void qsortt(char *lines[], int left, int right) {
if ( left >= right )
return;
printf("left=%d, right=%d\n", left, right);
int i, last;
last = left;
for (i = left + 1; i <= right; i++) {
if ( (strcmp(lines[i], lines[left])) < 0 ) {
swapt(lines, i, ++last);
}
}
swapt(lines, last, left);
qsortt(lines, left, last-1);
qsortt(lines, last+1, right);
}
int main() {
char *lines[MAXLINES];
int nl;
if ( (nl = readlines(lines, MAXLINES)) > 0 ) {
printf("Hello\n");
qsortt(lines, 0, nl - 1);
printf("Sort is fine\n");
writelines(lines, nl);
}
return 0;
}
void qsortt(void *a, size_t n, size_t es, int (*cmp)(const void *, const void *))
{
char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
int d, swaptype, swap_cnt;
int r;
printf("this is a test\n");
loop: SWAPINIT(a, es);
swap_cnt = 0;
if (n < 7) {
for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
pl -= es)
swap(pl, pl - es);
return;
}
pm = (char *)a + (n / 2) * es;
if (n > 7) {
pl = a;
pn = (char *)a + (n - 1) * es;
if (n > 40) {
d = (n / 8) * es;
pl = med3(pl, pl + d, pl + 2 * d, cmp);
pm = med3(pm - d, pm, pm + d, cmp);
pn = med3(pn - 2 * d, pn - d, pn, cmp);
}
pm = med3(pl, pm, pn, cmp);
}
swap(a, pm);
pa = pb = (char *)a + es;
pc = pd = (char *)a + (n - 1) * es;
for (;;) {
while (pb <= pc && (r = cmp(pb, a)) <= 0) {
if (r == 0) {
swap_cnt = 1;
swap(pa, pb);
pa += es;
}
pb += es;
}
while (pb <= pc && (r = cmp(pc, a)) >= 0) {
if (r == 0) {
swap_cnt = 1;
swap(pc, pd);
pd -= es;
}
pc -= es;
}
if (pb > pc)
break;
swap(pb, pc);
swap_cnt = 1;
pb += es;
pc -= es;
}
if (swap_cnt == 0) { /* Switch to insertion sort */
for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
pl -= es)
swap(pl, pl - es);
return;
}
pn = (char *)a + n * es;
r = min(pa - (char *)a, pb - pa);
vecswap(a, pb - r, r);
r = min((size_t)(pd - pc), pn - pd - es);
vecswap(pb, pn - r, r);
if ((size_t)(r = pb - pa) > es)
qsortt(a, r / es, es, cmp);
if ((size_t)(r = pd - pc) > es) {
/* Iterate rather than recurse to save stack space */
a = pn - r;
n = r / es;
goto loop;
}
/* qsortt(pn - r, r / es, es, cmp);*/
}