1 /* 2 * Copyright 2018 Oticon A/S 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef _BS_UTIL_UTILS_H 8 #define _BS_UTIL_UTILS_H 9 10 #include "bs_types.h" 11 12 #ifndef STR 13 #define __STR_2(a) #a 14 #define STR(a) __STR_2(a) 15 #endif 16 17 //MIN and MAX macros similar to the definition in sys/param.h 18 //see for example http://stackoverflow.com/questions/3437404/min-and-max-in-c for a long discussion about a trivial piece of code 19 //Note that the solution with the compound statement is not necessarily portable to other compilers 20 #ifndef BS_MAX 21 #define BS_MAX( x, y ) ( ( (x) > (y) ) ? (x) : (y) ) //Safe'ish MAX macro (be careful that a and b are evaluated twice) 22 #endif 23 24 #ifndef BS_MIN 25 #define BS_MIN( x, y ) ( ( (x) < (y) ) ? (x) : (y) ) //Safe'ish MIN macro (be careful that a and b are evaluated twice) 26 #endif 27 28 #ifndef BS_MOD 29 #define BS_MOD( x ,y ) ( ( ( (x) % (y) ) + (y) ) % (y) ) //Use this instead of just % to avoid problems with rem( % in C99 ) != mod 30 #endif 31 32 #if !defined(BS_STATIC_ASSERT) 33 34 #if defined(__cplusplus) && (__cplusplus >= 201103L) 35 #define BS_STATIC_ASSERT(...) static_assert(__VA_ARGS__) 36 /* 37 * GCC 4.6 and higher have the C11 _Static_assert built 38 */ 39 #elif !defined(__cplusplus) && \ 40 ((__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) || \ 41 (__STDC_VERSION__) >= 201100) 42 #define BS_STATIC_ASSERT(...) _Static_assert(__VA_ARGS__) 43 #else 44 #define BS_STATIC_ASSERT(...) 45 #endif 46 47 #endif /* !defined(BS_STATIC_ASSERT) */ 48 49 #ifndef BS_UNREACHABLE 50 #define BS_UNREACHABLE __builtin_unreachable() 51 #endif 52 53 #endif 54
