Zilog Z8F0130 - Manual (Page 480)

Appendix B. C Standard Library UM013037-1212
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Zilog Developer Studio II – Z8 Encore!
User Manual
The UART must be initialized using the Zilog init_uart() function. See the init_uart
section on page 232.
qsort
Sorts an array of nmemb objects, the initial member of which is pointed to by any base.
The size of each object is specified by size.
The array is sorted in ascending order according to a comparison function pointed to by
compar , which is called with two arguments that point to the objects being compared. The
compar function returns an integer less than, equal to, or greater than zero if the first argu-
ment is considered to be respectively less than, equal to, or greater than the second.
If two members in the array compare as equal, their order in the sorted array is unspeci-
fied.
Synopsis
#include

void qsort(void *base, size_t nmemb, size_t size,

int (*compar)(void *, void *));
Example
int lst[]={5,8,2,9};

int compare (void * x, void * y);

qsort (lst, sizeof(int), 4, compare);


int compare (void * x, void * y)

{

int a = *(int *) x;

int b = *(int *) y;

if (a < b) return -1;

if (a == b)return 0;

return 1;

}
The compare function prototype is, as shown in the preceding example:
int compare (void * x, void * y);
rand
Computes a sequence of pseudorandom integers in the range 0 to RAND_MAX.
Note: