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authormerge <null@invalid>2009-01-22 13:55:32 +0000
committerAndy Green <agreen@octopus.localdomain>2009-01-22 13:55:32 +0000
commitaa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch)
treefbb786d0ac6f8a774fd834e9ce951197e60fbffa /lib/sort.c
parentf2d78193eae5dccd3d588d2c8ea0866efc368332 (diff)
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage: From: merge <null@invalid> MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage: From: merge <null@invalid> MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage: From: Andy Green <andy@openmoko.com> fix-stray-endmenu.patch Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'lib/sort.c')
-rw-r--r--lib/sort.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/lib/sort.c b/lib/sort.c
index 6abbaf3d585..926d00429ed 100644
--- a/lib/sort.c
+++ b/lib/sort.c
@@ -32,11 +32,11 @@ static void generic_swap(void *a, void *b, int size)
* @base: pointer to data to sort
* @num: number of elements
* @size: size of each element
- * @cmp: pointer to comparison function
- * @swap: pointer to swap function or NULL
+ * @cmp_func: pointer to comparison function
+ * @swap_func: pointer to swap function or NULL
*
* This function does a heapsort on the given array. You may provide a
- * swap function optimized to your element type.
+ * swap_func function optimized to your element type.
*
* Sorting time is O(n log n) both on average and worst-case. While
* qsort is about 20% faster on average, it suffers from exploitable
@@ -45,37 +45,39 @@ static void generic_swap(void *a, void *b, int size)
*/
void sort(void *base, size_t num, size_t size,
- int (*cmp)(const void *, const void *),
- void (*swap)(void *, void *, int size))
+ int (*cmp_func)(const void *, const void *),
+ void (*swap_func)(void *, void *, int size))
{
/* pre-scale counters for performance */
int i = (num/2 - 1) * size, n = num * size, c, r;
- if (!swap)
- swap = (size == 4 ? u32_swap : generic_swap);
+ if (!swap_func)
+ swap_func = (size == 4 ? u32_swap : generic_swap);
/* heapify */
for ( ; i >= 0; i -= size) {
for (r = i; r * 2 + size < n; r = c) {
c = r * 2 + size;
- if (c < n - size && cmp(base + c, base + c + size) < 0)
+ if (c < n - size &&
+ cmp_func(base + c, base + c + size) < 0)
c += size;
- if (cmp(base + r, base + c) >= 0)
+ if (cmp_func(base + r, base + c) >= 0)
break;
- swap(base + r, base + c, size);
+ swap_func(base + r, base + c, size);
}
}
/* sort */
for (i = n - size; i > 0; i -= size) {
- swap(base, base + i, size);
+ swap_func(base, base + i, size);
for (r = 0; r * 2 + size < i; r = c) {
c = r * 2 + size;
- if (c < i - size && cmp(base + c, base + c + size) < 0)
+ if (c < i - size &&
+ cmp_func(base + c, base + c + size) < 0)
c += size;
- if (cmp(base + r, base + c) >= 0)
+ if (cmp_func(base + r, base + c) >= 0)
break;
- swap(base + r, base + c, size);
+ swap_func(base + r, base + c, size);
}
}
}