_ENABLED macro but as the result of * flag evaluation provided code is injected. Because preprocessor interprets * each comma as an argument boundary, code must be provided in the brackets. * Brackets are stripped away during macro processing. * * Usage example: * * \#define MACRO(x) COND_CODE_1(CONFIG_FLAG, (u32_t x;), ()) * * It can be considered as alternative to: * * \#if defined(CONFIG_FLAG) && (CONFIG_FLAG == 1) * \#define MACRO(x) u32_t x; * \#else * \#define MACRO(x) * \#endif * * However, the advantage of that approach is that code is resolved in place * where it is used while \#if method resolves given macro when header is * included and product is fixed in the given scope. * * @note Flag can also be a result of preprocessor output e.g. * product of NUM_VA_ARGS_LESS_1(...). * * @param _flag Evaluated flag * @param _if_1_code Code used if flag exists and equal 1. Argument must be * in brackets. * @param _else_code Code used if flag doesn't exists or isn't equal 1. * */ #define COND_CODE_1(_flag, _if_1_code, _else_code) \ Z_COND_CODE_1(_flag, _if_1_code, _else_code) #define Z_COND_CODE_1(_flag, _if_1_code, _else_code) \ __COND_CODE(_XXXX##_flag, _if_1_code, _else_code) /** * @brief Insert code depending on result of flag evaluation. * * See @ref COND_CODE_1 for details. * * @param _flag Evaluated flag * @param _if_0_code Code used if flag exists and equal 0. Argument must be * in brackets. * @param _else_code Code used if flag doesn't exists or isn't equal 0. * */ #define COND_CODE_0(_flag, _if_0_code, _else_code) \ Z_COND_CODE_0(_flag, _if_0_code, _else_code) #define Z_COND_CODE_0(_flag, _if_0_code, _else_code) \ __COND_CODE(_ZZZZ##_flag, _if_0_code, _else_code) #define _ZZZZ0 _YYYY, /* Macro used internally by @ref COND_CODE_1 and @ref COND_CODE_0. */ #define __COND_CODE(one_or_two_args, _if_code, _else_code) \ __GET_ARG2_DEBRACKET(one_or_two_args _if_code, _else_code) /* Macro used internally to remove brackets from argument. */ #define __DEBRACKET(...) __VA_ARGS__ /* Macro used internally for getting second argument and removing brackets * around that argument. It is expected that parameter is provided in brackets */ #define __GET_ARG2_DEBRACKET(ignore_this, val, ...) __DEBRACKET val /** * @brief Get first argument from variable list of arguments */ #define GET_ARG1(arg1, ...) arg1 /** * @brief Get second argument from variable list of arguments */ #define GET_ARG2(arg1, arg2, ...) arg2 /** * @brief Get all arguments except the first one. */ #define GET_ARGS_LESS_1(val, ...) __VA_ARGS__ /** * Macros for doing code-generation with the preprocessor. * * Generally it is better to generate code with the preprocessor than * to copy-paste code or to generate code with the build system / * python script's etc. * * http://stackoverflow.com/a/12540675 */ #define UTIL_EMPTY(...) #define UTIL_DEFER(...) __VA_ARGS__ UTIL_EMPTY() #define UTIL_OBSTRUCT(...) __VA_ARGS__ UTIL_DEFER(UTIL_EMPTY)() #define UTIL_EXPAND(...) __VA_ARGS__ #define UTIL_EVAL(...) UTIL_EVAL1(UTIL_EVAL1(UTIL_EVAL1(__VA_ARGS__))) #define UTIL_EVAL1(...) UTIL_EVAL2(UTIL_EVAL2(UTIL_EVAL2(__VA_ARGS__))) #define UTIL_EVAL2(...) UTIL_EVAL3(UTIL_EVAL3(UTIL_EVAL3(__VA_ARGS__))) #define UTIL_EVAL3(...) UTIL_EVAL4(UTIL_EVAL4(UTIL_EVAL4(__VA_ARGS__))) #define