//
// static assert and general purpose useful macros, borrowed in part from the DAPLink project
//
/**
* @ file macro . h
* @ brief useful things + Special asserts and macros
*
* DAPLink Interface Firmware
* Copyright ( c ) 2009 - 2016 , ARM Limited , All Rights Reserved
* SPDX - License - Identifier : Apache - 2.0
*
* Licensed under the Apache License , Version 2.0 ( the " License " ) ; you may
* not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS , WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
# ifndef VFS_MACRO_H
# define VFS_MACRO_H
# ifdef __cplusplus
extern " C " {
# endif
// --------------- VFS macros and general purpose --------------------
# define ELEMENTS_IN_ARRAY(array) (sizeof(array) / sizeof(array[0]))
# define MB(size) ((size) * 1024 * 1024)
# define KB(size) ((size) * 1024)
# ifndef MIN
# define MIN(a,b) (((a) < (b)) ? (a) : (b))
# endif
# ifndef MAX
# define MAX(a,b) (((a) > (b)) ? (a) : (b))
# endif
# define ROUND_UP(value, boundary) ((value) + ((boundary) - (value)) % (boundary))
# define ROUND_DOWN(value, boundary) ((value) - ((value) % (boundary)))
// ---------- HELPERS FOR XMACROS -----------------
# define XJOIN(a, b) a##b
# define STR_(x) #x
# define STR(x) STR_(x)
// ---------- COMPILER SPECIAL MACROS -------------
# define COMPILER_CONCAT_(a, b) a##b
# define COMPILER_CONCAT(a, b) COMPILER_CONCAT_(a, b)
// Divide by zero if the the expression is false. This
// causes an error at compile time.
//
// The special value '__COUNTER__' is used to create a unique value to
// append to 'compiler_assert_' to create a unique token. This prevents
// conflicts resulting from the same enum being declared multiple times.
# define COMPILER_ASSERT(e) enum { COMPILER_CONCAT(compiler_assert_, __COUNTER__) = 1 / ((e) ? 1 : 0) }
# define __at(_addr) __attribute__ ((at(_addr)))
# define VA_ARG_COUNT(...) INTERNAL_GET_ARG_COUNT_PRIVATE(0, ## __VA_ARGS__, 70, 69, 68, 67, 66, 65, 64, 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)
# define INTERNAL_GET_ARG_COUNT_PRIVATE(_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, _63, _64, _65, _66, _67, _68, _69, _70, count, ...) count
# ifdef __cplusplus
}
# endif
# endif
