#include <mm/heap.h>
#include <memstr.h>
#include <sort.h>
void qsort(void * data
, count_t n
, size_t e_size
, int (* cmp
) (void * a
, void * b
)) {
if (n > 4) {
int i = 0, j = n - 1;
void * tmp
= (void *) malloc(e_size
);
void * pivot
= (void *) malloc(e_size
);
while (1) {
while ((cmp(data + i * e_size, pivot) < 0) && i < n) i++;
while ((cmp(data + j * e_size, pivot) >=0) && j > 0) j--;
if (i<j) {
memcpy(tmp
, data
+ i
* e_size
, e_size
);
memcpy(data
+ i
* e_size
, data
+ j
* e_size
, e_size
);
memcpy(data
+ j
* e_size
, tmp
, e_size
);
} else {
break;
}
}
qsort(data
, j
+ 1, e_size
, cmp
);
qsort(data
+ (j
+ 1) * e_size
, n
- j
- 1, e_size
, cmp
);
} else {
bubblesort(data, n, e_size, cmp);
}
}
void bubblesort(void * data, count_t n, size_t e_size, int (* cmp) (void * a, void * b)) {
bool done = false;
void * p;
void * slot
= (void *) malloc(e_size
);
while (!done) {
done = true;
for (p = data; p < data + e_size * (n - 1); p = p + e_size) {
if (cmp(p, p + e_size) == 1) {
memcpy(p
, p
+ e_size
, e_size
);
memcpy(p
+ e_size
, slot
, e_size
);
done = false;
}
}
}
}
/*
* Comparator returns 1 if a > b, 0 if a == b, -1 if a < b
*/
int int_cmp(void * a, void * b) {
return (* (int *) a > * (int*)b) ? 1 : (*(int *)a < * (int *)b) ? -1 : 0;
}
int __u8_cmp(void * a, void * b) {
return (* (__u8 *) a > * (__u8 *)b) ? 1 : (*(__u8 *)a < * (__u8 *)b) ? -1 : 0;
}
int __u16_cmp(void * a, void * b) {
return (* (__u16 *) a > * (__u16 *)b) ? 1 : (*(__u16 *)a < * (__u16 *)b) ? -1 : 0;
}
int __u32_cmp(void * a, void * b) {
return (* (__u32 *) a > * (__u32 *)b) ? 1 : (*(__u32 *)a < * (__u32 *)b) ? -1 : 0;
}