// Copyright 2022 Stefan Kerkmann (KarlK90) // Copyright 2011 Jun Wako <wakojun@gmail.com> // SPDX-License-Identifier: GPL-2.0-or-later #pragma once #include "bitwise.h" // convert to string #define STR(s) XSTR(s) #define XSTR(s) #s #if !defined(MIN) # define MIN(x, y) (((x) < (y)) ? (x) : (y)) #endif #if !defined(MAX) # define MAX(x, y) (((x) > (y)) ? (x) : (y)) #endif #if !defined(CEILING) /** * @brief Computes the rounded up result of a division of two integers at * compile time. */ # define CEILING(dividend, divisor) (((dividend) + (divisor)-1) / (divisor)) #endif #if !defined(IS_ARRAY) /** * @brief Returns true if the value is an array, false if it's a pointer. * * This macro is ill-formed for scalars, which is OK for its intended use in * ARRAY_SIZE. */ # define IS_ARRAY(value) (!__builtin_types_compatible_p(typeof((value)), typeof(&(value)[0]))) #endif #if !defined(ARRAY_SIZE) /** * @brief Computes the number of elements of the given array at compile time. * * This Macro can only be used for statically allocated arrays that have not * been decayed into a pointer. This is detected at compile time, though the * error message for scalar values is poor. */ # define ARRAY_SIZE(array) (__builtin_choose_expr(IS_ARRAY((array)), sizeof((array)) / sizeof((array)[0]), (void)0)) #endif