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util/set: overhaul

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This commit is contained in:
Kirill Primak 2022-08-19 21:20:43 +03:00 • committed by Simon Zeni
parent 20c208d46a
commit 7333a4602a
3 changed files with 41 additions and 83 deletions
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26
include/util/set.h
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@ -2,24 +2,28 @@
#define UTIL_SET_H
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
size_t push_zeroes_to_end(uint32_t arr[], size_t n);
#include <sys/types.h>
/**
* Add `target` to `values` if it doesn't exist
* "set"s should only be modified with set_* functions
* Values MUST be greater than 0
* Add target to values.
*
* Target is added to the end of the set.
*
* Returns the index of target, or -1 if the set is full or target already
* exists.
*/
bool set_add(uint32_t values[], size_t *len, size_t cap, uint32_t target);
ssize_t set_add(uint32_t values[], size_t *len, size_t cap, uint32_t target);
/**
* Remove `target` from `values` if it exists
* "set"s should only be modified with set_* functions
* Values MUST be greater than 0
* Remove target from values.
*
* When target is removed, the last element of the set is moved to where
* target was.
*
* Returns the previous index of target, or -1 if target wasn't in values.
*/
bool set_remove(uint32_t values[], size_t *len, size_t cap, uint32_t target);
ssize_t set_remove(uint32_t values[], size_t *len, size_t cap, uint32_t target);
#endif