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--- Libc/Libc-825.26/stdlib/FreeBSD/qsort.c
+++ Libc/Libc-320/stdlib/FreeBSD/qsort.c
@@ -10,6 +10,10 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
@@ -31,22 +35,17 @@
static char sccsid[] = "@(#)qsort.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdlib/qsort.c,v 1.15 2008/01/14 09:21:34 das Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/qsort.c,v 1.12 2002/09/10 02:04:49 wollman Exp $");
#include <stdlib.h>
-#include <string.h>
#ifdef I_AM_QSORT_R
typedef int cmp_t(void *, const void *, const void *);
#else
typedef int cmp_t(const void *, const void *);
#endif
-#ifdef I_AM_QSORT_B
-static inline char *med3(char *, char *, char *, cmp_t ^, void *) __attribute__((always_inline));
-#else
-static inline char *med3(char *, char *, char *, cmp_t *, void *) __attribute__((always_inline));
-#endif
-static inline void swapfunc(char *, char *, int, int) __attribute__((always_inline));
+static inline char *med3(char *, char *, char *, cmp_t *, void *);
+static inline void swapfunc(char *, char *, int, int);
#define min(a, b) (a) < (b) ? a : b
@@ -95,13 +94,7 @@
#endif
static inline char *
-med3(char *a, char *b, char *c,
-#ifdef I_AM_QSORT_B
-cmp_t ^cmp,
-#else
-cmp_t *cmp,
-#endif
-void *thunk
+med3(char *a, char *b, char *c, cmp_t *cmp, void *thunk
#ifndef I_AM_QSORT_R
__unused
#endif
@@ -112,47 +105,19 @@
:(CMP(thunk, b, c) > 0 ? b : (CMP(thunk, a, c) < 0 ? a : c ));
}
-#ifdef __LP64__
-#define DEPTH(x) (2 * (flsl((long)(x)) - 1))
-#else /* !__LP64__ */
-#define DEPTH(x) (2 * (fls((int)(x)) - 1))
-#endif /* __LP64__ */
-
#ifdef I_AM_QSORT_R
-int __heapsort_r(void *, size_t, size_t, void *, int (*)(void *, const void *, const void *));
+void
+qsort_r(void *a, size_t n, size_t es, void *thunk, cmp_t *cmp)
+#else
+#define thunk NULL
+void
+qsort(void *a, size_t n, size_t es, cmp_t *cmp)
#endif
-
-static void
-_qsort(void *a, size_t n, size_t es,
-#ifdef I_AM_QSORT_R
-void *thunk,
-#else
-#define thunk NULL
-#endif
-#ifdef I_AM_QSORT_B
-cmp_t ^cmp,
-#else
-cmp_t *cmp,
-#endif
-int depth_limit)
{
char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
- size_t d, r;
- int cmp_result;
- int swaptype, swap_cnt;
+ int d, r, swaptype, swap_cnt;
-loop:
- if (depth_limit-- <= 0) {
-#ifdef I_AM_QSORT_B
- heapsort_b(a, n, es, cmp);
-#elif defined(I_AM_QSORT_R)
- __heapsort_r(a, n, es, thunk, cmp);
-#else
- heapsort(a, n, es, cmp);
-#endif
- return;
- }
- SWAPINIT(a, es);
+loop: SWAPINIT(a, es);
swap_cnt = 0;
if (n < 7) {
for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
@@ -179,16 +144,16 @@
pc = pd = (char *)a + (n - 1) * es;
for (;;) {
- while (pb <= pc && (cmp_result = CMP(thunk, pb, a)) <= 0) {
- if (cmp_result == 0) {
+ while (pb <= pc && (r = CMP(thunk, pb, a)) <= 0) {
+ if (r == 0) {
swap_cnt = 1;
swap(pa, pb);
pa += es;
}
pb += es;
}
- while (pb <= pc && (cmp_result = CMP(thunk, pc, a)) >= 0) {
- if (cmp_result == 0) {
+ while (pb <= pc && (r = CMP(thunk, pc, a)) >= 0) {
+ if (r == 0) {
swap_cnt = 1;
swap(pc, pd);
pd -= es;
@@ -202,31 +167,25 @@
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(thunk, 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(pd - pc, pn - pd - es);
vecswap(pb, pn - r, r);
-
- if (swap_cnt == 0) { /* Switch to insertion sort */
- r = 1 + n / 4; /* n >= 7, so r >= 2 */
- for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
- for (pl = pm;
- pl > (char *)a && CMP(thunk, pl - es, pl) > 0;
- pl -= es) {
- swap(pl, pl - es);
- if (++swap_cnt > r) goto nevermind;
- }
- return;
- }
-
-nevermind:
if ((r = pb - pa) > es)
#ifdef I_AM_QSORT_R
- _qsort(a, r / es, es, thunk, cmp, depth_limit);
+ qsort_r(a, r / es, es, thunk, cmp);
#else
- _qsort(a, r / es, es, cmp, depth_limit);
+ qsort(a, r / es, es, cmp);
#endif
if ((r = pd - pc) > es) {
/* Iterate rather than recurse to save stack space */
@@ -236,19 +195,3 @@
}
/* qsort(pn - r, r / es, es, cmp);*/
}
-
-void
-#ifdef I_AM_QSORT_R
-qsort_r(void *a, size_t n, size_t es, void *thunk, cmp_t *cmp)
-#elif defined(I_AM_QSORT_B)
-qsort_b(void *a, size_t n, size_t es, cmp_t ^cmp)
-#else
-qsort(void *a, size_t n, size_t es, cmp_t *cmp)
-#endif
-{
- _qsort(a, n, es,
-#ifdef I_AM_QSORT_R
- thunk,
-#endif
- cmp, DEPTH(n));
-}