UTIL_EVAL4(...) UTIL_EVAL5(UTIL_EVAL5(UTIL_EVAL5(__VA_ARGS__))) #define UTIL_EVAL5(...) __VA_ARGS__ #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__) #define UTIL_PRIMITIVE_CAT(a, ...) a##__VA_ARGS__ #define UTIL_INC(x) UTIL_PRIMITIVE_CAT(UTIL_INC_, x) #define UTIL_INC_0 1 #define UTIL_INC_1 2 #define UTIL_INC_2 3 #define UTIL_INC_3 4 #define UTIL_INC_4 5 #define UTIL_INC_5 6 #define UTIL_INC_6 7 #define UTIL_INC_7 8 #define UTIL_INC_8 9 #define UTIL_INC_9 10 #define UTIL_INC_10 11 #define UTIL_INC_11 12 #define UTIL_INC_12 13 #define UTIL_INC_13 14 #define UTIL_INC_14 15 #define UTIL_INC_15 16 #define UTIL_INC_16 17 #define UTIL_INC_17 18 #define UTIL_INC_18 19 #define UTIL_INC_19 19 #define UTIL_DEC(x) UTIL_PRIMITIVE_CAT(UTIL_DEC_, x) #define UTIL_DEC_0 0 #define UTIL_DEC_1 0 #define UTIL_DEC_2 1 #define UTIL_DEC_3 2 #define UTIL_DEC_4 3 #define UTIL_DEC_5 4 #define UTIL_DEC_6 5 #define UTIL_DEC_7 6 #define UTIL_DEC_8 7 #define UTIL_DEC_9 8 #define UTIL_DEC_10 9 #define UTIL_DEC_11 10 #define UTIL_DEC_12 11 #define UTIL_DEC_13 12 #define UTIL_DEC_14 13 #define UTIL_DEC_15 14 #define UTIL_DEC_16 15 #define UTIL_DEC_17 16 #define UTIL_DEC_18 17 #define UTIL_DEC_19 18 #define UTIL_DEC_20 19 #define UTIL_DEC_21 20 #define UTIL_DEC_22 21 #define UTIL_DEC_23 22 #define UTIL_DEC_24 23 #define UTIL_DEC_25 24 #define UTIL_DEC_26 25 #define UTIL_DEC_27 26 #define UTIL_DEC_28 27 #define UTIL_DEC_29 28 #define UTIL_DEC_30 29 #define UTIL_DEC_31 30 #define UTIL_DEC_32 31 #define UTIL_DEC_33 32 #define UTIL_DEC_34 33 #define UTIL_DEC_35 34 #define UTIL_DEC_36 35 #define UTIL_DEC_37 36 #define UTIL_DEC_38 37 #define UTIL_DEC_39 38 #define UTIL_DEC_40 39 #define UTIL_CHECK_N(x, n, ...) n #define UTIL_CHECK(...) UTIL_CHECK_N(__VA_ARGS__, 0,) #define UTIL_NOT(x) UTIL_CHECK(UTIL_PRIMITIVE_CAT(UTIL_NOT_, x)) #define UTIL_NOT_0 ~, 1, #define UTIL_COMPL(b) UTIL_PRIMITIVE_CAT(UTIL_COMPL_, b) #define UTIL_COMPL_0 1 #define UTIL_COMPL_1 0 #define UTIL_BOOL(x) UTIL_COMPL(UTIL_NOT(x)) #define UTIL_IIF(c) UTIL_PRIMITIVE_CAT(UTIL_IIF_, c) #define UTIL_IIF_0(t, ...) __VA_ARGS__ #define UTIL_IIF_1(t, ...) t #define UTIL_IF(c) UTIL_IIF(UTIL_BOOL(c)) #define UTIL_EAT(...) #define UTIL_EXPAND(...) __VA_ARGS__ #define UTIL_WHEN(c) UTIL_IF(c)(UTIL_EXPAND, UTIL_EAT) #define UTIL_REPEAT(count, macro, ...) \ UTIL_WHEN(count) \ ( \ UTIL_OBSTRUCT(UTIL_REPEAT_INDIRECT) () \ ( \ UTIL_DEC(count), macro, __VA_ARGS__ \ ) \ UTIL_OBSTRUCT(macro) \ ( \ UTIL_DEC(count), __VA_ARGS__ \ ) \ ) #define UTIL_REPEAT_INDIRECT() UTIL_REPEAT /** * Generates a sequence of code. * Useful for generating code like; * * NRF_PWM0, NRF_PWM1, NRF_PWM2, * * @arg LEN: The length of the sequence. Must be defined and less than * 20. * * @arg F(i, F_ARG): A macro function that accepts two arguments. * F is called repeatedly, the first argument * is the index in the sequence, and the second argument is the third * argument given to UTIL_LISTIFY. * * Example: * * \#define FOO(i, _) NRF_PWM ## i , * { UTIL_LISTIFY(PWM_COUNT, FOO) } * The above two lines will generate the below: * { NRF_PWM0 , NRF_PWM1 , } * * @note Calling UTIL_LISTIFY with undefined arguments has undefined * behavior. */ #define UTIL_LISTIFY(LEN, F, F_ARG) UTIL_EVAL(UTIL_REPEAT(LEN, F, F_ARG)) /**@brief Implementation details for NUM_VAR_ARGS */ #define NUM_VA_ARGS_LESS_1_IMPL( \ _ignored, \ _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \ _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, \ _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, \ _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, \ _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, \ _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, \ _61, _62, N, ...) N /**@brief Macro to get the number of arguments in a call variadic macro call. * First argument is not counted. * * param[in] ... List of arguments * * @retval Number of variadic arguments in the argument list */ #define NUM_VA_ARGS_LESS_1(...) \ NUM_VA_ARGS_LESS_1_IMPL(__VA_ARGS__, 63, 62, 61, \ 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, \ 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, \ 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, \ 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, \ 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, \ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, ~) /** * @brief Mapping macro * * Macro that process all arguments using given macro * * @param ... Macro name to be used for argument processing followed by * arguments to process. Macro should have following * form: MACRO(argument). * * @return All arguments processed by given macro */ #define MACRO_MAP(...) MACRO_MAP_(__VA_ARGS__) #define MACRO_MAP_(...) \ /* To make sure it works also for 2 arguments in total */ \ MACRO_MAP_N(NUM_VA_ARGS_LESS_1(__VA_ARGS__), __VA_ARGS__) /** * @brief Mapping N arguments macro * * Macro similar to @ref MACRO_MAP but maps exact number of arguments. * If there is more arguments given, the rest would be ignored. * * @param N Number of arguments to map * @param ... Macro name to be used for argument processing followed by * arguments to process. Macro should have following * form: MACRO(argument). * * @return Selected number of arguments processed by given macro */ #define MACRO_MAP_N(N, ...) MACRO_MAP_N_(N, __VA_ARGS__) #define MACRO_MAP_N_(N, ...) UTIL_CAT(MACRO_MAP_, N)(__VA_ARGS__,) #define MACRO_MAP_0(...) #define MACRO_MAP_1(macro, a, ...) macro(a) #define MACRO_MAP_2(macro, a, ...) macro(a)MACRO_MAP_1(macro, __VA_ARGS__,) #define MACRO_MAP_3(macro, a, ...) macro(a)MACRO_MAP_2(macro, __VA_ARGS__,) #define MACRO_MAP_4(macro, a, ...) macro(a)MACRO_MAP_3(macro, __VA_ARGS__,) #define MACRO_MAP_5(macro, a, ...) macro(a)MACRO_MAP_4(macro, __VA_ARGS__,) #define MACRO_MAP_6(macro, a, ...) macro(a)MACRO_MAP_5(macro, __VA_ARGS__,) #define MACRO_MAP_7(macro, a, ...) macro(a)MACRO_MAP_6(macro, __VA_ARGS__,) #define MACRO_MAP_8(macro, a, ...) macro(a)MACRO_MAP_7(macro, __VA_ARGS__,) #define MACRO_MAP_9(macro, a, ...) macro(a)MACRO_MAP_8(macro, __VA_ARGS__,) #define MACRO_MAP_10(macro, a, ...) macro(a)MACRO_MAP_9(macro, __VA_ARGS__,) #define MACRO_MAP_11(macro, a, ...) macro(a)MACRO_MAP_10(macro, __VA_ARGS__,) #define MACRO_MAP_12(macro, a, ...) macro(a)MACRO_MAP_11(macro, __VA_ARGS__,) #define MACRO_MAP_13(macro, a, ...) macro(a)MACRO_MAP_12(macro, __VA_ARGS__,) #define MACRO_MAP_14(macro, a, ...) macro(a)MACRO_MAP_13(macro, __VA_ARGS__,) #define MACRO_MAP_15(macro, a, ...) macro(a)MACRO_MAP_14(macro, __VA_ARGS__,) /* * The following provides variadic preprocessor macro support to * help eliminate multiple, repetitive function/macro calls. This * allows up to 10 "arguments" in addition to z_call . * Note - derived from work on: * https://codecraft.co/2014/11/25/variadic-macros-tricks/ */ #define Z_GET_ARG(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N #define _for_0(z_call, ...) #define _for_1(z_call, x) z_call(x) #define _for_2(z_call, x, ...) z_call(x) _for_1(z_call, ##__VA_ARGS__) #define _for_3(z_call, x, ...) z_call(x) _for_2(z_call, ##__VA_ARGS__) #define _for_4(z_call, x, ...) z_call(x) _for_3(z_call, ##__VA_ARGS__) #define _for_5(z_call, x, ...) z_call(x) _for_4(z_call, ##__VA_ARGS__) #define _for_6(z_call, x, ...) z_call(x) _for_5(z_call, ##__VA_ARGS__) #define _for_7(z_call, x, ...) z_call(x) _for_6(z_call, ##__VA_ARGS__) #define _for_8(z_call, x, ...) z_call(x) _for_7(z_call, ##__VA_ARGS__) #define _for_9(z_call, x, ...) z_call(x) _for_8(z_call, ##__VA_ARGS__) #define _for_10(z_call, x, ...) z_call(x) _for_9(z_call, ##__VA_ARGS__) #define FOR_EACH(x, ...) \ Z_GET_ARG(__VA_ARGS__, \ _for_10, _for_9, _for_8, _for_7, _for_6, _for_5, \ _for_4, _for_3, _for_2, _for_1, _for_0)(x, ##__VA_ARGS__) /* FOR_EACH_FIXED_ARG is used for calling the same function * With one fixed argument and changing 2nd argument. */ #define z_rep_0(_fn, f, ...) #define z_rep_1(_fn, f, x) {_fn(x, f); z_rep_0(_fn, f)} #define z_rep_2(_fn, f, x, ...) {_fn(x, f); z_rep_1(_fn, f, ##__VA_ARGS__)} #define z_rep_3(_fn, f, x, ...) {_fn(x, f); z_rep_2(_fn, f, ##__VA_ARGS__)} #define z_rep_4(_fn, f, x, ...) {_fn(x, f); z_rep_3(_fn, f, ##__VA_ARGS__)} #define z_rep_5(_fn, f, x, ...) {_fn(x, f); z_rep_4(_fn, f, ##__VA_ARGS__)} #define z_rep_6(_fn, f, x, ...) {_fn(x, f); z_rep_5(_fn, f, ##__VA_ARGS__)} #define z_rep_7(_fn, f, x, ...) {_fn(x, f); z_rep_6(_fn, f, ##__VA_ARGS__)} #define z_rep_8(_fn, f, x, ...) {_fn(x, f); z_rep_7(_fn, f, ##__VA_ARGS__)} #define z_rep_9(_fn, f, x, ...) {_fn(x, f); z_rep_8(_fn, f, ##__VA_ARGS__)} #define z_rep_10(_fn, f, x, ...) {_fn(x, f); z_rep_9(_fn, f, ##__VA_ARGS__)} #define z_rep_11(_fn, f, x, ...) {_fn(x, f); z_rep_10(_fn, f, ##__VA_ARGS__)} #define z_rep_12(_fn, f, x, ...) {_fn(x, f); z_rep_11(_fn, f, ##__VA_ARGS__)} #define z_rep_13(_fn, f, x, ...) {_fn(x, f); z_rep_12(_fn, f, ##__VA_ARGS__)} #define z_rep_14(_fn, f, x, ...) {_fn(x, f); z_rep_13(_fn, f, ##__VA_ARGS__)} #define z_rep_15(_fn, f, x, ...) {_fn(x, f); z_rep_14(_fn, f, ##__VA_ARGS__)} #define z_rep_16(_fn, f, x, ...) {_fn(x, f); z_rep_15(_fn, f, ##__VA_ARGS__)} #define z_rep_17(_fn, f, x, ...) {_fn(x, f); z_rep_16(_fn, f, ##__VA_ARGS__)} #define z_rep_18(_fn, f, x, ...) {_fn(x, f); z_rep_17(_fn, f, ##__VA_ARGS__)} #define z_rep_19(_fn, f, x, ...) {_fn(x, f); z_rep_18(_fn, f, ##__VA_ARGS__)} #define z_rep_20(_fn, f, x, ...) {_fn(x, f); z_rep_19(_fn, f, ##__VA_ARGS__)} #define Z_GET_ARG_2(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, \ _14, _15, _16, _17, _18, _19, _20, N, ...) N #define FOR_EACH_FIXED_ARG(fixed_arg, x, ...) \ {Z_GET_ARG_2(__VA_ARGS__, \ z_rep_20, z_rep_19, z_rep_18, z_rep_17, z_rep_16, \ z_rep_15, z_rep_14, z_rep_13, z_rep_12, z_rep_11, \ z_rep_10, z_rep_9, z_rep_8, z_rep_7, z_rep_6, \ z_rep_5, z_rep_4, z_rep_3, z_rep_2, z_rep_1, z_rep_0) \ (fixed_arg, x, ##__VA_ARGS__)} #endif /* ZEPHYR_INCLUDE_MISC_UTIL_H_ */