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spa: add SPA_FOR_EACH_ELEMENT for array traversal

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Peter Hutterer 2021-06-03 15:23:29 +10:00 • committed by Wim Taymans
parent 5a69a04cfe
commit 4d45182801
2 changed files with 37 additions and 0 deletions
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12
spa/include/spa/utils/defs.h
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@ -106,6 +106,18 @@ struct spa_fraction {
};
#define SPA_N_ELEMENTS(arr) (sizeof(arr) / sizeof((arr)[0]))
/**
* Array iterator macro. Usage:
* ```c
* struct foo *array[16];
* struct foo *f;
* SPA_FOR_EACH_ELEMENT(array, f) {
* f->bar = baz;
* }
* ```
*/
#define SPA_FOR_EACH_ELEMENT(arr, ptr) \
for (ptr = arr; (void*)ptr < SPA_PTROFF(arr, sizeof(arr), void); ptr++)
#define SPA_MIN(a,b) \
({ \