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comparison libmlk-core/mlk/core/util.h @ 629:fee7bd30725c

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rpg: cleanup tileset-loader-file
author David Demelier <markand@malikania.fr>
date Sat, 26 Aug 2023 16:09:35 +0200
parents 509b395171f2
children 3d238b43a9aa
comparison
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628:c2b62ff38224 629:fee7bd30725c
22 /** 22 /**
23 * \file mlk/core/util.h 23 * \file mlk/core/util.h
24 * \brief libmlk-core utilities 24 * \brief libmlk-core utilities
25 */ 25 */
26 26
27 #include <stddef.h>
27 #include <stdint.h> 28 #include <stdint.h>
28 29
29 /** 30 /**
30 * Compute the length of an fixed size array. 31 * Compute the length of an fixed size array.
31 * 32 *
32 * \param x the fixed size array 33 * \param x the fixed size array
33 * \return the length 34 * \return the length
34 */ 35 */
35 #define MLK_UTIL_SIZE(x) (sizeof ((x)) / sizeof ((x)[0])) 36 #define MLK_UTIL_SIZE(x) (sizeof ((x)) / sizeof ((x)[0]))
37
38 /**
39 * Obtain parent container from a member field.
40 */
41 #define MLK_CONTAINER_OF(ptr, type, member) \
42 ((type*)((char*)(1 ? (ptr) : &((type*)0)->member) - offsetof(type, member)))
36 43
37 #if defined(__cplusplus) 44 #if defined(__cplusplus)
38 extern "C" { 45 extern "C" {
39 #endif 46 #endif
40 47