67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/**
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* @file lv_utils.h
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*
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*/
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#ifndef LV_UTILS_H
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#define LV_UTILS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include <stdint.h>
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#include <stddef.h>
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Convert a number to string
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* @param num a number
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* @param buf pointer to a `char` buffer. The result will be stored here (max 10 elements)
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* @return same as `buf` (just for convenience)
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*/
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char *_lv_utils_num_to_str(int32_t num, char *buf);
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/** Searches base[0] to base[n - 1] for an item that matches *key.
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*
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* @note The function cmp must return negative if its first
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* argument (the search key) is less that its second (a table entry),
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* zero if equal, and positive if greater.
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*
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* @note Items in the array must be in ascending order.
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*
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* @param key Pointer to item being searched for
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* @param base Pointer to first element to search
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* @param n Number of elements
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* @param size Size of each element
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* @param cmp Pointer to comparison function (see #lv_font_codeCompare as a comparison function
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* example)
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*
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* @return a pointer to a matching item, or NULL if none exists.
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*/
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void *_lv_utils_bsearch(const void *key, const void *base, uint32_t n, uint32_t size,
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int32_t (*cmp)(const void *pRef, const void *pElement));
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/**********************
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* MACROS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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