lfind.c

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#include <stdlib.h>
#include <search.h>

/*
 * @implemented
 */
void *_lfind(const void *key, const void *base, unsigned int *nelp,
         unsigned int width, int (__cdecl *compar)(const void *, const void *))
{
    char* char_base = (char*)base;
    unsigned int i;

    for (i = 0; i < *nelp; i++) {
        if (compar(key, char_base) == 0)
            return char_base;
        char_base += width;
    }
    return NULL;
}