1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef _LINUX_HELPER_MACROS_H_
3 #define _LINUX_HELPER_MACROS_H_
4
5 #include <linux/math.h>
6
7 #define __find_closest(x, a, as, op)
8 ({
9 typeof(as) __fc_i, __fc_as = (as) - 1;
10 typeof(x) __fc_x = (x);
11 typeof(*a) const *__fc_a = (a);
12 for (__fc_i = 0; __fc_i < __fc_as; __f
13 if (__fc_x op DIV_ROUND_CLOSES
14
15 break;
16 }
17 (__fc_i);
18 })
19
20 /**
21 * find_closest - locate the closest element i
22 * @x: The reference value.
23 * @a: The array in which to look for the clos
24 * in ascending order.
25 * @as: Size of 'a'.
26 *
27 * Returns the index of the element closest to
28 */
29 #define find_closest(x, a, as) __find_closest(
30
31 /**
32 * find_closest_descending - locate the closes
33 * @x: The reference value.
34 * @a: The array in which to look for the clos
35 * in descending order.
36 * @as: Size of 'a'.
37 *
38 * Similar to find_closest() but 'a' is expect
39 * order.
40 */
41 #define find_closest_descending(x, a, as) __fi
42
43 /**
44 * is_insidevar - check if the @ptr points ins
45 * @ptr: the pointer to a memory addres
46 * @var: the variable which address and
47 *
48 * Evaluates to true if the address in @ptr li
49 * range allocated to @var.
50 */
51 #define is_insidevar(ptr, var)
52 ((uintptr_t)(ptr) >= (uintptr_t)(var)
53 (uintptr_t)(ptr) < (uintptr_t)(var)
54
55 #endif
56
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